I decided to apply the software update that I kept getting prompts for. Prior to the update, it seemed that the screen and the media server were the two biggest items that were eating up the battery, but I was getting maybe 6-7 hours of usage before the battery was running low. Now that I've applied the update, the Android System has been using the battery. This was the same problem I had with the Epic, and I could only get 4 hours of battery use before the battery had to be recharged.