Picked up the phone yesterday. let it charge all day at work. And after heavy usage from 5-midnight, standby from midnight to 8 and light usage this morning, I still have 25% battery... after 17 hours, 7 of which I literally did not put the thing down. I'd say that's pretty damn good for a super phone. I know my Evo lost 15% battery on the 30min drive to work. If I unplugged it in the morning it was dead before I went to sleep. Pretty much the reason I returned it, It's not a 4G phone if 4G sucks so much juice you have to leave 4G turned off all the time.