What worked for me:@ random times throughout the day note your uptime above awake time,with % of waketime beneath both,then %of batt. life somewhere close. Monitor these values as well as the amount of usage, for as long as u like. Take note w/ and w/o task killers, auto task killer, or advanced,also try w/ & w/o booting. with this method u can determine how long your battery will will last on avg., per hr, day, week etc...I actually started doing this since i read this forum, to determine whether i had a defective device or if battery loss/use is acceptable. Well since i started my lil exp., i have not stopped. I have also quit smoking due to the time i take to monitor and note these values daily
I love this phone!!! ave time for me is about 52hrs u.t.,8:45hrs a.t. @ 9% after a full charge w/o reboot that took 2.5hrs. Right now im @ 161:45,11:30 a.t. @ 7% 2nd charge picking up @100hrs/8:45 a.t.,with 45% batt. remaining. formula to find values= T1-T2 divided by %of battery life lost gives you %lost/hr/day etc... Im sure you can figure out the rest from there, if not feel free to pm me...hope i can help someone out like the forum helped me come to my own method of monitoring my battery life/loss rate. Good luck