Help please. My Epic 4G Touch suddenly said my battery went from 94% last night to 0% within 10 minutes. I've tested and wall charged all my batteries, even re-flashed my ROM and still get the same reading on the phone. Shows 0% with a fully charged battery. Plugged in, it works, but if I unplug it, it shuts down immediately. I have work deadlines to meet and I'm a little frazzled. Am I screwed?? Thank you for any and all advice!