After seeing this thread (and various others) a while back, i started taking random shots of my batter life to compare, though i've done them over a couple months, so can't remember extra configs each time, but i know roughly.
All on a 8 month old 3G 16gb.
As i work abroad 4 days a week, i mostly have location services off, data off, i never have 3G turned on (cant use it abroad and the signal is weak to non-existent where i live in the UK), i don't use it for calls much (as again, calls from abroad are extortionate & work landline is free) so i TXT alot instead, infact i try to keep calls short, sweet & to the point! I'm no a phone chatter

Never have push on (no need) and brightness is always on 50%, auto bright on, auto lock 5 mins (which i rarely leave to anyway). I never turn the phone off at night (use the alarm every day) and only turn it off for take-offs & landings.
SO..
This one would have been traveling from work to home.
B/T = off untill i got home the next day, needed for the car
Wifi = mostly off
Briefly checking mail & app store before i leave work, about 4/5 hours of iPod use, with a few games of Harbour master and paper toss, txting, some video podcasts, a couple of short calls.
This one was from a w/end at work, had to work over, but didn't use wifi much, quite a bit of iPod, ALOT of TXTing, tbh the thing was lit up most of the evening/ Checking the app store, some surfing etc. No video. No calls. This was the w/end before the short above.
The last 3 are just average weeks at work & travel. I'll charge the phone before i leave Sunday @ 4pm and will re-charge regardless of where it's at (hence why the bar is still green in some) on Wednesday evening, circa 10pm.
Settings/ use just similar to the previous.
about a month later..
tbh i'm very happy with my battery, i've not yet been in the situation where i've been desperate for power, does me fine. I find myself really only needing to charge twice a week, which is no worse than my old simple nokias.
I will say i do drain it heavily at the weekends, where i will have Wifi, location, B/T etc on all the time, when the B/T is connected in the car that drains it bad, and now i've got apps like CoPilot, i can easily drain the battery out in a day or so, so i know it's not perfect, lol
