I have had the capacitors installed for a few days now and they are still working well. I left the FR with a dead battery overnight and when I plugged it in in the following day, it had the correct time.
The digikey part number is: 728-1037-1-ND and the manufacturer's number (seiko) is: XH414H-II06E. I would recommend looking around on the site to see if you can find one with the correct bracket. Ben On 10/30/2010 03:03 AM, Dr. H. Nikolaus Schaller wrote: > Am 29.10.2010 um 19:05 schrieb Benjamin Deering: > > >> Hello, >> >> I finished installing capacitors as replacements for the dead backup >> batteries in my Freerunners today at lunch. They seem to be working, >> though I've only tried removing the main battery for under a minute so >> far. Someone on the GTA-02-core list said a 220uf capacitor would power >> the RTC for 2 minutes. If that is correct, the .07f caps I used should >> work for about 10 hours. >> > Please report some test results. > > >> The parts I got from digikey weren't an exact fit, but I was able to >> make them work. >> > Looks interesting. Do you have the exact order num...@digikey? > > >> Be sure to wear safety glasses if you try this, I had one of the old >> batteries explode when I was removing it. >> > Oops! So it was not really dead an had enough energy inside. Maybe, > just the voltage was too low to run the RTC? > > >> Pictures: http://jeepingben.homelinux.net/index.php?level=album&id=20 >> > Good work! > > Nikolaus > > _______________________________________________ > 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