That's a very broad question. Are you having any battery drain issues? Are you suspecting any apps in particular? If you're having battery drain issue, it'd be helpful to see screenshots of your battery stats. Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:
1. The main Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).
http://forums.androidcentral.com/am...ide-how-post-screenshots-android-central.html