Broken battery protection circuit (was: Re: Battery driver problems?)

Tobias Diedrich ranma+openmoko at
Sun Jul 6 15:36:41 CEST 2008

Tobias Diedrich wrote:

> That didn't help.
> Looking at the battery circuit schematics I now think that the
> battery protection circuit on this battery is probably broken.
> Discharging is still possible (now at 2.8V at the terminals), but it
> does not accept any charge (I tried current-limited 4.2V/200mA at the
> battery terminals and there is (almost, a few uA) no current flow).

FWIW, I couldn't find the datasheet at the openmoko site, but this
is the overdischarge/overcharge protection circuit datasheet:

Tobias						PGP:

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