Well as we all know these darn phones if used are never going to get great battery life...but what I always do is get an extra battery.....problem solved for whenever I use a ton of data, etc....here is what I bought...pretty good deal to me for OEM batt and stand alone charger...the stand alone charges the battery quicker also....but overall the batt life is pretty good to me..its just I use the crap out of my phones....
Here it is....
http://shop.sprint.com/NASApp/online...ubPageNumber=0
BTW is does say out of stock online...but they had a lot at my Sprint corp store....