I just ran my phone from 100% to the point where it shut itself down so basically to minimal possible charge. My numbers just prior to shut down were approximately: Up Time: 46:00 Awake Time: 5:40 These numbers were all during intense use with a mixture of 3G mostly and a bit of wifi. I spent this entire charge web surfing and downloading and installing apps. I also used the music player for about 30 minutes. This seems like excellent battery life to me. Realistically if I were using my phone in a more normal way I would be able to last easily for an entire day without any worries, probably more. Just wanted to get the perspective of other EVO owners on my battery life, I'm very pleased with it.