Have a look at this thread, the link there offers many tips on saving your battery life......I'm sure you'll find it interesting reading. http://www.ipadforums.net/ios-7/114204-how-save-battery-life-ios-7-complete-guide.html
Thank you for posting my thread here!
And yes, he will find it very interesting reading! (Still it's a better story than Twilight) JK
Hope it works for you buddy, as for me they've worked great so far! and I am happy.
Klevis, IT Engineering, Tirana, AL
If your device was upgraded to iOS 7 rather than restored, I'd recommend backing up your device and restoring it before following the guide as just this simple procedure alone added on top of the tips listed in @leelai's post by @TheSagittarious has resolved many issues including some battery draining issues.