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Laptops with the Longest Battery Life?

Yi Ding asks: "Recently, I have been investigating laptops for clients, and the majority of the complaints about current laptops is battery life. Most laptops just don't have enough juice to even finish a single DVD or write an article for 4-5 hours in an internet cafe. Of course, one can lug around extra battery packs, but it's a pain and often defeats the purpose of having a laptop in the first place, portability. What have your experiences with battery life been and where can I find the longest lasting, reasonably robust, laptop?"

123 of 751 comments (clear)

  1. The ones with the longest life by Anonymous Coward · · Score: 5, Funny

    Are the ones that stay plugged into the wall.

    1. Re:The ones with the longest life by pilgrim23 · · Score: 2, Funny

      well my Osborne 1 works great but you need to plug it in. CP/M though is a bit limiting. Lousy for wireless and the tables at Starbucks are a bit flimsy when I drop it on top...

      --
      - Minutus cantorum, minutus balorum, minutus carborata descendum pantorum.
  2. Toshiba Satellite by mokomull · · Score: 5, Interesting

    My Toshiba Satellite A45-S121 gets 4-5 hours of battery life on dim backlight.

    1. Re:Toshiba Satellite by Wandering+Wombat · · Score: 2, Interesting

      Curse you... I was about to say that. It isn't mine, but my friends Toshiba lasted for all-night goof-off sessions at Dennys after he got some free-ware power-management software. I thought it was bull but it added about 2 hours to his batteries. I'll ask him specifically what it was and try and post back here.

      --
      I like to place meaningful quotes in my sig, so people will know that I know what meaningful quotes are.
    2. Re:Toshiba Satellite by nocomment · · Score: 5, Funny

      How about the new laptop from 3M? They've invented a method by which you use a stylus with an embedded graphite core which actually transposes the text onto a flat and flimsy surface manufactured with some sort of parchment-like material.

      Comes with a lot of games too!

      --
      /* oops I accidentally made a comment, sorry */
      /* http://allyourbasearebelongto.us */
    3. Re:Toshiba Satellite by NanoGator · · Score: 2, Interesting

      "My Toshiba Satellite A45-S121 gets 4-5 hours of battery life on dim backlight."

      I have a Toshiba M-200 and I enjoy similar luck. The difference is it is a Tablet PC. Damn I love this thing. No built in optical drive, though. Great for browsing from the couch and doodling. Basically what I bought it for. 1400 by 1050 screen to boot.

      --
      "Derp de derp."
    4. Re:Toshiba Satellite by bahamat · · Score: 3, Informative

      My Apple iBook G4 gets 4-5 hours on full backlight, and close to 8 on dim.

    5. Re:Toshiba Satellite by abe+ferlman · · Score: 3, Funny

      I gave it a try, but drawing frames for DVD playback was too slow, to say nothing of the CSS decryption algorithm you have to use with that thing.

      --
      microsoftword.mp3 - it doesn't care that they're not words...
    6. Re:Toshiba Satellite by Anonymous Coward · · Score: 2, Funny

      My Lockheed Martin satellite gets 12 years of battery life on solar power.

      The slight disadvantage is that it has to be launched into geo-stationary orbit by rocket first, can only be accessed via wireless communications. Cost me $4,000,000, but I can watch 4000 video channels and have 10,000 international telephone conversations simultaneously.

    7. Re:Toshiba Satellite by Jack+Auf · · Score: 2, Informative

      I call bullshit.

      You neglect to state which model you have so I can't be certain of the degree you are full of shit.

      I regularly use a 1ghz/14"/OSX 10.3.n config at work and get, maybe, 3.5 hours full brightness and around 4 hours dimmed down almost all the way.

      Are you using linux and command line only (i.e.; no gui at all)? did you get your hands on a prototype iBook fuel cell? Are you using a new battery type made by space aliens?

      --
      "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety" - BF
    8. Re:Toshiba Satellite by Anonymous Coward · · Score: 3, Informative

      I call bullshit on your bullshit.

      My 500mhz Powerbook G4 got 5 hours dim, minimal disk access, reduced processor speed when battery was new. Replaced battery recently, it got ~7, but only for a few weeks; it now gets 6ish. This is very much in power-conservation mode (screen actually off at times), but it's doable and the GUI is still there.

      ~J

    9. Re:Toshiba Satellite by Pieroxy · · Score: 2, Interesting

      You need to turn off seti@home. That'll help your battery time.

    10. Re:Toshiba Satellite by pandemonia · · Score: 3, Informative

      I wouldn't call this complete BS.

      My iBook G4 800 12" gets about 4-5h with full brightness, and around 5-6h dimmed.

      This, of course, with processor scaling set to low in the Energy settings.

      -- michell

      --
      -mz
    11. Re:Toshiba Satellite by Telecommando · · Score: 4, Funny

      On the other hand, the encryption is great!

      I've yet to find anyone who can decode what I have written.

      Sometimes not even me.

      --
      Beta sux! Join the Slashcott! http://hardware.slashdot.org/comments.pl?sid=4760465&cid=46173047
    12. Re:Toshiba Satellite by EvilTwinSkippy · · Score: 3, Informative
      I have a 12" iBook G4. I will confirm that I regularly get between 4-5 hours with the screen brightness properly set and the wireless turned off.

      I use the thing every day on my commute to work.

      This is on a factory model, no aftermarket batteries, no special hacks.

      --
      "Learning is not compulsory... neither is survival."
      --Dr.W.Edwards Deming
    13. Re:Toshiba Satellite by metaomni · · Score: 2, Informative

      I'll second the bullshit to your bullshit. I have a 1ghz/12"/OS X 10.3. If i knock the brightness down all the way I'll get 6.5-7hrs out of it, 3-4 hours at full brightness or heavy load. Maybe you need a new battery. Or turn off "Best Performance" under power management. Automatic works well, "Longest Battery Life" is a dream for word processing / casual web browsing. No noticable slowdown but the underclocked processor will coast for 1-1.5hrs more.

    14. Re:Toshiba Satellite by corian · · Score: 2, Funny

      It isn't mine, but my friends Toshiba lasted for all-night goof-off sessions at Dennys after he got some free-ware power-management software ... I'll ask him specifically what it was and try and post back here.

      I know that one. It's called CAFFEINE. Works for people too!

  3. The most beautiful 12" Powerbook is the BEST by cytoman · · Score: 2, Informative

    Beautiful OS, beautiful construction, loooooong battery life, light-weight... what else can one ask for?

    1. Re:The most beautiful 12" Powerbook is the BEST by Anonymous Coward · · Score: 2, Informative

      I have the older 12" 1Ghz. I topped out at about 5 hours or so on dim light and no wireless. Did it a few times at conferences and on flights to the far east.

    2. Re:The most beautiful 12" Powerbook is the BEST by Gehenna_Gehenna · · Score: 4, Informative

      My 12" iBook rocks as well. Less power, less sexy, but I EASILY get 5 hours of batt. life and it was considerably cheaper than the powerbook. Runs cooler as well.

      --

    3. Re:The most beautiful 12" Powerbook is the BEST by Jeffrey+Baker · · Score: 5, Informative
      The best part of the 12" is it has a DVD burner (or CD burner, depending) permanently installed, and it has the wireless and bluetooth built-in. On so many other compact laptops you either have a dongle-attached CD-ROM puck, or a CD-ROM in a device bay that you can swap out for a battery, but without the extra battery you get shitty battery life. The Powerbooks gets good life with the optical drive installed, and you don't need a lot of optional junk for wireless comms.

      I once watched "The Thin Red Line" DVD on a cross-country airplane trip, so I know the PowerBook gets at least three hours from the battery even with the optical drive, the backlight, and the sound running. Of course I had the wireless devices disabled and the CPU speed set to the minimum.

    4. Re:The most beautiful 12" Powerbook is the BEST by Anonymous Coward · · Score: 2, Funny

      12" ... beautiful ... loooooooong
      No comment.

      I find that I get the best battery life when I have a cord secretly running into some nearby outlet. When an employee goes, "Hey! You can't leech our power!" then I just get the hell out, really damn quick.
      -os

    5. Re:The most beautiful 12" Powerbook is the BEST by plj · · Score: 2, Interesting

      I should go asleep, but I really have to reply to this...

      My largest complaint about my non-DVI 12" PBook (1st generation, 867 MHz) is it's miserable battery life! When it was new, I got some 3,5 hours when the display was rather dimmed, wireless ifaces turned off and CPU usage remained low.

