I got my 2750 with the phone and it does last longer...duh. Try this and let me know what happens. Pull it put it back and let the phone reboot. Let me know if the batt% drops significantly after you put it back in. I have been testing this and it's bugging me pretty badly right now. Was getting great life out of it today and then pulled the batt. Before the pull it was at about 45% after I put it back in and rebooted it was at 21%. Now...either the boot sequence killed over 20% of the battery or the OS is not properly reporting the life.