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Build Your Own iPod Battery
OmniVector writes "With various complaints about the iPod battery's life, and its mere 10-8 hours of charge many of us are left looking for a way to keep the tunes kicking a little longer. Drew Perry has come up with a novel solution which can only run you a few bucks for an extra 10 hours of battery life out of a box of playing cards and a everyday batteries. Not bad for that long car trip where you just don't have a firewire charger handy."
Why would I cary around such an ugly thing? I'd rather just buy a 2nd iPod.
explaining your stack of batteries when it shows up on the x-ray at an airport. ;)
...by dissecting your iPod, why not buy this ?
That's pretty slick. Now just stick the batteries in something nice and shinny that will go beter with iPod's sexy design, and we're cooking with fire.
Buckethead
Somebody should do something like this for the Nokia people. Or not? :p
Anywayz, this is a really nice hack, but I doubt the cardboard will unplug rather nicely (that is to say, if he would need to unplug it several times, but he probably won't since the batteries will be dead)
And I know my language is bad, I just got out of bed
Advantages
Not compatible with iPod mini.
straight quote.
This article is how to build your own Belkin battery pack for cheap.
...
Naughty naughty, you didn't read the article did you
; -- the corruption of government starts with its secrets. a truly free people keep no secrets. --
More like 4-7 hours on the third generation iPod if you skip tracks frequently and don't listen in a continuous block.
Which is why I returned mine. Apple were forced to acknowledge that their claims about battery life may have been misleading when I showed them the Australian Trade Practices Act sections about misleading and deceptive conduct.
My 2 cents: buy a minidisc player. Better battery life, physically tougher, smaller. What's the point of having 10,000 songs if you can only listen to 7 hours worth in a sitting?
Read Pynchon.
We want solar iPod now!
placing two cells in parallel can mean that one will discharge through the other - a stack of 6 or 8 AA cells in series would be better
Seems to me that should the battery deal go wrong, the card box is very conducive to fire.. fire on batteries... box go boom?
That's me being paranoid, but I recently heard of a colo facility destroyed - burned to the ground - by exploding batteries.
Well, with a NetMD minidisc recorder it takes a few minutes to transfer whatever you want onto a minidisc. I can live with that. Furthermore, it will play for around 30 hours on an AA battery, so if you take half an hour to organise a few LP MDs you're set for days of music.
Read Pynchon.
THIS IS NOT SAFE!
There are 2 x 1.5 volt cells in series
And 2 x 9 volt cells in parallel
I know for certain this causes heat problems during charging or discharging because of the charge inbalance between the cells.
This could lead to explosions in extreem cases.
If you need to build one, I would suggest removing one of the 9 volt cells or adding 2 more 1.5 volt cells in parallel
As I do, if you've ever taken it apart you'll notice there is quite a bit of space left in there. The battery is quite thin. I've often wondered if you could just buy another battery from say www.ipodbattery.com and install it internally, coupled in parallel with the original one. (same voltage, twice the capacity) Any EE's could verify if this would work?
Yes, have second thoughts! I'm not proposing that iPods stink or anything of the sort, but if you are like me, i.e. serious about listening to a lot of music rather than looking at a shiny white thing, then iPod may not be the ideal solution. I am on the move a lot, and for me an average of 6 hours playback was just never going to cut it.
With NetMD, using Sony's (admittedly pretty shite) software you can easily transfer MP3s onto minidiscs in no time. The program takes your MP3, converts it into a (seperate) MD-formatted audio file, then copies it via USB to the MD player. By ripping and maintaining your own MP3s outside the Sony software managing your music is pretty straightforward.
Minidisc uses ATRAC, see here: http://www.minidisc.org/aes_atrac.html
Read Pynchon.
Buy a 40-hour iPod battery for $100 bucks.
That's Right. 40
Instead of using NiMH or Alkaline AA battery pairs, Li-ion batteries are fantastic too. A comparison with 2xAA batteries and CR-V3 batteries show that CR-V3 battery charges last longer and have a longer lifespan.
Wouldn't it be better to use the rechargable batteries you can buy at BestBuy or Target instead of burning up those AAs and 9vs for 10 hrs of play time?
Who, when advertising, underestimated the possible battery life? All the quotes I remember about battery life (but I have not checked for the iPod) are based on "optimum conditions" or "up to" however long.