      Now, when it is year and two monts old, I no longer can get anything over two hours. Also recently the battery meter has gone really weird, jumping from low charges to full during charging, and falling suddenly from high charges to zero when on battery (forcing the machine to sleep of course). I've tried running the battery full and empty tens of times, and also tried if PMU reset would help (it didn't).

      I never had any problems like this with my former work laptop -- Compaq Evo N600c + W2k -- even though I never even attempted to do anything like battery calibration, and I hold it in a charger whenever one was nearby.

      I also know that there are PC laptops, which have some +8h battery lifes, if you just replace the normally useless optical drive with extra battery, but of course Apple forces me to carry around that stupid DVD drive I needed last time perhaps sometime last week (and which I could extremely well just plug to FireWire port whenever I need it).

      But well, somehow I have to bear this, as I'll give up my OS X installation when you pry it from my cold, dead fingers...

      Nevertheless, laptops should have batteries like even the worst of cell phones: use at least one whole day carelessly, and then charge during the night.

      --
      “Wait for Hurd if you want something real” –Linus
    6. Re:The most beautiful 12" Powerbook is the BEST by Jeffrey+Baker · · Score: 4, Funny

      Many times I've been with some people in the hallway of a convention, and someone needs a CD duplicated, or wants to swipe some MP3s, or whatever. Normally it's the people with Apple laptops who get to do this chore, because 1) ripping and burning CDs and DVDs actually works under MacOS, and 2) everybody else left their optical drive at home. I even duplicated some guy's WinXP install CD the other day, because he had the ISO but needed to boot the CD. I wrote "Made with a Mac" on the face of the CD ;)

    7. Re:The most beautiful 12" Powerbook is the BEST by drsmithy · · Score: 2, Insightful
      Beautiful OS, beautiful construction, loooooong battery life, light-weight... what else can one ask for?

      A backlit keyboard, better video card and higher screen resolution ?

      The 12" PB has the potential to be a great machine, it's just a pity it's such a poor cousin to the other PBs. 9/10 times buyers would be just as well served with a 12" iBook.

    8. Re:The most beautiful 12" Powerbook is the BEST by Rude+Turnip · · Score: 2, Informative

      I pretty much use the one button on my iBook exclusively because the apps are designed to not require right-clicks. On my Dell Inspiron, I go full out external three button trackball because the apps need it.

    9. Re:The most beautiful 12" Powerbook is the BEST by Jeffrey+Baker · · Score: 4, Informative
      Having recently bought (another) 12" PowerBook, and having shopped around quite a bit, I'm compelled to disagree. Every buyer has different requirements, but I just could NOT find any other laptop with the features I wanted. Namely, a 12" unit with a DVD burner, 802.11g, powered firewire ports, ethernet, modem, and DVI. You'd think that's pretty basic, but for whatever reason only Apple makes that laptop. IBM, for some horrible reason, doesn't think you need a a good graphics adapter: their 12" X40 uses Intel Extreme Graphics 2. Dell's 12" Latitude also uses this horrible Intel graphics hack. Wretch! The PowerBook has proper GeForce FX 5200 graphics, and a DVI port. Did I mention the DVI port yet?

      IBM also won't give you a DVD burner, and you don't get an optical drive of any kind unless you are lugging around the Ultra(Heavy)Base docking station. Dell's 12" has only external optical drives, unpowered FireWire ports, and again no DVI port.

      Also good luck getting Linux to run right with the Intel Pro(tected source code) Wireless LAN and the Intel Extreme(ly proprietary) Graphics adapter.

      So I have to say, after shopping the competition, the Apple laptops are unique.

    10. Re:The most beautiful 12" Powerbook is the BEST by huchida · · Score: 3, Interesting

      There's a few things I miss about my late, great Wallstreet Powerbook-- among them the superior keyboard-- but most of all, I miss the fact that you could swap out a drive for a second battery. With two fully charged batteries in there I could easier go for eight hours or more. It wouldn't make sense for the 12" models, but how about a second battery in the 15" or 17" Powerbooks? Yeah, you'd add a little weight, which for some reason is a huge taboo right now-- but the extra life would be well worth it.

    11. Re:The most beautiful 12" Powerbook is the BEST by Anonymous Coward · · Score: 3, Informative

      > IBM also won't give you a DVD burner, and you don't get an optical drive of any kind unless you are lugging around the Ultra(Heavy)Base docking station.

      False, they also have a small USB 2.0 combo drive, which draws power from the USB port. The X40 and the combo drive together are still smaller and weight less than the 12" PB.

      As you said yourself, everyone has different requirements. If you need a 12" laptop with powered Firewire, built-in optical drive, good 3D accelleration, dvi port, and trackpad, the Apple is your only choice. If you need one with gigabit ethernet, irda, cardbus, sd card reader, 7 hour battery life, vga port without dongles, keyboard light, trackpoint, Apple has nothing to offer. The PB suits your needs, the Thinkpad suits mine. Let's leave it at that, OK?

    12. Re:The most beautiful 12" Powerbook is the BEST by mtnharo · · Score: 2, Informative

      Regarding the falling battery life and wonky power meter:
      You probably need to replace the battery with a new one. Li-Ion batteries have a specific number of charge cycles that they will last for, after which point they do not hold as much of a charge. Also, the output voltage will not remain as consistent as it once was, causing the battery meter to give inaccurate results.

    13. Re:The most beautiful 12" Powerbook is the BEST by nuggetman · · Score: 2, Informative

      The 15 and 17 powerbooks have a backup battery that lasts about 5 minutes or so. It enables you to swap batteries out without shutting down.

      --
      ...and that's all there is to it.
  4. I've often found... by craenor · · Score: 5, Funny

    That if you leave it in suspend the whole time, or bettery yet HIBERNATE...you can get it to last for days.

    1. Re:I've often found... by craenor · · Score: 3, Informative

      Fine...I'll bring this back on topic. With effective use of Suspend, dimming the LCD, having enough RAM (to keep hdd access down) and the like, you can get a much better battery life out of a system with already respectable battery life.

      Now...admittedly, there are systems that will play a full DVD on a single charge, but if this is a priority for you, then you should own two batteries anyway.

      In other words though...while the system certainly matters, how you use it can matter more. (Of course, nothing will save you if you get one of those portable systems that are all Desktop hardware shoe-horned into a portable chassis).

    2. Re:I've often found... by Zordak · · Score: 2, Informative
      Now...admittedly, there are systems that will play a full DVD on a single charge, but if this is a priority for you, then you should own two batteries anyway.
      Or you could just get a portable DVD player.
      --

      Today's Sesame Street was brought to you by the number e.
  5. Trade off by erick99 · · Score: 5, Insightful
    Until a more advanced battery technology comes along , battery life is going to be a trade between how long you want the computer to run between recharging and how many features (DVD, etc) you want available. Eventually, some new technology such as fuel cell will enable us to have our cake (lotsa features) and eat it too (very long battery life).

    Cheers!

    Erick

    --
    http://www.busyweather.com/
    1. Re:Trade off by PhoenixFlare · · Score: 2, Interesting

      You have absolutely no idea how a fuel cell works, do you?

      Try reading here or here for starters.

      Fuel cells are not gas cans, and you will certainly not be pouring gasoline into your laptop battery. Please, read before you post.

    2. Re:Trade off by JWSmythe · · Score: 2, Insightful

      Well, from what I understand, they aren't simply pressurized hydrogen cans. They use methanol, but still, it's a potentially hazardous fuel.

      But, security on aircraft are a joke anyways. You could carry bottles of almost anything on a plane. A friend of mine filled a Dr. Pepper bottle full of Captain Morgan's spiced rum, and carried it on with her. She was a bit of a drunk. (Ok, a regular alcoholic). They didn't even notice the color was wrong. Hell, Cap't Morgans looks more like gasoline than Dr. Pepper. They didn't question the fact that she was carrying it on. What if it was 151 in a sprite or water bottle? Or "white gasoline"?

      But really, how many perfectly common items are dangerous?

      Butane from a common disposable lighter can be used to fill a bag or balloon, and combust rapidly.

      Me smacking someone in the head with a hardback copy of War and Peace would be deadlier than a pair of fingernail clippers.

      Or as an old ex-military man I once knew said, he could kill a man with a rolled up newspaper. It's not the item, it's how it's used.

