I plugged my RM into my car charger and inadvertently left it plugged in for about 12 hours. When I unplugged it, it displayed 100% charge and I used at as usual. Messages came through, I sent some emails, made a couple of phone calls, etc.
About an hour later, I picked it up again to make a phone call, and it showed that the battery was at zero! I immediately plugged it into the wall charger and let it sit for about an hour, but when I checked it, it was still at zero. I had had something similar happen with a previous android phone, and I had made a 'factory cable' and brought it back to life. I went ahead and altered one of the wall chargers that came with this phone, and opened up the back and hooked it up. I let it charge for about 2 hours, but when I picked it up to see how it was doing, the battery was warm, but it was stuck at the Motorola logo. I tried the volume down/power, volume up/down/power and tried to go to recovery, but when I selected recovery, it jumped back to the logo. I tried BP tools, same thing, jumps right back to the logo. I disconnected the cable, and plugged in the regular wall charger and tried again, but the same thing. I was unable to get back to the battery charging screen. Then I went back out to the car and plugged it in there. I reset and tried to start it in safe mode. It started up, and I got to my home page for about 3 seconds, then poof! back to the Motorola logo. I seems that it is 'intact' and yet I can't get it to stay on or stay charged, at least with what I have tried so far.
I just put it back on the stripped down cable and I guess I will let it sit overnight and see what happens. In the meantime, I'm hoping someone might have some suggestions just in case it doesn't charge. I don't really know too much about the repair/boot options available on the Android other than recovery / clear cache... so if there's something there that would be helpful, I'm all ears. Thanks!