[ltp] Re: Thinkpad battery exhausted in less than a year?

[Juergen Stuber]

Hi Brian,

Brian Nelson <nelson@bignachos.com> writes:
>
> I kept my last laptop (a Toshiba) plugged in on AC and left on nearly
> 24/7 and the battery could no longer hold any charge at all when the
> laptop was only about 1.5 years old.

my T30 is now 17 months old and has been on almost continuously:

% cat /proc/acpi/battery/BAT0/{info,state}
present:                 yes
design capacity:         47520 mWh
last full capacity:      35930 mWh
battery technology:      rechargeable
design voltage:          10800 mV
design capacity warning: 1796 mWh
design capacity low:     200 mWh
capacity granularity 1:  1 mWh
capacity granularity 2:  1 mWh
model number:            49 42 4D 2D 30 32 4B 37 30 37 32 00 00 00 00 00
serial number:           20 20 32 30 37 00
battery type:            4C 49 4F 4E 00
OEM info:                53 41 4E 59 4F 00 30 32 00 00 00 00 00 00 00 00
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            0 mW
remaining capacity:      35260 mWh
present voltage:         12506 mV

That's about 75% remaining capacity.
I think there were about 100 charge cycles, can't check under Linux.

The T30 is also quite well-designed w.r.t. battery location,
it is in the coolest corner far away from the CPU
at about ambient temperature.


Jürgen

-- 
Jürgen Stuber <juergen@jstuber.net>
http://www.jstuber.net/
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