[ltp] battery woes

[Christopher Sawtell]

On Sunday 16 October 2005 06:38, Wolf Wiegand wrote:
> Hi,
>
> since my R40's battery is basically dead (it only lasts a mery 5
> minutes), I'm in search for a new one. What I've found is this:
>
> http://www.akku.net/AKKUINFO/IBM%20ThinkPad%20R40%20Serie/1.10.IBM.2.180
>
> The site says that the battery has a capacity of 4000 mAh

That should _much_ more, at least an order of magnetude. Isuspect they simply 
made a mistake with typing the number.
Here are the battery details for my R40

chris@imogen ~ $ cat /proc/acpi/battery/BAT0/info
present:                 yes
design capacity:         57600 mWh
last full capacity:      37110 mWh
battery technology:      rechargeable
design voltage:          14400 mV
design capacity warning: 1855 mWh
design capacity low:     200 mWh
capacity granularity 1:  1 mWh
capacity granularity 2:  1 mWh
model number:            IBM-02K7054
serial number:             147
battery type:            LION
OEM info:                SANYO

chris@imogen ~ $ cat /proc/acpi/battery/BAT0/state
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            0 mW
remaining capacity:      36700 mWh
present voltage:         16647 mV

chris@imogen ~ $ cat /proc/acpi/battery/BAT0/alarm
alarm:                   1855 mWh

My R40 is about two and a half years old, but the ThinkPad battery has hardly 
been used. ( No more than 20 cycles )

> Since my 
> original battery has nothing written on it concerning the capacity, is
> 4000 mAh ok?
No, definitely not!

> A colleague told me that there are extra capacity batteries
Correct.

> Are those recommandable?
I do not know. Anybody?

> And, last question, what is a  
> good/recommendable shop in Germany to buy thinkpad batteries?
Ask IBM Germany. Doubtless they will be expensive, but you will get a good 
replacement battery from them. They are honest traders.

-- 
CS