GTA01 Battery loader problem

Cesar Eduardo Barros cesarb at
Sat Jan 31 22:34:55 CET 2009

Matthias Barmeier escreveu:
> Chris Syntichakis schrieb:
>> Hi,
>> How long do you have this battery?
>> Maybe its lost the capacity...
>> I think you could dis-charge it completely (maybe using an external battery
>> dis-charger) and then recharge again (on the openmoko, a bit tricky , eh?)
> I will try.


Discharging the battery "completely" will make its protection circuit 
cut off, making it much harder to restore (LiIon batteries are not 
supposed to be discharged too much, it damages them). In fact, that is 
probably precisely what happened: the GTA01 did not switch to the 
correct charging mode (because it needs to be able to power on to do 
so), and discharged the battery too much.

The way to recover from it on GTA01 is to "jump-start" the battery 
(since the GTA01 cannot boot only on USB power, which would allow 
enabling the charger), which is not a recommended thing to do (and might 
in fact be dangerous).

Cesar Eduardo Barros
cesarb at
cesar.barros at

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