      I'd be willing to bet most women's purses are the most dangerous things on an airplane. If you won't believe me, tell your wife/girlfriend that she's ugly so you're sleeping with the new 19 year old secretary at work, and then dare her to hit you with her purse. :)

      I think it's stupid that I have to put my screwdriver in checked luggage. Hell, I might fix the tray table so it doesn't flop down by itself while we're flying. Forbid the thought.

      I recently attached my little 802.11b antenna to the top of my laptop. I leave the wire coiled up. *EVERY* time I go through security now, they look at it like it's a bomb. I had one security guard who couldn't even recognize it's a laptop. He was like "What is that?" Ummm, a laptop dude. How the hell are they suppose to recognize a home made explosive device, if they can't even identify common electronics?? I could have told him it was a toaster, and he would have believed me.

      --
      Serious? Seriousness is well above my pay grade.
  6. iBooks by tirefire · · Score: 4, Informative

    iBook G4's have a very long battery life. I have one, and it lasts a lot longer than any PC laptop I've encountered.

    1. Re:iBooks by piyamaradus · · Score: 4, Informative

      I have a PB 15" 1.25 with 2 separate batteries. I had a cross-country flight a couple of days ago, and, with 2 charged batteries:

      1) Logged on and did email while stuck on the plane for an hour at the gate, about 45 minutes online via bluetooth -> cell phone (at which point the cell phone battery's about to die).

      2) In the air, watched 5 simpsons episodes on DVD. Battery was now at 20%, so I closed and swapped them out (nice that PB 'soft suspend' can handle a battery swap).

      3) Watched 2 more episodes on second battery, then landed.

      So, first battery gave me about 45 min + (25 * 5) = just under 3 hours to consume 80% of battery, which was all either DVD playing or wireless (bluetooth).

      I've been through ~6 Toshiba laptops, from 486s on up to 9100s, all carrying two batteries, and I could never make it across country even using both of them.

    2. Re:iBooks by YetAnotherName · · Score: 4, Informative

      I have to concur ... I don't go mobile much, but my Apple iBook G4 12" just keeps going on and on and on. When I do travel, I don't even think about plugging in and recharging.

      Best of all, it's Unix under the hood. Glistening eye candy, and yet I can still fire up vi. Nice.

  7. Apple iBook G4 by crimson_alligator · · Score: 5, Informative

    My G4-800 iBook has lasted at least six hours, perhaps longer.

    I'm a Linux user but Mac laptops are lovely, with excellent battery life. Too bad Airport Express (and power management?) isn't supported on Linux PPC.

    1. Re:Apple iBook G4 by Otter · · Score: 3, Interesting
      Actually, Linux provides the best TiBook battery life anecdote I can offer -- I booted into Yellow Dog, updated all of the KDE source tree from CVS and started compiling, not realizing that the power cord wasn't plugged in properly. It got through Qt, arts, kdelibs, kdeadmin, kdebase, kdegraphics, kdemultimedia and a few others before running out of power. And, as the alligator said, that's without Apple's power management!

      I've routinely done cross-US flights playing MP3s the whole way.

    2. Re:Apple iBook G4 by YetAnotherName · · Score: 4, Insightful
      Yeah, but MacOS X is Unix anyway; I've been able to do a lot of my Linux application development on MacOS X with few problems.

      Besides,
      autoconf
      is a wonderful tool.
    3. Re:Apple iBook G4 by ari_j · · Score: 3, Funny

      I'd have the miniature iBook or PowerBook if it had a better pointer device. I am more accurate and faster with an e-Clit (nipple stick, trackpoint, whatever you call it; I prefer the most politically incorrect term whenever possible), and they are more reliable and less in-the-way than trackpads to boot. Additionally, they require the least finger movement of any pointing device.

      And if you say anything about "just use an external mouse", that doesn't work when you're actually using it as a laptop, and it's inconvenient as hell. If I wanted a portable desktop, I'd get one. But I don't, I want a laptop computer that is entirely self-contained.

    4. Re:Apple iBook G4 by Alan+Hicks · · Score: 2, Interesting
      My G4-800 iBook has lasted at least six hours, perhaps longer.

      While I won't go so far as to say that my iBook G4 lasts that long, it always lasts a minimum of 4 hours of continuous use on a single battery. I have the older 800 Mhz 12" model with 640 MB of RAM (fully loaded, keeps hard disk activity down). Things light as a feather, snappy, and rarely gives me any problems.

      Like the OP I'm a linux user (Slackware), but I love this little iBook. It does anything I need (I've got all my typical linux tools (like ethereal, snort, nmap, ncftp, screen, etc) compiled and running on it flawlessly. At this point, I might as well be running GNU/Darwin with a Quartz window manager. :^)

      --
      Slackware, what else when it must be secure, stable, and easy?
    5. Re:Apple iBook G4 by 2Stupid2KnowIt · · Score: 2, Informative

      I agree my iBook G3 gets great battery life, at least 4 hours and I can watch an entire DVD with some power left over. (this is with Airport enabled) Can't say the same about my powerbook though. Only get 2.5-3 hours on that.

  8. PowerBook by Sethb · · Score: 4, Informative

    I've got to say, my new 12" 1.33Ghz G4 PowerBook really has some great battery life. Well over 3.5 hours with "normal" usage, even with the screen brightness cranked up. I haven't done any DVD playback testing though. You can probably get improved battery life for DVD playback by ripping the DVD to your hard drive, so you're not spinning the optical drive that whole time...

    --
    When in danger or in doubt, run in circles, scream and shout. --Robert A. Heinlein
  9. Electrovaya by Awperator · · Score: 4, Informative

    Werent they the ones that touted the longest battery life? Of course, they specialize in Tablet PC's (which are pimp - get a motion m1400VA... so nice) Back to topic... yeah I think electrovaya had the longest claims (9 hours), and the longest life (7-8 hours that people have been getting) - Awperator

    1. Re:Electrovaya by mindriot · · Score: 4, Informative

      I'm most happy with my Fujitsu Lifebook P-2120 (runs Linux nicely). With the extended main battery and the drive bay battery, I get up to nine hours.

      Of course, the cpu is a bit outdated. And I only do work on it, if I were to watch DVDs or stuff I'd probably hook it up to A/C power anyway. But I like the small size, the light weight, and the fact that pretty much everything is in it.

      But I hated the fact that I had to order it from the US (I live in Germany) and it took me forever to find a retailer who would send it, just because Fujitsu refuses to send them to Europe, and Fujitsu-Siemens in Germany doesn't even offer them.

      If you want something ultra-portable with everything in it that you want to use mostly for working, it's quite lovely. Unfortunately, it looks like it's not being sold anymore.

      I know this doesn't quite answer your request, but it might still be a good idea to check Portable One (they used to be called Global Computers when I ordered from them).

      Don't know about the new Fujitsu P series anymore. And, I have to say, I still hold a grudge against laptop manufacturers and computer magazines, because practically all of them advertize performance, never battery life. Most laptop tests I see do performance benchmarks, and stuff like Quake III benchmarks and all that bullshit. WTF? No one really seems to want to make an effort in constructing a laptop with long battery life. Quite frustrating, that. I don't wanna play games for half an hour. I wanna use the thing for work, preferably nine or more hours before having to recharge.

  10. IBM X31 -- 4 n change hours by mrgreenfur · · Score: 5, Interesting

    I have an IBM X31 and the standard battery. With the low power settings on (you're just writing an article, right?), wifi on, and the dock at home, it lasts just under 5 hours.

    If you want to burn cd's, bring the base and put a batter in it and it'll last another 3 or so hours.

    If you want ultra long battery life, get the super extended batter that clips onto the bottom, just like a base. It'll give you almost 9 hours!

    This laptop is incredible. I highly suggest it for anyone who doesn't want to lug around a 6lb laptop.

    1. Re:IBM X31 -- 4 n change hours by eric2hill · · Score: 2, Insightful

      Win-R = Run Prompt (95% of my needs for that key)
      Win-D = Show the desktop (4% of my needs)
      Win-E = Explore (1% of my needs)
      Win-Break (hah!) = Device Manager (once or twice a year)

      --
      LOAD "SIG",8,1
      LOADING...
      READY.
      RUN
  11. Do your research by winkydink · · Score: 2, Insightful
    On IBM's web site, for instance, they state what power-saving settings they use to get the battery life specs they claim (hint, if you need the screen more than 1/2 illuminated, you're screwed).

    One man's long life is goign to be another man's power hog. It all depends on how you use the machine and how you set up the power saving features.

