Yup, there are actually a bunch of things you can do to make your battery last A LOT longer with iOS7:
Turn off "Background App Refresh"
This is turned "on" by default, and is located under "General" in Settings. What this does is constantly refresh app content when they're running in the background.
Turn off location tracking for apps.
Everything from Twitter to Google Maps is using location data and constantly checking to see where you are. This is a serious battery drain.
Turn of AirDrop when you're not using it.
Keep the brightness down (this one should be pretty obvious)
Spotlight. You know when that search box that you can use to look up things on your phone? That's constantly refreshing its data too. Sucking on your battery like a vamp. Turn it off when you don't need it.
