1. Disable background refresh
iOS 7 lets some apps refresh even if you are not using them.This is nice somehow but also a big problem as it sucks the battery out!.
Disabling Background Refresh entirely would be your best bet, but you can also turn it off for only some apps.
2. Turn off you location services
Location services also is a big problem for battery. Just turn it of for the applications that you don’t need. Maybe leave it for Maps and other apps that really needs your location.
3. Disable AirDrop (available only on some models only)
4. Reduce Motion (that fancy 3d parallax effect is turned off)