    --

    "I'd rather be a lightning rod than a seismometer." -Ken Kesey

  12. Apple by Anonymous Coward · · Score: 3, Interesting

    I have a two year old battery in my Powerbook and it still lasts about 4.5 hours. The damn thing goes forever. Just keep the screen brightness down. Besides, they look pretty and all the girls in the coffee shops come up to you!

  13. Re:Plug it in, Plug it in! by dhakbar · · Score: 2, Funny

    Geek-scented Glade plug-ins have shown to be rather unpopular, especially in a public place.

  14. Centrino Based by DrAegoon · · Score: 3, Interesting

    I've been very happy with my Thinkpad R40. It has a 1.4 GHz Pentium M. As long as I use low power settings I usually get about 6 hours of life. I've heard of better, but they're usually ultraportables with tiny screens.

    One problem, you won't be gaming or doing anything really CPU intensive if you want to save power. On power conserving settings, the processor runs much slower than the normal speed and the screen is not as bright, but that's going to be the case for any laptop to get the battery life it claims.

  15. Centrino by PCM2 · · Score: 5, Informative

    Not to sound like an Intel commercial, but that's largely what Intel's Centrino platform is all about. It's designed as a mix of processor and chipset that allows the system to maximize battery life.

    I have a Fujitsu Lifebook 5010 that reliably gets me just under 5 hours battery life, maybe more like 4 hours if I have wireless enabled (and there's a hardware switch on the case). Something like playing a DVD is going to suck even more battery, because of the need to spin the drive motor, but I'd wager I have enough juice for that most times.

    Centrino isn't a blindingly huge advantage, though. Fujitsu makes a non-Centrino version of the same laptop that comes with 802.11g, and I understand it only gets marginally shorter battery life, and that's all from anecdotal accounts. Centrino does a good job, but a big reason this model's battery lasts so long is because it's 900MHz (so doesn't run as hot, so doesn't need as much energy to run the fan) and it only has a 10 inch screen.

    --
    Breakfast served all day!
  16. Centrino-based ThinkPads by bcs_metacon.ca · · Score: 2, Informative

    Centrino-based ThinkPads have great battery lives... six hours and upwards, depending on usage patterns. The Centrino chipset makes a big difference in power consumption!

    --

    How appropriate. You fight like a cow.
  17. 15" iBook by gellenburg · · Score: 2, Informative

    My 15" iBook G4 regularly gets 7 hours+ worth of battery life if I'm not playing any DVDs (backlight dim, and in auto-power conservation mode). If I'm playing a DVDs or doing heavy disk I/O then I usualy get 5 hours. Maybe 6.

    1. Re:15" iBook by Anonymous Coward · · Score: 2, Funny

      My 13" iBook gets 19 hours on a single lithium magnesium alloy battery.

    2. Re:15" iBook by NilObject · · Score: 2, Interesting

      That would be a wonderful anecdote if there actually existed a 15" iBook. Numbnuts. *sigh* If you're going to make stuff up, at least TRY to sound believeable.

  18. Centrino by Robotdog · · Score: 3, Informative

    Look for a laptop with Centrino processor/mobo/wifi. The processor is either an older Banias (still good) or a great Dothan core. These are Intel processors designed for laptops, so they put power consumption at a minimum. You can also choose a slower spinning hard drive for longer battery life, and the cost of some performance.

  19. Extra Battery by MBCook · · Score: 2, Informative
    I understand your complaint about carying around extra batteries, but many laptops let you put an extra battery in a bay where a floppy/CD drive goes. Mine does. I use that to double my battery life. It does make the laptop heavier, and it's not an option on small notebooks, but many larger ones allow you do this. On top of that, my laptop is "3 spindle" which means I have room for two batteries while still having the integrated optical drive in my laptop. I don't lose my CD/DVD drive. The only time I every take a battery out of my laptop is the rare occation I need to use a floppy disk.

    Other than that things like forcing the laptop to stay in ultra-conservative power miser mode, or getting a laptop based on a low power processor (Pentium M, Transmeta Crusoe, etc) can help. Also, if you are willing to pay for it, see if there is an extra battery for the laptop you are buying that has a higher capacity than the one that ships standard. Replace the stock with the high capacity, and you've got more battery life.

    --
    Comment forecast: Bits of genius surrounded by a sea of mediocrity.
  20. Re:dell laptops by Anonymous Coward · · Score: 3, Insightful

    Parent is overly broad. Laptops with P4s may indeed have short battery lives, but I generally get 6-7 hours out of my Dell laptop with a Pentium-M (and its a widescreen laptop at that).

  21. My experience by Rosco+P.+Coltrane · · Score: 4, Interesting

    You'd be surprised how easy it is to go to the 'net cafe owner behind the counter and ask politely if you can plug into that wall socket there...

    Honestly it works. I work regularly in cafes for entire days. It just takes looking like a fool for a minute, asking permission, then pluging my stuff and setting up my "office" in front of everybody, I can stay there for the whole day. And also, if you go through enough cups of coffee, I guarantee you the owner won't ever ask you to get lost, because what he earns on you certainly outweighs what he loses in electricity.

    --
    "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
    1. Re:My experience by caluml · · Score: 5, Funny
      You'd be surprised how easy it is to go to the 'net cafe owner behind the counter and ask politely if you can plug into that wall socket there...

      But that involves breaking the cardinal rule of geekdom - i.e. never speak to anyone if at all possible. Gruff barking/grunting should be about the tops for a general social encounter such as that.

  22. Dell 600m Centrino - 8 Hours by Carbonate · · Score: 3, Insightful

    My Dell can get about 8 hours of battery life under minimal load. Of course it does have a spare battery in the media bay.

    1. Re:Dell 600m Centrino - 8 Hours by Leebert · · Score: 2, Interesting

      Is this counting the spare battery (or does the spare only kick in after 8 hours)?

      Probably if it's like any of the Dells I use. On my Inspiron, putting a spare battery in the media bay drains both batteries simultaneously, resulting often in a much better that 2X gain in runtime. (For some reason when they drain together they drain slower.)

  23. Toshiba Tecra M1 with Li-Ion by HeelToe · · Score: 2, Informative

    I have one of these for work.

    I can watch TWO DVD movies on a plane with it on a single charge.

    When I bring it home and work on it in the evening, it can sit on until I go to bed with its WiFi card on full power and not run out.

    I typically get 5h+

  24. This is going to sound like an ad for IBM by pritchma · · Score: 3, Informative

    but my laptop seriously rocks.

    I work as a developer and requested an IBM R50p with 1Gb RAM, which is plenty to handle Tomcat + IntelliJ + Firefox + Outlook + other crud.

    On the occasions where I have to go to meetings all day, I've got 8+ hours out of the battery (taking notes, wireless network etc). Admittedly, this is the extended battery (hangs a little out of the back), but with a DVD writer, 60Gb and IBM sturdiness, its definitely the best laptop I've used.

  25. iBook G3 by bedouin · · Score: 5, Informative

    Mine regularly lasts close to 6 hours on the battery, at least while doing non-intensive tasks and keeping the brightness at a reasonable level. Not to mention it never heats up to an unbearable level, even on a summer day; I've heard its fan come on maybe 5 or 6 times since I've owned it, and its usually been when I had it on a heat conductive surface (like a blanket or thick carpet).

    Nothing beats Apple laptops in my opinion, especially in the low-end. Something comparable to a 12" iBook in size, weight, and battery life, ends up costing $1500 in the PC world (at least when I checked out the Thinkpads).

  26. Laptops with the Shortest battery life? by BobWeiner · · Score: 2, Interesting

    Okay, so everyone's got great battery life with their laptop has posted in. What I'd like to know is: which laptop's have the shortest battery life? Was battery life a major factor in your laptop purchase? How many people here use their laptop as their desktop (i.e. plugged into the wall socket regularly)?

    --
    The PC Weenies: 11 Years of Online Tech 'Too
  27. Really? Portability hampered by a battery? by switcha · · Score: 5, Insightful
    Of course, one can lug around extra battery packs, but it's a pain and often defeats the purpose of having a laptop in the first place, portability.

    Oh, come off it. The handful of ounces a battery weighs pales in comparison to most of the other accouterments a mobile fellow or gals carries around.

    Besides, for most laptops, two batteries worth will far outlast any "long-life" laptop's single charge life. I'm not saying it's the ultimate in convenience, but if long life is really, really important to you, get the machine you really want and will be productive on, and then cough up for another battery.