Whoever the manufacturer I think their claims (max speed, time, savings etc) are mainly calculated, theoretical maximums.
Real life is rarely optimised.
Tracker.
6 pin Firewire pin assignment (& others)
;)
Need to know which ones are the power pins, right?
Anonymous Joe
I wholeheartedly agree. Is anyone aware of any work being done to get freeware software for MD happening?
Read Pynchon.
Sorry buddy, but your second solution is just as bad. You should NEVER have batteries in parallel. At best your batteries will discharge much faster than they ought to. At worst, they overheat and go BOOM.
I'm assuming he chose this configuration because a 9V will discharge faster at a given current than a AA. (I don't know anything about battery capacity, so this is a supposition.) If that's the case, the best thing would be to just get rid of one of the 9V's and carry the extra as a spare when the first dies.
The first problem with the battery pack is that it is grossly unbalanced. He shows alkaline batteries in it, so let's cruise on over to www.energizer.com and get some specs. A 9V Energizer has 625mah while AA Energizers have 2850mah capacity. Parallel the two 9V and you are only up to 1250mah, which means that the two 9V batteries will be dead before the AA cells are even half of the way used up.
Next, he is using expensive and environmentally harmful alkaline batteries rather than NiMH rechargeables. According to the EPA, Americans throw away 2 billion non-rechargeable batteries per year -- almost all of which end up in landfills. The single largest source of mercury in garbage is alkaline and button cell batteries. He took an iPod that had a battery pack that could be recharged for about a year and a half and made an alkaline pack that has to be thrown away every ten hours! It's projects like the one described here that make me think that the feds should ban all non-rechargeable batteries bigger than button cells.
Since the iPod would run on anything from 8-30V, he would have been a lot smarter to use 8 AA NiMH batteries in a case like this or this.
it'll come bundled with a flashlight! just shine the beam on that little panel to continue enjoying your music...
Instead, either use two 4-way AA cell holders in series with non-rechargeable cells(for a total of 12V), which are available from most electronics distributors, or a combination of 2 and 4 way holders to allow the use of 10 NiCd or NiMH AA or AAA cells - also for a total of 12V since these cells run about 1.2V each. With a diode and a resistor you can trickle charge this arrangement through a car lighter plug, since car batteries run around 14.5V. It's a kludge but a feasible kludge.
I wonder if anyone has looked at modifying the works of a Freeplay radio (wind up dynamo) to act as a charger for small appliances like iPods?
Panurge has posted for the last time. Thanks for the positive moderations.
Backup battery pack
LotD
How about larger batteries? Long trip/etc? Lantern batteries are $6-7 a pop, and come in 6 and 12v varieties. Excessively large? Yes. Cheap? Yes.
Something else that has crossed my mind; using a small 12v battery (riding lawn mower/radioshack dual lantern battery) + cigarette lighter + powerbook cigarette lighter power adapter for those long plane rides/trips where you don't have immediate access to an outlet for more than 5 hours at a time. Certianly cheaper/more flexible than one of those $300 external laptop batteries.
moox. for a new generation.
...in his iTunes music library he has the artist of the song "Stuck in the Middle with You" as Bob Dylan....fishy...
I belong to the ______ generation.
I'm assuming he chose this configuration because a 9V will discharge faster at a given current than a AA.
He chose this configuration only because he was trying to be clever and fit it into a playing-card pack.
As to what you're assuming - no. Battery voltage is determined by the chemical type of the battery. Size doesn't matter. So for example, standard alkaline AA, AAA, C, and D batteries all put out 1.5V, but Ni-Cads put out 1.2V. Lead-acid like your car battery is 2V.
Therefore, a 9V battery is just six tiny 1.5V batteries in series. Get some tin snips or whatever, and carefully cut open the outer casing on a 9V and you can see for yourself.
Also, you *can* safely run batteries in parallel. The only gotcha is that you can run into problems if you try to charge the batteries in that configuration when they are not evenly discharged. His picture looks like he isn't using rechargeable batteries, though. Or if you had rechargeables, you could pop the batteries out and charge them individually.
Personally I think it'd be more straightforward to just wire up 8 AAA batteries in series and forget the 9V nonsense. Probably would get longer battery life too. I don't know if they'd fit in a playing-card pack, but they wouldn't be much larger.
