Battery life has been great for me. I didn't need to use any battery "tips and tricks" or turn off nearly all the radios or anything. I take it off in the morning about 730am and with my normal use during the workday (rss feeds, some emailing, moderate texting, facebook) I don't need to put it back on the charger until I got to bed around 11pm and even then it still has at least 20% left. So for me, that's great. The thunderbolt was terrible. EVO was good at times and poor at others. It would say it has a lot to do with being mostly just vanilla android then having all the resource-sucking apps of manufacturers UI "enhancements". I don't feel worried at all throughout the day. After using an iPhone 4 for a long time, having to worry about the Thunderbolt's battery was a pain. No worries here. I took it off at 730 today and it's 1150 and I'm only down to 87%.