    --
    You know what? ... A little club soda *did* get that out!
  28. apple by austad · · Score: 2, Interesting

    I get 5-6 hours out of my ibook if I turn the screen brightness down. If it's doing nothing but playing mp3's with the screen blanked, it lasts for about 10.

    Apple laptops aren't much, if any, more expensive than a PC laptop, and the battery life issue alone makes it worth the investment. Toss Virtual PC on it if you need windows stuff, but I've found that it does everything that my PC did, only better. Except for one thing, Visio VSD files. Hassle the Omni group to add VSD functionality. They already support VSX, but Visio saves in VSD by default, so you won't be able to read/edit pre-existing visio docs.

    --
    Need Free Juniper/NetScreen Support? JuniperForum
  29. Intel Centrino by Sir+Homer · · Score: 2, Informative

    Yes, Intel Centrino is more then just marketing hype, all Centrino laptops have longer battery life then typical laptops.

    linkage

    The catch however, is Centrino laptops are also underperformers compared to regular laptops.

  30. Fujitsu Lifebook P-5020D - 8-11 hours by tezzer · · Score: 5, Informative

    My Fujitsu Lifebook P-5020 claims to have 11 hours of battery life, but I've never gotten more than 8. Of course, this is with the built in wireless on, so I'm sure if I turned off the wireless and dimmed the screen I'd get more.

    It's a small laptop with a slower chip (~1Ghz), which is exactly what I was looking for. The laptop almost fits in a 1-gallon freezer bag, but remains fully useful. I carry it around in the front pocket of my backpack or a thin leather valise. It plays DVDs just fine, burns CDs just quickly enough, has excellent wireless antennae, and the long battery life and portable size make it fit my needs for a non-desktop-replacement portable computing machine. Apparently you can get it to dual boot your favorite distro, but I haven't had the motivation to tackle that yet.

    Incidentally, I bought the machine from Portable One in San Jose, and I recommend them- good customer service and good selection, with reasonable prices.

    --
    (Celui que tient la peur de devinir nuage)
  31. Powerbook experiences. by jelwell · · Score: 5, Informative

    My old Titanium powerbook stood up to the DVD test. Right before the second Matrix movie came out I sat down and tested the length of the battery. I put the powerbook in "DVD Playback" mode in the Energy Saving system panel - which means "NO ENERGY SAVING" (brightness all the way up, no spinning down of hard drives). Anyways, the Titanium 15" powerbook was able to display the whole movie beginning to end. Which was great for waiting in line.

    My newer Aluminum 15" (firewire 800) Powerbook can NOT do this. I can NOT play an entire DVD from start to finish with sound and everything running at full tilt. It's possible with some fudging of settings I could get a whole movie to work -but I haven't tried.

    I imagine the two biggest consumers of power during DVD playback are
    1) DVD drive spinning
    - this could probably be mitigated by ripping the movie into quicktime and playing off your hard drive (which I believe consumes less power than the DVD drive)
    2)Powering the speakers.
    - Someone clue me in here, but I imagine you'd save power if you plugged your headphones in rather than powering the onboard speaker. And you'd get a better experience plugging the sound output into an entertainment center too. ;)

    Joseph Elwell.

    1. Re:Powerbook experiences. by rsmith-mac · · Score: 2, Interesting

      Under my 12" PB, "DVD Playback" most certainly spins down the hard drive, and it's been that way on other Apple products as long as I can remember. Now, everything else is cranked up(including the processor, oddly enough), but the hard drive is turned down, which is what allows it to run the DVD drive without such a large power hit.

    2. Re:Powerbook experiences. by mdarksbane · · Score: 2, Informative

      Don't use the DVD playback mode, simply enough :)

      You don't need an Albook running at full speed to play a DVD, whereas on an old Tibook that was a possibility (although I can run mine in low processor speed for it fine).

      What's really sucking your battery, though, is that lovely 15" screen. My personal experience: watching a dvd with screen at full brightness gets a little under 3 hours of life. Watching at half brightness (an almost unnoticeable difference unless you're in direct sunlight or something) gives me almost 5 while watching movies.

      The backlight on the LCD just sucks power like crazy.

  32. Sony Picturebook + ext pack by jridley · · Score: 2, Informative

    I'm sort of toying with selling my Dell "desktop replacement" laptop, as that didn't work out (I wound up getting a desktop anyway) and instead going for a lightweight. The Sony Picturebooks with 600-800 MHz transmeta processors are commonly available on eBay for $1000. you only need 700 MHz to play DVDs smoothly, and a friend has one of these with a little add-on battery pack that snaps onto the bottom and gives him 6+ hours. It raises the keyboard into a nice typing angle and the whole thing is still well under 2 KG.

    A 700 MHz or so machine with a nice screen, that was very small, would be nice. I've got a Dell monster now and I never take it anywhere because it's too damn heavy.

  33. Dual Batteries by Quad_Junkie · · Score: 2, Insightful

    Hello All

    My 0.02, try and find a laptop that can take dual battery packs. That should allow plenty of time to do just about anything :)

    You could go with an external battery pack but all of the ones I've seen are pretty pricey and add to the overall bulk of a laptop.

    Good Luck

  34. Re:Lost Life by ptomblin · · Score: 4, Informative

    Yeah, batteries do that. Over the course of two years of heavy daily use, my Powerbook's useful life went from 5 hours to about 45 minutes. I bought a new battery and it's back up to 5 hours again.

    --
    The next Cmdr Taco duplicate will be ready soon, but subscribers can beat the rush and see it early!
  35. Re:dell laptops by dchamp · · Score: 3, Insightful

    My Dell i8500 will run for about 4 hours under "normal" desktop use running Linux, with an Orinico wireless card in it.
    As to the original post... you know they usually have AC power available at net cafe's, right?

  36. Look at subnotebooks by Michalson · · Score: 2, Informative

    A lot of sub notebooks, which are designed for travel (i.e. Sony VAIOs, ASUS M5000 and S5000, some Fujitsus) have reasonable battery life, but also have the option of using higher capacity batteries without increasing the overall weight or size beyond an ordinary (usually they remain much less). These larger batteries boost the life of the laptop into the 8-12 hour range (or even more if you look at those powered by Crusoe or other exotic power savers).

  37. Fujitsu.... by hatrisc · · Score: 2, Informative

    lifebooks especially the P-Series have great battery life. I was able to watch a DVD and a half on a single charge, and with the Bay battery and the extended battery you've got at least 12 hours.

    --
    I write code.
  38. IBM Thinkpad all the way by Nachtwind · · Score: 3, Informative

    Got a Thinkpad R40 for about a year now, Pentium-M 1.3Ghz, 512MB RAM. Battery life is about 5-6 hours with battery saving options (screen blanker, turning off hard drive etc).
    If I let it go into standby mode when not in use I never need the AC adapter the whole day. Just wonderful to go into a meeting and watch everyone else with their P4-2.6Ghz laptops (more like "portables") scramble for the one power socket in the room while I just sit back and smile ;)
    I sometimes watch DVDs on battery power while relaxing on my bed, doesn't really drain the battery as well. Imho there is no way around a Pentium-M if you want serious processing power combined with extended battery life.

  39. You don't want to hear this by fishbowl · · Score: 2, Interesting

    My Toshiba 450CDT, a 1997 model Pentium-I 75mhz, running linux in console mode, has a 10 hour battery life.

    The only thing I've ever seen do any better, except maybe a PDA, was a Tandy Model 100.

    --
    -fb Everything not expressly forbidden is now mandatory.
  40. Battery saving tips by Dan+East · · Score: 4, Informative

    There are several things you can do to get more out of your battery.

    If you have a variable speed CPU like the AMD Ahtlon XP-M then you can use SpeedSwitchXP (or similar) to force it to run at the slowest speed. For the tasks you mention 500 MHz is plenty of power.

    Rip your DVD to the HDD and play it from there.

    Disable WiFi and Bluetooth even if they aren't actually connected. They will continously ping looking for other devices, which does hurt battery life. Most notebooks have a keyboard shortcut to disable it.

    One of the most useful utils is MobileMeter. This app will show the amount of current your notebook is currently consuming, so you can play with various settings (like backlight intensity) and see the exact affect it has on power consumption.

    Finally, what's wrong with using a spare battery? Modern notebooks can hibernate and resume in less than a minute, which is trivial downtime to swap batteries.

