So I have the Mugen back, a Palm Touchstone back and the touchstone base. I still need to get the battery charge regulator so I can solder down to the battery contacts. In my testing I think I will be able to use this with a double Scud battery pack without cutting the battery case.

I have not yet measured any power at the gold contact points on the case but I also have been using an underpowered Nokia 5.7v 800mA charger rather than the Palm wall wart but I do hear pulsed buzzing from the base. I think the Palm USB charger gives 1000mA and something between 5.7v and 6v making compatibility with non palm chargers sketchy. It will not take standard USB power. I get no response at all with my N900 charger plugged into the touchstone base. From several forums it seams that the base does require shorted data cables before it will accept power. I am considering shorting pins 2 and 3 inside the base on the PCB but enough voltage is still a problem.


Some other notes is that the polarity is +Positive for the gold contact near the PALM name and X-ed out trash can on the sticker that holds down the coil and -Negative for the gold contact on the cover nearest the impression of the coil on that sticker.


I do not recommend disassembly of the base as there are some spidery wires to a small coil that are easily broken, though carefully cutting the USB port hole on the base open makes using alternate cables easier.

http://www.ifixit.com/Teardown/Palm-...Teardown/810/1

http://www.pocketables.com/2010/06/h...s-charger.html

http://forums.webosnation.com/webos-...tone-dock.html