FR ca nalso charge at 1A (with wall charger) On Wed, Jun 10, 2009 at 11:04 PM, Christian Gagneraud<[email protected]> wrote: > Risto H. Kurppa wrote: >> On Wed, Jun 10, 2009 at 9:56 PM, Christoph Pulster<[email protected]> >> wrote: >>> Openmoko, please can you release relevant infos or chips, so we can >>> built high-power batteries ? >> >> +1 > > According to the schematics of the FR, the ID line of the battery is > not connected to anything (R1769 is marked NC). I checked my FR rev A6 > (from your shop Christoph!;)), and this resistor is not populated. > So it means the ID line of the battery is definitely not used. > > Now I'm not saying it is safe to use whatever battery, i'm just saying > that the power management chip (the PCF 50633) is not able to read any > information out of the battery you fit in your FR (like battery ID, > serial number, etc...). > > I would say that as long as you use a 3.7V single-cell Li-ion battery > that has built-in protection, it should be safe to test with your FR. > The only drawback you'll get is a longer charging time. > <not-really-sure> > The FR is designed/programmed to charge at 500mA max. It should be > possible to change the charging rate in software (u-boot and/or > kernel), or perhaps by doing some HW mods. > </not-really-sure> > > I'm not a battery expert, complementary information welcome! > > According to the FR battery page [1], they say that FR use a smart > battery (model number CT-GTA02 [2]) but i can tell you that i don't > have such a thing in my phone, i actually have a battery marked > "Model: GTA02", which is definitely not a smart battery (it has only 3 > pins), this battery correspond more to what's describe on the Neo > battery page [3]. Moreover, the schematics of the FR show that it use > only 2 signals of the battery: V+ and V-. > > Chris > > [1] http://wiki.openmoko.org/wiki/Neo_FreeRunner_Battery > [2] http://people.openmoko.org/tony_tu/GTA02/hardware/GTA02/CT-GTA02.pdf > [2] http://wiki.openmoko.org/wiki/Neo1973_Battery > > > > >> >> r >> >> > > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community >
_______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
