Hey there! I have been searching the net for this particular problem I am having and sofar have found nothing, so I was hoping maybe you guys could help me out. My Thunderbolt after fully charging the battery will show at the highest about 60% battery life, if not lower. This morning for example it would only show 29%. I have bought 2 additional extended batteries for the phone, both will show around the same percent when fully charged. I have tried doing the whole battery calibration thing, with no success whatsoever. One time, after my phone died; I took the battery out of my phone and put it in my friends phone and it showed 82% remaining, yet my phone would say 0% and die. I've heard of a few other people having this problem and just warranting back the phone, but thats the problem. My warranty ran out a couple months ago. I do have the phone rooted, and yes i have tried charging with the phone off, and it showed the same results. At most the battery will last maybe 3 hours under use, 5-6 with light use. Any help would be most appreciated, thank you! Couple Edits: Yes I have tried 4 different charging cables. And no, its not its normal battery life.