    Dan East

    --
    Better known as 318230.
  41. P-M by magarity · · Score: 4, Informative

    The complaints you cite are slightly behind the curve. Brand new Pentium-M based laptops claim to, and really do, have amazing battery life times. My friend has a Compaq based P-M laptop with a 15" widescreen and his battery lasts 6 hours. One with a smaller screen should run even longer. Beware Pentium-4 mobiles which do suck down battery power; get the 'M' series.

  42. Re:-1: Offtopic, +503: Service Unavailable by kzinti · · Score: 2, Insightful

    Funny thing is... Slashdot was more reliable back in the days when they were handing out those 4-digit IDs. I don't think I've ever seen it is flaky as it's been the past couple of weeks... with the possible exception of the times they were hit by DoS attacks. I'd assume that this was another attack, except for that recent upgrade. New servers? New version of Slash? Sounds like good old-fashioned upgraditis to me.

  43. How about a universal battery pack? by ElForesto · · Score: 2, Interesting

    I saw an ad for this in an airline magazine, and have entertained the thought of getting one. I have no idea how well it works.

    --
    There is a difference between "insightful" and "inciteful" other than spelling.
  44. Not quite ... by vlad_petric · · Score: 4, Informative
    The two main power "consumers" are the processor and LCD (they generally account for ~90% of a laptop's power consumption). Strangely enough, the hard drive, altough mechanical and spinning very fast, is not nearly as bad.

    Most "features" of a laptop don't really consume extra power if not utilized. For instance the DVD drive only consumes power if it's actually spinning (and mencoder can can take care of that).

    To reduce the power consumption of the cpu simply put it to the lowest frequency (speedstep). 600MHz is generally enough to play a movie (DVD or .avi). As far as the LCD screen is concerned - simply reduce its brightness.

    I'd personally recommend the Centrino processor line - good perfomance at reasonable power levels (as opposed to Pentium 4 Mobile).

    --

    The Raven

  45. G3 PowerBook (Wallstreet) by texspeed · · Score: 4, Informative

    When new, easily 8+ hours at work (networking, email, docs and code) with a battery in both bays. Until one battery recently failed (6+ years old!) it still regularly gave 6 - 7 hours of effort. This is by far the best I've ever seen from a laptop.

  46. Lame by exp(pi*sqrt(163)) · · Score: 5, Funny
    There are all sorts of problems with this approach. The manufacturers claim that the surface is rewritable but after just one write/erase cycle you're seeing degradation of fidelity. You can't buy a surface with a backlight (though I believe you can get a light attachment for some styli, at many times the price of the original equipment, though with a limited field of illumination). One good thing about this approach is that the data has a long lifetime. If you use a decent quality surface the lifetime is longer than you need to worry about. But connectivity is poor and don't even think about wireless. It's also worth noting that if you want color you need extra equipment, and if you want a wide color gamut this equipment may start getting bulky and incompatible with the erase feature.

    One nice thing is that nowadays this approach is quite interoperable with PCs and Macs. Tools to convert to the 3M format have been available for decades and now tools to convert from 3M to a digital format are almost as ubiquitous. On the down side there are some claims that the 3M approach can harm the environment, after all, it does grow on trees. On the other hand a high proportion of discarded equipment can be recovered and processed for reuse.

    --
    Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
  47. Use a laptop with Pentium M CPU by Mike+Rotch · · Score: 3, Insightful

    For the x86 side, use laptops with Pentium M cpus for the battery/perf. The whole Centrino marketing thing is based on using this cpu with other intel hardware to maximize battery life. I have a x1000 compaq with 15.4" screen and it has lasted a little over 4 hours. I think it could have gone a bit more if I employed more power saving features. I even watched FOTR on battery. I had the dvd ripped to the HD so the dvd drive was not it use. I am not sure if it would have lasted with constantly spinning the disc. But basically if you really wants lots of battery life, use laptops with smaller screens (10" or 12") and keep 'em dimmed. Also minimize the use of the HD.

    I also have iBook 12" and I have used it for over 5 hours on battery. I stopped using it after 5 hours so I am not sure how much more it would have gone for.

  48. IBM X40 by mertner · · Score: 5, Informative

    My IBM X40 (it's a Pentium M, 1GHz) runs 7 hours on a charge of the 8-cell battery.

    Total weight is only 1.6kg with the battery, and the laptop is great for everything except graphics-intensive games. The downside is that there is no DVD drive except with a docking station, and it has only a 10.4" screen running 1024x768.

    It suits me perfectly for a transatlantic flight though and plays DivX very well for several hours :)

    --
    -- As long as the answer is right, who cares if the question is wrong?
  49. Re:ThinkPad by BoxO'Luke · · Score: 2, Informative

    I use an IBM Thinkpad R40 1.3 GHz Pentium M with a 15" screen and I usually get 4-5 hours of use with near full screen brightness. If I use even lower battery settings, I can sqeeze 6 hours or more out of it with the wifi on. When watching DVDs with a screen brightness high enough for outdoor use, I can get through one 2hr movie and have a little time to spare. It is a little heavier at 5.6 pounds, but it has been a great little notebook.

  50. Fujitsu!... by Chordonblue · · Score: 2, Informative

    I recently had to purchase a lightweight laptop for my boss. His requirements? That it be lightweight, long battery life, and have a few bells and whistles (DVD playback, wireless, etc.)

    Well, we ended up getting this one:

    http://webshop.fujitsupc.com/fpc/Ecommerce/build se riesbean.do?series=P7

    The Fujitsu 7000 series has a hell of a lot of bang for the buck and if you are interested in long battery life - it's hard to beat this. Fujitsu claims that the 7000 series can run for up to 11 HOURS on battery power. This is, of course, using the modular bay for a battery.

    Nonetheless, it seems he's able to get over 5 hours on just the single stock battery for non-DVD use. Centrino-based laptops are very well designed and when used with the ultra-low voltage processors are unbeatable, IMHO.

    Finding a dealer though... That's the REAL challenge...

    --
    "...Well, there's egg and bacon; egg sausage and bacon; egg and spam; egg bacon and spam; egg bacon sausage and spam..."
  51. For articles, specs, other basic stuff by Flexagon · · Score: 2, Informative

    The very best solution I've ever had for writing up all kinds of documents, taking meeting notes, and doing other basic things such as PIM, yet maintaining long battery life and low weight, is an HP Jornada 820 (WinCE). A real 8-10 hours on a full charge, a real, touch-typable keyboard (the only bug was a misplaced caps-lock key thanks to MS's strong-arming the initial H/PC keyboard layout), and a screen more than sufficient for writing draft and some final documents (640x480). Also meeting-friendly (no fan, true instant on, one click to turn off all sound, no scrounging for an outlet, no panic when the meeting takes longer than my battery). Anything smaller is not touch-typable and anything bigger might as well be a laptop. It can sync with a fully loaded laptop that stays at my office or hotel room, where I'd be more likely to watch a DVD anyway. Unfortunately, this form factor has not succeeded for a variety of reasons, an important one being that one must give up something significant to get really good battery life. Today, I'd probably pick a very small form factor notebook to retain a touch-type capability, and cut its other features to the bone (slow processor, minimal disk, RAM; no integral CD/DVD). Leave all the power in the desktop-replacement laptop that lives a less mobile life.

  52. Get Thinkpad T4xp by janoc · · Score: 2, Informative

    My T41p (T42 is out already) lasts 4-4.5 hours going full speed with the larger (9 cell) battery. With power management on (lower backlight, CPU throttling etc), it last cca 6 hours without problem. Should be more than enough for your needs. Another plus - the HW is completely Linux friendly, everything is supported and works.

    1. Re:Get Thinkpad T4xp by Munna2002 · · Score: 2, Informative

      Yes, same here. :-) The Thinkpad T40p is a great machine and has builtin wireless (mine has a B, but the newer ones have G speed). There's also built in infrared, 7200 RPM, 60 gig, 512-1024 MB ram, and the best hands-on ThinkNav laptop mouse. Once you use the mouse, you can never revert back to the eww, the touchpads.

      Plus, it has a 64 MB ATI FireGL card which should handle Doom3 fairly well. The p at the end of the T40 denotes the top of the line stuff with extended battery life, even though it is a bit expensive. But it's definitely worth it. I'm sure if you look around on the web, you can get them for $1700+ (USD).

      To me, if you're not a Macintosh person, then its equivalent is Windows XP/Linux's IBM Thinkpad T4xp series which is just as reliable and has a long laptop usability life.