Since I found it difficult to research how to upgrade and repair such electronic devices, I have setup pages with links to HOWTOs for portable music players, laptops and notebooks as well as PDAs. BTW: there is a also a selecion of Linux tools to connect to portable MP3 players.
1) Different battery types will lead to different discharge rates... in other words, when a battery is flat, you have to take them all out and test individually.
/. has sunk to? I mean, there's got to be funnier or cleverer stuff than this out there.
2) The circuit is hardly clever or novel; no lights to tell you when the batteries are reading the end of their useful life.
3) Gluing plastic on cardboard.... does this pass for elegent or clever? If so, let me show you some really "clever" things I've done with a fanbelt at 3 AM to keep my car going.
4) is this was
If you are going to do all that, why not put a car battery in a backpack and put a voltage regulator on it? The best point of the iPod is that it is sleek and slender, now what have you just done when you 'add' a battery?
yes i am dumb. why is this funny?
I haven't ordered from these guys (yet -- I'm definitely building a battery pack) but a few minutes in Google found them:
NTC Distributing
http://www.greggman.com/japan/electronics.htm
While he obviously didn't RTFA, on the other hand, the existence of an external ipod battery pack with LEDs to indicate the charge, a secure (by which they seem to mean locking) on/off switch and a suction-cup mount is something I did not know about before, so I'd call him informative and misinformed, simultaneously.
However, 70 bucks seems kind of steep for that thing. I'm sure you could make one with all or most of its functions and that looked as good for a lot less.
Or if you just want to go on the cheap yet have something sturdier than a playing card box, got a snap-together travel soap carrier and make an ipod battery pack out of that instead. It will take a little more effort and skill to mount the firewire plug in it, but it will last a long time.
You could make this battery pack rechargable and have an even 12V output using two 9.6V Maha Powerex
batteries and two regular NiMH batteries.
I know I am just a geeky physisist by education :-), can anybody tell me what in the world was the reason to use two 9V and two 1,5V cells and connect them in a funny way, when one could just take eight AAA cells. 8x1,5V=12V bingo!
...
That will be even cheaper. And would last longer. And will fit into cardbox as well. And
...a stunned silence fell upon the hall.
Batteries in parallel (like those 9Vs) are bad, mixing battery types in series (such as AA and 9V in series), or even in brand (different brands of AA batteries) is very bad. If you're going to build this project, use 8 AA batteries in a simple series, unless you like having a pocket full of battery acid.
Read about it at. A few persons were actually injured.
Read and here a report from consumer organization in case you tend to take press releases from corporations with a grain of salt.
You would not try producing drugs yourself, will you? The high capacity cells are the same sophysticated chemistry these days.
...a stunned silence fell upon the hall.
One thing i have yet to see anyone use... if its rated for 8 - 30 volts use 2 7.2v RC racing packs in series those things were designed for Horrendous discharge rates ive used them on older notebooks with great success i figure an ipod would run for upwards of 40 hours on a pair of good sanyos
Current security prevents low-grade terrorism, i.e., the old-style 'take-me-to-Cuba' hijackings. It won't do much to stop the high-end terrorist.
As for cost effective, if Osama wants to kill americans, he should just buy a tobacco farm. He could then kill more than 9/11 did on an annual basis.
I wonder if it would be possible to make something like this external pack using an actual ipod battery (available at several online stores). Put it in a small project box of some sort with a firewire port on it and maybe some sort of led/light/whatever to indicate if it is charged.
This was admittedly before 9/11 but I used to carry 5 spare batteries for my Dell Inspiron in my carry on bag. I hate to fly and I can't sleep, no matter how long the flight is. So I used these batteries to watch DVDs.
I used to cross the atlantic several times a year and never had a problem with security personell giving me a hard time about these batteries.
The Internet is full. Go Away!!!
FAKE site!
Do you hate Jesus too?
Informative? You didn't check the link before modding, did you?
Dude, I think I can see my house from here.
I built it with a Firewire cable with a female end that I cut in half and taped to a 9V clip, then I attached the 9V clip to an 8 battery pack. It didn't need any soldering, and it should last about 20 hours. I've determined that it can be stored in either a cornflakes box or a neoprene case; a hard case would probably work too. It's pretty cool.
