[ltp] battery and capacity loss

[Tino Keitel]

On Thu, Aug 07, 2008 at 11:39:12 +0200, Riccardo Paterna wrote:
> Hi to all,
> 
> i have an ibm x60 with the latest bios (2.17) I bought it on december
> 2007 and my battery lose a lot of his capacity with acpitool -B i have
> this output :
> 
> Remaining capacity : 18590 mWh, 100.0%
>     Design capacity    : 37440 mWh
>     Last full capacity : 18590 mWh, 49.65% of design capacity
>     Capacity loss      : 50.35%
>     Present rate       : 0 mW
>     Charging state     : charged
>     Battery type       : rechargeable, LION
>     Model number       : 93P5028
>     Serial number      :  3383
> 
> I think that capacity loss is to high for less than one year ...
> some one can give me some suggestion please?
> Do i have to do warranty for the battery?

You could use tp-smapi kernel module to read some extended information
from the battery, like the number of charge cycles. AFAIK the number of
charge cycles has big impact on the full capacity.

Regards,
Tino