[OLPC-devel] Battery Charge End Sensing

Frieder Ferlemann frieder.ferlemann at web.de
Wed Jul 12 07:07:05 EDT 2006


Hi,

Ray.Tseng at quantatw.com schrieb:
> 	Ambient temperature is considered.
> 	Quanta is working with battery cell company to implement the charge/discharge algorithm.

Battery charging on OLPC might have some unusual challenges
(Ambient temperature (and its gradient), unstable/underdimensioned power supplies)

Any more hardware details available? Schematic / block diagram /
product requirements document (PRD)?


How would the software interface to the charging circuit look like?
Specifically: Does it allow to pass an array which holds the
maximum permitted current over the external power supply voltage?

So that (a classroom of(!)) OLPC could be configured to have a friendly
load characteristics for (different types of) power supplies
(see also http://wiki.laptop.org/go/Battery_and_power )

Greetings,
Frieder



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