I thought of going the 9V route, but then it occurred to me that it's kinda pointless to have two 9Vs - 9Vs don't hold that much charge; their main benefit is that they're small. They're actually 6 tiny (and therefore inefficient) 1.5V cells in parallel. So there is no purpose in having two.
Anyone else notice that this guy's latest blog entry talks about his dead iPod? Connect the dots....
I don't see anywhere in the article which pins on the firewire socket one has to connect to pos & neg from the batteries. I'd want to be real sure I got that right before plugging a gizmo like this into my iPod.
On second thoughts, I suppose all it takes to discover this is a multimeter and the Apple charger.
Still, it would be a nice addition to the article if he would explain that.
when the iPod was originally released, everyone LOVED 8-10 hours. I get about 10-12 out of mine, consistently. All of a sudden it's a problem now.
A 9V engergizer giving out 625 mah would provide 3750 mah if converted to 1.5v (or what an AA runs at).
It's not being "converted" to anything. It's producing 9 volts. The entire circuit is two 9v batteries in parallel (thus producing 9V) in series with two 1.5 volt cells in series, producing 12V total ( 9V + 1.5V + 1.5V).
Each of those 9V batteries consists of six 625mah 1.5V cells in series. Each of the six cells is just smaller than a standard AAAA battery. If you put them in series (like they do in 9V batteries), you multiply voltage times six (6 x 1.5), and the mah rating remains 625mah.
I'm pretty sure you are supposed to open dive lights or other sealed devices at least enough to unseal them before you fly - I always take mine apart before I go on a plane. Watertight cases have relief valves for just this need. The pressure difference between the inside of the device and the outside is not good (since dive equipment is designed to keep pressure out, not in)!
"There is more worth loving than we have strength to love." - Brian Jay Stanley
in Canada I'd be all ears... I've read enough stories of people with Karmas that had their HD fail in 3-4 months that I really would want to buy it locally or at least from a Canadian retailer (I wish amazon.ca started stocking electronics!)
-- the cake is a lie
To be blunt, this design isn't so bright... Sure, it produces a reasonable voltage, but it's not a good idea to mix different types / sizes of battery in this way. If batteries are mixed in parallel like the PP3 batteries in this circuit, large currents may flow from one of the batteries to the other - it's unlikely both batteries would output exactly the same voltage. If batteries of different sizes are mixed in series, one type may discharge before the other. The discharged cell may potentially be reversed - i.e. current will flow through it backwards. Either of these situations may cause the batteries to vent gas, overheat, or if safeguards fail they may even potentially explode. This is the sort of thing that you may get away with for some of the time, and you may not see any problems immediately - but in the long term you may well burn your house down. This advice comes from experience. If you short a rechargeable battery you can draw extremely high currents (even 10s of amps) and start fires very quickly. I once melted a long piece of plastic insulation very quickly when two contacts touched at the end of a battery lead. The battery got very hot - I burned my fingers trying to disconnect it. Treat batteries with respect. I'd be willing to wager that electronics kills many more people through fire than electrocution.
but why? It's more of a 7th grade science project than a hack. Besides, for 30 bucks or so, you can get a battery adapter thingie Or if using the ipod in your car, you can get a car cigarette lighter adapter, and run a line in to the car stereo.
Other than this text, there is no discernible information contained in this sig.
Foolproof!
www.spymall.com/catalog/images/bomb_clock2.jpg
"12 volts. Since that isnt a common value for Batteries".
Doh what part of 8 x 1.5 or 10 x 1.2(NiCads) doesn't he get?
And his solution is to mix different types of batteries together.
I'm still waiting for plans for a homemade Belkin battery pack.
The difference?
The belkin packs, as you may have noticed, use only 4x1.5V. They don't charge the iPod battery, they power the iPod, getting 15-20 more hours of playtime, a better solution to me. This is probably done by jumping a pin in the proprietary dock connector of the iPod.
If someone could figure out which pin to jump or otherwise how to make this, it would be a wonderful solution.
While this doesn't seem like an incredibly safe thing to do, it's certainly nice to see someone actually doing something about his battery instead of just bitching.
No one seems to care about the fact that the guy didn't say how to connect the batteries to the FireWire connector! I mean, which pins to use, etc.
:P
He seemed more interested in explaining how to build a horrible case with the playing cards case
Now if they could only build a solution for the powerbook.. I have new 15" 1ghz, and if I am lucky I get 3 hours of battery life.
