I am using the Extended battery from Verizon in my Rezound. Seems to give my pretty good battery life most of the time. On occasion I will let the phone on all night and when I wake the phone will not wake up. It is like the battery is dead. Have had this happen about 10 times in the last 2 months. I use the on/off button to wake the phone or to start it. Does not respond either way. Last nite I left the phone on and when I laid it down I had just checked and there was like 95% battery life left. Now about 12 hrs later, with no other use of the phone I go to wake it up and it will not work. Had to take out the extended battery and put the stock battery in to get the phone to turn on. I have left the phone on over night with the extended battery and have not had this happen every time. Just only occasionally does it happen. Using Easy Battery battery saver and it seems to work well for me. Checked the settings and they are all as I had originally set them. What do you folks think? Bad battery or bad phone or what? Thanks in advance for any help or suggestions you can give.