Deep Discharge et al.

Nick Guenther kousue at gmail.com
Wed Dec 19 17:20:16 CET 2007


http://wiki.openmoko.org/wiki/Neo1973_Battery_Charger#Neo1973_emergency_charging
is unclear about how the battery management works exactly.
"NOTE: Please do not press the power button before you have waited for
something like four hours. If you do so, the phone might [partially]
power up, and draw more power than the 100mA supplied by the
charger/USB, and so begin discharging itself again."
Indeed, sometimes I've left my neo turned off and plugged in for a few
hours, then I will turn it on and see that it claims 50% charge, and
then, even while still plugged in, it will discharge itself and go
flat. Other times I've left it charging for longer and then have
plugged it in and then it charges to full.
So my question is: is there a minimum level of battery charge needed
in order to support fast-charge?

The times it's gone flat on me I may only have been charging from
100mA. I'm not sure.

-Nick



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