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Toshiba Battery Charges In 10 Minutes
Slatterz writes "Toshiba has unveiled a battery prototype that offers a 90 percent charge capacity in just 10 minutes. The Super Charge Ion Battery (SCIB) is capable of handling 5,000 to 6,000 recharge cycles, compared to the typical 500 offered by standard lithium-ion batteries. The new battery is composed of a durable material that offers a high level of thermal stability and prevents overheating."
Is the InfoWorld article this seems to have come from:
Right here
This is being shown in a laptop, and will be in a Schwinn bicycle next year.
This sounds good, certainly, but I'm *really* hoping eeStor's superduperultracapacitor technology works out as advertised. That will change the world.
Will this battery explode or just burst into flames?
Well, the stats itself sound pretty much like A123 or similar cells: Lithium with an ironphosphate instead of cobalt anode material.
They have higher cycle times, and they can be charged at up to 5C without much problems (which would agree with the 10 min stated).
But they have a drawback: Only about half the energy density compared to normal Lithium Ions.
Not to mention that in order to really charge them that fast, you will need a much higher rated, and thus bigger/heavier PSU brick for the notebook...
HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
The signature is a forgery.
Fuck systemd. Fuck Redhat. Fuck Soylent, too. Wait, scratch the last one.
Yes, there is:
Typically, the last few % take a as long as everything before together. Its just that the nature of the chemical reactions involved: During the charge, the battery voltage increases. The charger OTOH cannot push more than 4.2V (for normal batteries) respectively 3.7V for LiFePo4, in order not to damage the cells. This means that effective voltage drops during the charge, and duringe the last bits of capacity, there are only some 0.1V left. Add internal resistance, and its clear why it cannot fill up completely fast
Other comments suggested downrating, but that doesnt really make sense: as long as you leave it in the charger, it will gain charge for a while, so the real capacity is truely higher.
HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
If you think of a battery as a bucket where the battery charge is indicated by the amount of water in the bucket.
Now imagine that you are trying to fill that bucket as fast as possible, which means using a firehose, and that spilling any water means damaging the bucket.
Getting the bucket close to full without making a mess is a lot easier than getting it 100% full which means you need to slow the fill down to trickle to make sure you don't over flow or splash water everywhere.
Charging the last 10% of battery capacity is difficult because the battery does not readily accept a charge as it's nearly full. This means to get the last 10% of capacity you need to slow down the charge rate, which means that in this case, it may only take 10 minutes to get to 90% full, but it may take another 30-60 minutes to charge up that last 10% without damaging the battery.
Story about battery tech + 7 ... compared to standard ..." + 4
InfoWorld + 5
"prototype" + 10
" in just " + 15
"Super" + 3
A new acronym + 6
"capable of
Total - 50.
It stinks, but who knows - it may just be a fine cheese or chocolate.
On the other hand, the Vaporware Meter is off the charts, and the "durable material" and it's claims broke the poor Economic Feasibility Meter.
Comparing to the number of cycles for a lithium ion battery doesn't make sense as lion batteries don't primarily degrade from cycling. Unlike some other battery technology, there is a major difference between the battery life when you cycle a lithium ion battery 100 times repetitively, and cycle it 100 times keeping it at 100% for a month between cycles. While the first would have degraded some, the latter could have degraded enough to be mostly dead.
How could any geek not want a battery like that?
Is it just my observation, or are there way too many stupid people in the world?
How about, "This flashlight charges to full in 10 minutes. If you leave it plugged in for another two hours, you get an extra 10% 'superboost' charge!"
This is marketing language we're talking about, after all.
You're special forces then? That's great! I just love your olympics!
It's based a long-standing rule of project cycles, known as the 90/90 rule: the first 90% of the project takes 90% of the time, and the last 10% of the project takes the other 90% of the time. Or at least that's how most software projects seem to end up... :-)
And you won't need one.
Let's use Australian numbers (because I know them):
Available voltage from a standard wall outlet: 240v
Available amps: 10
Using Ohms law (and assuming resistance will remain roughly the same), I should be able to get nearly 100A @ 24v using a step-down transformer. Most laptops have an input of around 19v. As long as the leads can handle the amperage, it shouldn't be an issue.
It's the leads that will be an issue. IIRC, cars need 50-80A @ 12v to start. The leads that come off the battery for the starter motor are pretty big, and they only need to handle that current draw for up to 10 seconds...
I just spat Newcastle all over my keyboard reading this post. Luckily it still appears to be work
Keyboard, shmeboard...won't somebody think of the Newcastle!?! Let's all have a moment of silence for a nice brown ale gone to waste.
Actually it's quite a bit more than that in a car. You'll see a good 3-500 amps and more depending on engine size, age, temperature and other starting conditions.
In fact, batteries are rated in cold-cranking-amps - i.e. the number of amps they can supply to start the car while cold (probably around freezing, not sure of the exact temp measured at). A hefty battery is rated somewhere around 8-900 CCA.
You're right though - the wiring only needs to support that load for ~10 seconds in a worst-case situation so the conductors don't have to be as heavy as they would otherwise.
You can get rich if you own a politician, but you have to be rich to buy one in the first place.
First, that's 500 *full* cycles. Most people don't completely drain Lithium Ion batteries before recharging them.
Second, that's not 500 cycles until the battery dies, it's 500 cycles before the battery only holds a certain percentage — usually 80% — of it's initial charge.
What also kills Lithium Ion batteries is internal oxidation, which occurs whether the battery is cycled or not. Storing a battery at 100% charge actually causes the battery to lose life as much as five times faster than if the battery was at 50% charge. In other words, if your devices spend most of their time at less than full charge, your batteries will last longer than if you let them sit on the charger for years on end.
Speaking of which, I wish all notebooks, MP3 players, and other gadgets gave you the ability to set a charging limit. I've only seen the feature on some Sony notebooks (they call it a "battery care" utility). If you could limit your devices to, say, a 40% charge when they're just going to be sitting around the house all day, and only charge them up to full when you really need the battery life, you'd probably never need to replace a Lithium Ion battery again.
How can I believe you when you tell me what I don't want to hear?
The wire gauge needed for some application is determined by current; voltage only matters to the extent that the insulator around the wire needs to be thick enough to avoid dielectric breakdown. A power cord that carries 30A at 240V uses the same wire gauge (10 ga., IIRC) as one that carries 30A at 120V, but the thicker insulation on the 240V cord makes it a bit larger. 100A through some 24-ga. hookup wire will burn out just as fast at 1V as it will at 100V or 10kV; the higher voltages might make for bigger sparks when the wire finally melts, but the resistive heating of the wire is proportional to the square of the current.
20 January 2017: the End of an Error.