Laszlo KREKACS wrote: > On Wed, Jun 10, 2009 at 11:04 PM, Christian > Gagneraud<[email protected]> wrote: >> 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 dont think it is true. Openmoko's battery is "special", it includes a > coulumb > counter. And the battery indicator relies on it. > So inserting a nokia BL-5C battery is not complete solution. (because it lacks > the coulomb counter), and freerunner cant charge it (currently) and cant > display the remaining capacity. > > The best person to ask are jOERG or Werner. They usually hangs on > #openmoko-cdevel and are very helpful people. > > >> The FR is designed/programmed to charge at 500mA max. It should be > > It is not true either. > > 1. Freerunner identifies the charger with a "magic" 47kOhm resistance > between D+ and D- line. > If the resistance is present it charges with 1000mA. > > 2. If the usb enumeration was successful it charges with 500mA (so > connecting to a computer charges with 500mA). > > 3. If none of the above happens, it defaults to 100mA.
Hi Laszlo, You right, i was not sure if it was 500mA or 1A max. that's why i did enclose my comments in between "not-really-sure" tags. Anyway, 1A being the best-case charging current, it will still take longer to charge a 2100mAh battery than a 1200mAh. (roughly 2 times longer i guess) Chris > > Laszlo > > _______________________________________________ > 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
