Any update on this? What did you end up having to do? My HTC Evo used to do this alot but after taking the battery out and letting the device and battery cool, it would charge and boot up just fine. But its been about a half hour here trying with my Epic 4g Touch after letting the battery cool for 10 minutes, and i can't tell if it's charging or what.
Edit: At first the led would blink blue, and between the led being on, the screen would blink a picture of a battery with a circle in the middle. Now nothing.
Edit: I just reseated my battery again and it appears to be charging fine, same battery same charger. Goodluck!
Edit: Okay, when I last edited I thought because the phone turned on things were fine, but at that point it said it was charging (1%) and here a half hour later it now says charging (0%)... Okay now the phone just turned itself off, but i do see the normal charging screen and red LED.
Edit: All good. Just needed to charge with the phone was off at that point.