A battery chemistry widely used in many modern electronic devices, characterized by high energy and power density.

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2answers
4k views

How long do Lithium Ion batteries normally last?

On the laptop I have, I've had to buy a new Li-Ion batter roughly every year. I do use this computer quite a lot, but I'm wondering if this is normal. Right now, my battery is completely dead (it ...
8
votes
3answers
916 views

How to rebuild a Li Ion laptop battery?

I have an aging Gateway NX560XL laptop. The battery is toast and a new one, even aftermarket, starts at $130. So, to experiment, I began tearing apart the old battery to see what can be done. I ...
3
votes
1answer
2k views

Does freezing a Li-ion battery have any effect on its ability to hold charge?

Ok. I've heard this rumor at least 100 times. I can't find any information to substantiate it or any serious research done it. Is it a total rumor, or is there truth to it? Has there ever seen a study ...
2
votes
1answer
332 views

Laptop battery liftime from Dell specs?

Question: When I buy a Dell Laptop, I get the following choice for battery: (Lithium-Ion main battery with X cells and Y Wh [included in price/at additional $] Lithium-Ionen-Hauptakku mit 4 Zellen ...
1
vote
2answers
120 views

How does one guarantee that the Lithium Ion Battery hasn't sat on a shelf for a long time?

Lithium Ion batteries being the milk of batteries that they are; I was wondering if there is any way of obtaining a guaranteed fresh carton of power with an expiration date so one can tell if they are ...
1
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0answers
61 views

Battery life up to 8 hours for 4-cell and 8-cell? [closed]

I would like to buy a thinkpad yoga, but I am not sure how to estimate the battery life since each website post different type of batteries for the thinkpad yoga and all of them say the battery life ...
0
votes
1answer
474 views

How to initialize a lithium-ion battery?

I just bought a lithium-ion battery for a Lenovo ThinkPad T61, and frustratingly it displays being able to charge only at 91% of its design capacity (65.16 Wh out of the designed 71.28 Wh). ...
0
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2answers
175 views

Is it safe to leave a Li-ion battery for weeks unplugged while it's not fully discharged ? And is it safe to unplug it while the PC is on?

Is it safe to unplug a li-ion battery not-discharged and leave it unplugged for a considerable period of time? (Less than a month) Is it safe to unplug the battery while the PC is on and directly ...
0
votes
1answer
486 views

Prolonging Lithium-ion battery life: what should I do? [duplicate]

There are many suggestions about lithium ion battery: Prevent over-discharging. Cell reversal can cause an electrical short. It is good for the battery to be completely discharged every so often, ...