  53. Re:iBook running Gentoo with 2.6.7 by ainsoph · · Score: 2, Funny

    Where do you find a job that only lasts 2 - 2 1/2 hours a day?

  54. Re:Lost Life by Anonymous Coward · · Score: 4, Informative

    I had the same problem. The capacity is still in the battery but the smart controller in the battery gradually loses track of the zero level and reports less and less charge.

    To fix it you need to run the battery _completely_ dry. Run it for as long as you can until it enters sleep because of perceived 0% charge. Then let it sleep (of course without a charger attached) until the battery is exhausted.

    The problem is that since there really is plenty of charge in the battery it can sustain sleep for many days :-(

    Since the machine will turn off when the battery is exhausted be sure to close all running applications before setting it to sleep.

    Once the machine turns off you can recharge the battery again and take advantage of the full capacity.

    If you are electrically inclined I guess you could place a 1K resistor between + and - on the battery to drain it more quickly.

  55. Re:is there a technological barrier? by LrdHlmt · · Score: 2, Interesting

    What I meant was some sort theoretical limit to a Nickel-Cadmium (or alike) battery. I was trying to make an analogy cause, you probably know, there is a limit (at least in thoery) to the speed "the best semiconductor transistor" can switch from one state to the other. Scientists are pushing the techonolgy to this limit until eventually we will have to switch to something else. So.. may be (chemical reaction batteries) as we know them have reached a limit already.

  56. 15+ hours battery life here. by Hackeron · · Score: 4, Informative

    I own the Fujitsu P2110 - 866mhz Transmeta Crusoe + 512Mb ram, and 60Gb drive (updated).

    I have the extended + modular batteries, each give over 7 battery life, and I managed to squeeze over 18 hours from light to average usage (with pcmcia powered down, battery management set to performance and screen brightness on just under medium).

    The laptop itself is a little slow, but seems to be perfect for reading books, watching movies/dvds and programming (with distcc). High bitrate divx play perfect, and even certain games like warcraft3 can be made playable under wine. (ATI Rage Mobility 8mb, with accelerated gatos drivers).

    Also great linux support, and works pretty much out of box with everything. Sound card has hardware mixing (amazing that nforce2 and many via chips dont). There is also an optical out to plug to your hifi at no loss of quality!

    Overall, highly recommended laptop that I had for around 2 years now that can be gotten dirt cheap. Slight show of tear like headphone jack has bad contact now (only if you touch the plug though, so not dramatic). Cant see me replacing it anytime soon though.

    There are newer transmeta based laptops as well, and if battery and portability is your goal, they beat centrinos in every possible way (centrino requiring 2-3 times more power, bigger heavier batteries to provide similar battery life at the gain of performance).

    Anyway, just my opinion, yours might differ, but over 15 hour battery life impressive by any standard.

    1. Re:15+ hours battery life here. by Hackeron · · Score: 2, Informative

      to tell you the truth I never measured, but its 2 batteries, so they charge fairly quickly together.

      For example if I go out, use the laptop to watch a 1.5 hour movie (on lowest brightness on train), then use it for a further 5-8 hours at the office/meeting/etc, then watch another movie on the train (leaves around 30% after that), come back, plug it in, charge will already be at 90% while I change, eat, surf a bit, so I would say 2-3 hours to charge from 35% to 90%...

      Modular battery is 10.4V with 3400mAh, main extended is slightly more. Laptop weighs around 1.5kg with modular battery has a 10" 1280x768 wide screen (visible in direct sunlight on full brightness).

      So a pretty nice tool. Here it is at work: ftp://public:asd@81.86.159.146/latest.png - so you see, its pretty fast if I can watch a movie, chat, surf, check email, code, have a few konquerors open with many tabs, view images, etc at the same time without slowing down the movie. The window manager is ion3.

      Keep in mind this 866mhz 3Watt CPU benchmarks at 400mhz P3, so if you're the kind of person who likes dual AMD64s and think a desktop requires atleast 2.8hgz, then look someplace else -- this will *not*, I repeat will *not* run windows at adequate speeds. KDE however runs just fine (3.3b2), gnome is slightly laggy. But a lighter wm is recommended.

  57. Compaq TC1000 (Transmeta) by worldcitizen · · Score: 2, Informative

    With the transmeta long-run utility set to max savings, low display brightnes and no wireless I was reading an e-book during a transatlantic flight and it still had a significant amount of spare juice in the battery at the end of the flight (well, it wasn't exactly the entire flight, I did power it down during takeoff and landing ':)

    This machine doesn't have a dvd-drive so I can't comment on that (I guess I could get a decrypter and copy a movie to the hard disk but I haven't tried that)

    They're very lightweight and you can find them on ebay at reasonable prices

    Application startup performance is quite bad though :(

  58. It goes down anyways by metalac · · Score: 2, Funny

    you have to realize that no matter what battery you get it seems that as they age the time they give you goes down, so at the end you always end up with solid 1-2 hours of usage. I'm not sure what the deal is with the Centrino based ones, but I think they'd do the same after few months of continuous usage.

  59. dvd idle - probably mentioned here before by dgoldman · · Score: 2, Informative

    If you want to watch a whole dvd, has anyone tried programs like dvd idle? It claims to optimize caching to minimize the many spin up/shut down cycles. It won't help with burning but for watching a movie, it looks like a no-brainer.

    Just an opinion.

  60. Re:IBM X40 by iocat · · Score: 2, Informative
    My IBM Thinkpad R40 (1.3Ghz Pentium M, built in DVD/CD-RW) has done >180 minutes while playing DVDs (two of them -- Lion King and Nemo (yes, I was travelling cross-country with my son)), and >6 hours while just writing and or surfing. That was when the battery was brand new, but I still see several hours of life when just surfing, etc at home. I've really pounded the battery (probably a near full discharge daily for the past year) too, but performance remains good, even after upgrading to a 7200RPM drive. My screen isn't giant, and dimming that and using IBM's power-management stuff seems to make a great difference.

    Battery life and system performence were my main criteria when searching (yeah, I know they can be in conflict!), and I am extremely happy with the ThinkPad. Even after a year, it continues to amaze me just how well IBM designed (and built) this machine.

    --

    Dude, I think I can see my house from here.

  61. Big fan of the PB 15" by awtbfb · · Score: 3, Informative

    I'm now on my 3rd PB 15" (still have 2nd) and I've always been amazed at the batteries. I even was able to get a higher capacity battery from Apple since they jacked up their battery to support a CPU speed bump. I've routinely been able to watch full length movies on DVD when flying cross country and squeeze in a bunch of work with maximum power saving practices (dim screen, etc). Another nice touch is the ability to check the battery strength while the computer is hibernating or off (button and LEDs on battery).

    Recently I've also become a big fan of the Kensignton Universal Car/Air Adapter. You can also get a version that works for AC wall power too so you can leave the stock brick at home. The Car/Air one is super light and works with both Empower and cigarette lighter style jacks. I cannot tell you how valuable unlimited DVDs and games are when you need to pacify a kid who can no longer be amused by more preferable diversions. And of course it's always fun when 4 hours into your flight all the other laptop users are looking longingly at your super bright screen while theirs are pitch black.

  62. Sony Vaio TR3 by tstoneman · · Score: 2

    Not only is this laptop so damn beautiful, but on the regular batteries, I can get over 5 hours. I bought it specifically for things like long plane flights so I can play nethack and kill time.

    It has a killer sharp widescreen, and comes with basically everything you need.

    With the larger battery, you can get 7-10 hours.

    I was going to get the Dell 300m, until I found out that it doesn't come with a DVD player built-in. Who the hell wants to deal with a modular DVD player on a plane? Hell no!

    I love the Sony TR3.

  63. Thinkpads by swillden · · Score: 3, Interesting

    I can't recommend the IBM Thinkpads too highly. They're not the cheapest laptops around, but they're really well-made. I have a T40 with an extended-life battery, and I can get nearly eight hours out of it if I'm careful (dim the screen, turn down the CPU clock, use Linux 2.6 laptop mode to keep the disk spun down as much as possible) and around six if I'm not (watching movies on DVD).

    Beyond battery life, my T40 is built like a rock, a fact my head can attest to. I was in the passenger seat of my car a couple of months ago, with my T40 on my lap, when my wife fell asleep and went off the road, rolling the car four times starting at about 70 mph. The laptop bounced off my face, beating the hell out of it (my face, not the laptop) and was then ejected through the window. I'm not sure if the laptop broke the window or if it was already broken. The T40 was picked up from where it landed in the dirt about 100 feet from where the car stopped. Damage? Well, one of the USB ports was damaged (the one that had my mouse plugged into it -- we never found the mouse), the lid latch kind of sticks when you try to close the top, and the case has a couple of minor scratches.