I'd pay more money if there was an after market battery that provided me with ~8 hours of life.
It's annoying to only be able to watch one or 1.5 movies on a flight...
Can't you just use a car adapter? Do those not exist anymore? Did I miss a meeting?
... I'm gonna have it play TV_Themes__MacGuyver.MP3.
"Derp de derp."
How about an aftermarket video camera battery ?
Lots of sizes, shapes , capacities and voltages. Plus it's rechargable to boot...
Those batteries are going to be eaten like candy... It would be much smarter to put together a lithium ion polymer pack and just recharge it... Stick 6 1Ah LI-P cells in the same amount of space, (2*3 arrangement) and you get your nice nominal ~11V with a hell of a lot more duration (2Ah) than alkalines, and a lot less cost. The cells will run you maybe $15 each, and will last for hundreds of charges.
It's obviously not the work of a professional engineer, but that's what makes it neat. Taking a just barely functional knowledge of what's going on and solving a problem using available tools. I suspect this guy isn't going to be the professional EE you all think he should be for at least 4 more years
Actually, I've seen a lot of EEs do the same thing, with no more understanding than the basic voltage drop analysis. You have to keep in mind that an engineering degree confers exactly the *opposite* thing to the practical knowledge required in the real world. Those people who make good engineers already got their practical knowledge from playing with Lego and hacking their bicycle.
You see, the reason why a D cell is bigger than a C cell is bigger than a AA cell is bigger than a AAA cell despite all putting out ~1.5V is because of current capacity. A modern D cell will put out 1.5V into a 1A load for many (~15) hours, while a modern AAA cell will put out 1.5V into a 1A load for around an hour and ten minutes.
Trivia question: why is there AA, AAA, C and D but no A or B? Answer: The A battery was a big 1.5V lantern battery used to heat the filaments in radios before rectifier tubes were practical to allow the radio to be plugged in to a regular outlet, and the B battery was a 30V, 45V or 90V battery used to provide the plate voltages for the tubes in these radios. The B battery stuck around until the early transistor radios of the late 1950s replaced all the tube portables. You can actually still buy both battery types but generally only through big electronic parts suppliers.
(Quoting Duracell's alkaline battery data sheets, difficult to link directly to the PDF so click on "Technical Bulletin" and scroll to page 9/13, D cell 15Ah (15,000mAh) and AAA cell 1.15Ah (1,150mAh).)
Go to Radio Shack and buy a multimeter. Stick it in current mode, and measure the current consumed by the iPod. Then look up the mAh (milliamp-hour) ratings for the type of battery you wish to use - NiMH, Energizer Lithium, Duracells, whatever. Do not mix battery types (brands, chemistries, etc), ages (new batteries and old batteries should never be put together in series), or sizes (AA, 9V, D-cells, etc.) because you will have some discharge faster than others, sometimes to the point of actually trying to "recharge" the weakest cells off the strongest cells.
Figure out which battery size you need to use based on whatever you consider to be an acceptable battery life for long trips, and use it. Of course, there will be design trade-offs in order to achieve a reasonable size - shorter battery life or bigger and heavier batteries - some compromise will probably have to be reached. If all you care about is battery life, for example, just stick the iPod directly across a car battery.
Get appropriate sized battery holders at Radio Shack or any number of electronic parts places - MCM Electronics, All Electronics, Digikey, Newark, Electrosonic, etc. Connect them in series and build them into a plastic or aluminum box, properly secured and screwed down. Use heat shrink tubing instead of electrical tape for all connections, and use a grommet (those little plastic things where the power cord enters your kettle or toaster or whatever) to prevent the wires getting frayed.
And, most importantly, once you know the current the iPod consumes, multiply that number by two and buy a fuse with that rating. Put it in a holder in the battery box - that way, if the power cord to the iPod gets caught and damaged, or if the iPod fails catastrophically - there won't be a fire.
Fire and Meat. Yummy.
SIG: HUP
An inexpensive homebrew iPod battery sounds way cool! However, just to clarify something...
Actually, there ARE car chargers for the iPod, and they're only $20:l
http://www.xtrememac.com/foripod/car_charger.shtm
Apple even sells the newer model at The Apple Store.
the JoshMeister on Security
Here (in the netherlands) pretty much every supermarket or major chain shop has a battery recycling box. We have paper, glass, clothes, and even small chemical waste recycling points in all the cities, towns and many villages along with active campaigns to get people to drop things in the right box.
