I work 12-15 hours and make about 30 mins of phone calls a day I keep my data connection turned off and have push e-mail disabled beam receive all is turned off and don't use BT at all and at the end of the day I'm still at about 40-50 % I guess iv just gotten used to making my batt last and now turn things off by default I also am a freak about stopping all running progs and keep backlights turned down as low as possible hope some of this helps those who are having battery vampires attack them