    I've had three previous Thinkpads, too, and they've all been excellent, well-built and well-designed machines. Some of the others didn't have great battery life, though.

    IMO, if you want a really good x86-based laptop, buy a Thinkpad. If you want the best possible laptop, and don't need to run Windows, buy a Powerbook.

    Disclosure: I work for IBM, and own IBM stock (and Apple stock, and Dell stock) but I don't think those facts affect my opinion. If you don't believe me, ask me about some other IBM products, like, say, Lotus Notes.

    --
    Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
  64. Re: Uniqueness of Powerbooks by King_TJ · · Score: 2, Interesting

    I, too, must agree! I went with the other end of the spectrum - buying a 17" Powerbook. But in its class, it's completely unique too. I've had several buddies criticize my decision, saying "You're paying too much for too little CPU power!" and so forth, but where else can I go to get a 17" LCD panel in a laptop this thin and lightweight? Furthermore, who else offers the backlit keyboard feature, or the slot-loading DVD burner (no flimsy tray to break off)?

    One of my good friends bought a high-end Sager "gaming laptop", arguing it was a much better value for his $ than my Powerbook 17" was for mine. Only 2 or 3 months later, he's already talking about getting rid of the Sager. Why? He says "The fans are too loud!" (Not only that, but its battery life is abysmal, it's "thick as a brick", and as he also complained about, the speakers are terrible in it too.)

    On the plus side, the Sager uses a higher-end LCD 17" panel than my Powerbook does. (The rumors have it, Sager originally spec'd their laptops with the exact same panel Apple uses, but Apple outbid them and bought up all the supply for their Powerbooks. At that point, Sager just ordered the next model up from what Apple used.) It really does look beautiful - but a display alone doesn't make the laptop.

  65. Called! by jht · · Score: 5, Informative

    I have a new 1.5 GHz 15" PowerBook. It gets a consistent 4+ hours of life in "regular" use - that doesn't mean watching a DVD, but it does mean writing documents, surfing the net, checking my e-mail, and so on. It also gets that kind of life with both Bluetooth and AirPort Extreme live and kicking.

    For power conservation, I let the processor cycle down as needed, and I spin down the HD after 5 minutes. I also have the brightness dialed back to about 70% when on battery - that's usually good enough for me. But that's all the steps i need to get over 4 hours. If I were a little more aggressive, I might be able to break 5.

    Part of the difference I think is the newer PPC 7457 processors - I believe they're pretty light on the power consumption (I don't have the actual specs handy).

    --
    -- Josh Turiel
    "2. Do not eat iPod Shuffle."
  66. Go old - PowerBook G3 by mk2mk2 · · Score: 2, Interesting

    I have one of Apple's PowerBook G3 (Firewire a.k.a. Pismo a.k.a 2000) models. It's been upgraded from 400 MHz to 900 MHz and from 64MB RAM to 512. It runs Panther pretty well...I wouldn't open my 1400-picture iPhoto library on it (that's what the G5 is for :) but it does great for random web browsing, word processing, etc. You're still mostly up to date technology-wise since this machine includes an internal Airport 802.11b slot, USB, FireWire, and 10/100 Ethernet.

    The key to the Pismo is that it is the last PowerBook to include an additional bay which can hold the stock DVD-ROM drive or another battery (or various third-party fixed and removable drives). If you buy one of these machines used of course you shouldn't expect too much out of the battery included but you can always add one or two high capacity batteries. I have one that gives me 4-5 hours of careful use (no DVD watching) plus one original Apple battery that just gives me an hour. The only problem is weight - with two batteries installed the machine gets up to 8 or 9 pounds. But, working at a university with total WiFi coverage I find it quite worthwhile to bring everywhere I go on campus without having to pack the power adapter.

  67. Inspiron 300m by blackrobe28 · · Score: 2, Interesting

    I've been using an Inspiron 300m for about 3 months now. I've got the extended battery, which ups the weight to about 3.2 lbs) and I can get ~8 hours using it for surfing and typing... ~6 hours playing DIVX movies at full brightness. If I want to play DVD movies, I pop it into the base which has an extra battery (this ups the weight to about 4 lbs) and I can get ~9 hours watching movies.

    --
    Blackrobe "The Original TechnoWeenie!"
  68. Dump the ROM Drive and RIP your movies by major.morgan · · Score: 3, Informative

    I make it through 6 hour flights while watching movies constantly and still have enough left over to check my email when I get off the plane.

    I use a Dell C600 (PIII-1000-Speedstep)
    First I pack the ROM drive away and replace it with the second battery. I also carry a 3rd batt just in case. Second I also RIP my DVD's (DVDDecrypter) to the hard drive - spinning the harddrive takes far less juice than spinning a DVD. Lastly I use a hardware & user profile that has any extraneous devices, apps, utilities disabled.

  69. Psion 5mx by chimpo13 · · Score: 4, Interesting

    Man, I'm late with this one. By now since there's 568 responses, I hope it gets noticed. I'll be a weenie and post it to a top response.

    If your clients are just looking for something to check email, web access and are willing to save in .txt they should get a Psion 5mx. I've done plenty of research on this because that's what I need for my trip round the world. They run off AA batteries which last 20-30 hours.

    But of course, it's not the newest and latest, and the screen is black and white. But if your clients are geeks, there is a linux version of it.

    Good retailer of refurbished ones. Linux version.

    If anyone buys one, please mention my name: Dave Smith. I'm riding a small motorcycle round the world and Paul at Psionflexi has been really helpful.

  70. 11.5 hours by angrysponge · · Score: 2, Informative

    Dell CPx, PIII, 500Mhz, 1024x768.

    Two brand new 4460 mAh batteries, which are ~20 bigger than what the laptop shipped with years ago, yields over 11 hours of phun.

    And for that, I can live with the low rez.

    Toss in Gentoo, gcc 3.4.1, and compile everything with -O3, and you've got a snappy little machine, mang!

  71. Re:IBM X40 by Lalakis · · Score: 2, Informative

    > on Linux there's no practical way to get the OS
    > not to access the drive at least a few times per
    > minute. It would be nice if there were.

    Of course there is a way. It's called laptop_mode kernel patch and 2.6 kernel has it (also, the 2.4 kernel from fedora 1, has it). If you have that, then you mess a little with /proc/sys/vm/bdflush and with hdparm you set the drive to spin down every 20 seconds or so and you are ready to go!
    I have an IBM T41 which runs for about 3 hours normally and for almost 4 hours if I spin the drive down with this way.
    Also, cat *ogg > /dev/null before playing oggs, helps a LOT!

  72. Dell Inspiron 8600 by firegate · · Score: 2, Informative

    My Dell Inspiron 8600 (with the centrino 1.7, 1920x1200 wuxga display, 80gb hdd) gets a good 7 hours of usage for things like surfing the internet/typing with the second battery installed in the modular bay and the display contrast all the way down.. not bad for such a monster of a laptop, considering its faster than most desktops.. with the dvd drive installed in place of the secondary battery, it'll play through a full movie and still have about an hour left..

    --
    "Make it idiot proof, and someone will make a better idiot."
  73. Re:Nota Bene by abb3w · · Score: 2, Insightful
    Most "features" of a laptop don't really consume extra power if not utilized.
    Note that wireless cards consume a decent chunk of power even if you aren't actively doing things with TCP/IP. Removing PCMCIA or USB adapters, or (for those that support such) switching off an internal wireless adapter when not in use will increase battery life by a decent fraction.

    --
    //Information does not want to be free; it wants to breed.
  74. Re:IBM X40 by dublin · · Score: 2, Interesting

    > on Linux there's no practical way to get the OS
    > not to access the drive at least a few times per
    > minute. It would be nice if there were.

    Of course there is a way. It's called laptop_mode kernel patch and 2.6 kernel has it (also, the 2.4 kernel from fedora 1, has it). If you have that, then you mess a little with /proc/sys/vm/bdflush and with hdparm you set the drive to spin down every 20 seconds or so and you are ready to go!


    And the /. crowd wonders why ordinary computer users won't run Linux as a desktop/laptop OS...

    --
    "The future's good and the present is nothing to sneeze at." - Roblimo's last ./ post