How to reset the battery capacity?

I'm the owner of a thinkpad x61 with a 8 cell battery. The design capacity is 74,88 Wh and now the full charge capacity is 60,81 Wh, it's normal?? I bought the computer in December 2007. After a complete charge, I only can use the computer about 3 - 4 hours......... Thanks

 

So you lost approx 18.8% capacity in 20 months , so nearly 10% a year, I normaly say you should not lose more than 10% capacity in the first year, so you are pretty close.

If you have an extended warranty you could see if they will give you a new battery but this is not a dead cert.

How many charge cycles have you had, did you hammer the battery.

But once the capacity is gone, you cannot get it back.

 

Batteries are not generally covered under upgraded warranties. The batteries themselves have a 1year warranty.

 

The battery has 250 cycles counts... and I didn't hammer it. The manufacturer is SONY. Which are the causes of the loss of capacity??

 

If you want some information on lin-ion batterys see the link below.

http://batteryuniversity.com/partone-5.htm

http://batteryuniversity.com/parttwo-34.htm

 

He meant hammer as in putting a lot of cycles on it.

 

After read this article, I have one question........ when the battery is storage?? I always use the battery and I can't place in a cold site.... And I should buy a new one, no?

 

I would just use the battery as you have been doing, I would not worry about keeping it cool and at certain charge levels, you will only save 10% max, it`s just not worth it.

When it dies, buy a new battery or a new notebook.

 

Thanks so much