The best thing for your battery is when you first get it is till kill whatever charge it has on there, that way when you charge it, it will give it a full and fresh charge cycle. I did that, and still let it get to just bout 3% and then put it on that charger. After a few weeks of doing that you will easily get 13-17 hour battery life on a single charge.
Some other tips for better battery management:
1- Turn off haptic feedback (Menu>Settings>Sounds>then uncheck Vibrate Feedback)
2- Don't constantly turn your screen on and off to see if you got any notifications, thats what the notification light is for
3- Its ok to leave your GPS on, its only used when a specific application needs it, you'll waste more battery turning it on and off all the time.
4- Use Wifi whenever possible, but only when you're in a wifi network, otherwise you'll do more damage than good.
5- Social Widgets are your enemy! You're going to end up clicking to the app anyways and its not worth them constantly refreshing.
Hope this can help some people.