Ok, so, as with many of you out there I was having battery life issues on my new Rezound. I posted a thread, read, and posted to others on here as well. After trying various suggestions, including buying an extended battery, by others I gained very little, if any, ground on the battery life. So, as a last resort, I took the phone in to exchange it since other ppl were doing this and it seemed to solve most ppls issue. I went down to the Verizon store and told the guy my story. He asks, "How long is your battery lasting?" I told him a little more than 5 hours with the extended batt. down to 10%15%(moderate usage, screen on low). He said that was great!! And I told him, no it wasn't! So, at that point he suggested an app call "Juice Defender". I went ahead and downloaded it and tole him I would give it a try for a few days. Well, to my surprise, it seems to have worked... I got 6.5 hours down to 13% with heavy usage(LOTS of texts, couple phone calls, some internet/social medial action and screen display on automatic with) on my extended battery. There is a screenshot below. So for those of you experiencing fast battery drain, I would try giving this app a shot. Not saying it will work for you but its worth a shot! Good luck!!