Thx guys, I was getting 10%-20% drop every hour without really using much, topped at around 8 hours max.
I brought the phone back to the store and showed the guy with the battery stats of 4 hours to be fully discharged.
He swapped the battery and I put juice defender + 4g off + screen 10%. With light (couple phone calls, maps, navi, weather, browse like 10-15min game) I was able to pull 25 hours.
I did the light use on purpose to test out how much it could last in max.
The next day, I did heavy use with navi (about 2-3 hours navi) and the battery became around 15% in like 8 hours. then it lasted another 8 hours just with the last juice without really using alot.
This seems acceptable now, and i am happy I swapped the battery.
Now, I am back to my ordinary life style, sync few messengers, 3 gmails, etc, 4g off (wifi on at work), now 5hours passed and still 80%, with voice call of 30min!!
I guess I will pass extended battery (im a thin guy and don't like baggy pants, phone with case is already kinda big for my pocket, and i ordered 3 cases for the standard battery already lol)
15-25 hours with moderate use sounds decent especially when i have rapid car charger, and regular charger along with my laptop in the city all the time.
waiting for Unl3ash3d 1.3x, it would be awesome with 1% battery stats. I heard there were battery life drop from 1.1 to 1.2, anyone experienced this?