Maybe you live in interesting times
First lets get this clear, this is no troll.
I am European, I have been trogging around this continent and a few other for buisness and pleasure for many years. What is all this about batteries lining up or even having lots of batteries causing a security scare ? We have had terrorists of many flavours, IRA, ETA, Bader Maenhoff, UDP, PLO, Real IRA, Various commies, various faschists even the bloody animal lib chaps for years, we let them all on planes with bateries and sadfkgsdakfcsgdfk8ladf dsf9ryq +++NO CARRIER
Maybe you live in interesting times
I'm surprised no one pointed out that the cost of a 20 dollar car charger is not only cheaper than a box of playing cards and 4 batteries, but also nicer looking and just plain easier? I don't know, but it seems cutting the box open and reglueing it closed every time you need to replace the batteries (which, if they're not rechargable, cost additional money to replace, too), would be a real pain in the ass.
Cigarette Lighter Plug + Firewire Plug = Virtually Unlimited 12 to 15 Volt power. This hack would only be cool if you were on a deserted island with gilligan and the professor rigged it up so you could listen to your iPod. Even then it is still outclassed by the coconut radio.
However, 70 bucks seems kind of steep for that thing. I'm sure you could make one with all or most of its functions and that looked as good for a lot less.
$70 bucks is kinda steep? And $300-$500 bucks for a digital music player that has the same features of cheaper devices isn't? I don't know about you, but if someone can afford to dish out that kind of cash for a toy, then $70 bucks for a charger that looks nice and works well isn't too much to ask. Oh and if that doesn't justify it, how about supply and demand?
Nowhere did I say "Can't afford." Rather, my opinion is that the price is unjustifiably high for what you get. You could certainly argue that about the ipod itself, as you mention, and the high price of it is pretty much why I don't have one. I could afford one, but I don't see the ipod as offering sufficient extra bang for the large amount of extra bucks. A much cheaper player will meet all my needs, so I have no interest in an ipod, and won't until the price is much lower than it is now. And they get the battery situation worked out :-)
Actually, though, I really prefer players with no moving parts. I don't need 4 gig of storage on a player; a large CF more than meets my needs, and doesn't have the one fatal problem of anything that goes around: someday it will stop going around.
Supply and demand may allow for a $70 price (or not; time will tell if Belkin is at the wrong price point or not), but even that doesn't mean it's not steep. Anytime demand outstrips supply, that allows suppliers to reap windfall profits. Belkin might currently be the only people offering one of these. If six months from now ten other companies are making such a product, you'll see them selling for half what Belkin is currently asking, and still making a profit.
Therefore, yes I do think that 70 bucks is really steep for one of those and would either wait or try building my own rather than spend that much.
Why the hell wouldn't it be compatible with the iPod mini? Both come with a cable that goes from a 1394 port (like the one on his deck of cards) to the Dock connector on the bottom of the iPod. Even if he wired in the dock-cable to the battery pack, it would be compatible with the mini. The connectors are identical, as is every other connector on both devices (headphone jack and remote jack).
For any accessory, as long as it isn't mandatorily dependent on the physical dimensions of one device (i.e. cases, OEM iPod Docks) any product designed for the 3G iPod works for the Mini and so on.
Since this deck of cards, however, allows you to use your own 1394-1394 cable or 1394-Dock cable, it will work with any iPod ever made, along with any 1394 device in need of power.
PHB summary: to change battery type setting on some Palms you can do "shortcut dot seven". This should echo the new battery setting. Repeating will cycle through the options (alk, NiCd, NiMH I think).
There is no trap so deadly as the trap you set for yourself
-Raymond Chandler, The Long Goodbye
Although this is a novel idea, it is an engineering disaster. 9v batteries in series/parallel with AA batteries is VERY unsafe. A simple LM317 regulator with 4 9V batteries, 2 in series & 2 in parallel would be a novel external supply.
http://users.adelphia.net/~evansa/iPodCharger.html
I made one of these myself, it works great. It uses 8 AA's in series so it complies with everyone's recommended battery schemes.
The reason is that I don't know what I am going to want to be listening to two hours or four hours or six hours along. Your DIY project to carry 1000 disks so that you may choose what to listen to next will require a capacious golf bag at best.