just so you guys know, sprint came out with this phone a few weeks ago. it is the same phone as the eris. its called the hero. I'm sure there are a few of you that already know this...but i'm trying to help the folks that dont know. Now with that being said: Surf the sprint htc hero forums and you'll get some insight as to why the batter may not be lasting, which programs cause issues, info on updates, and where to get an extended battery from. how this helps some of you. and just to let you know, task killer caused my baterry to run down quicker. when i deleted it and reset the phone...all was good...i get a little more than a days use out of it.