On Wed, 20 Aug 2008 22:49:05 -0700, Michael Shiloh <[EMAIL PROTECTED]> wrote: > > > Joel Newkirk wrote: >> My guess is that it incorporates some constants that depend on the > actual >> battery pack. Note that I don't actually KNOW that it's in the battery, >> but previous ML posts by folks at Openmoko refer to it as 'in the > battery', >> and with a bl-5c installed almost all battery-related entries in sysfs > are >> unpopulated. > > This is to confirm that the coulomb counter is in the battery pack. Why? > Because it stores the count, and if you swap batteries, you need to know > the count for the battery in the device, not for the one you removed.
Makes perfect sense. Is it a custom IC, something off-the-shelf, or what? Could it be cheaply retrofitted by a hobbyist into a BL-5c clone battery? I'm quite happy to crack one open, just not my Openmoko battery... ;) Barring the workability of that idea, I'm hoping we can adapt the battery management/monitoring software to fallback to the 'dumb cellphone' approach and let us safely charge, and have some idea of remaining capacity of, non-Openmoko batteries if it detects a battery present without the coulomb counter circuit. j >> >> j >> >> On Thu, 21 Aug 2008 00:13:00 -0400, "Charles Pax" > <[EMAIL PROTECTED]> >> wrote: >>> On Wed, Aug 20, 2008 at 11:29 PM, <[EMAIL PROTECTED]> wrote: >>> >>>> OK, I have a few Nokia batteries laying around, BL-5c and BL-6c, and >>>> desktop chargers. They power the Freerunner fine, and seem to charge >>> when >>>> they're in the FR plugged in. But the Freerunner doesn't know what to >>> do >>>> with them apart from that, presumably since they lack the Openmoko >>> coulomb >>>> counter circuit. >>> >>> The coulomb counter circuitry is in the battery? Why isn't this on the >>> board >>> itself? >>> >>> -Charles >> >> >> _______________________________________________ >> Openmoko community mailing list >> community@lists.openmoko.org >> http://lists.openmoko.org/mailman/listinfo/community > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community