1.A big battery killer is screen brightness. Make sure it is set at around half full and and have auto-brightness toggled.
2.Another is if you have an email account set up on your device. If you do, head over to the Settings application, tap on the Mail, Contacts, Calendars option and then look for Fetch New Data. Look under Fetch have it set to Hourly, or for extreme battery saving, click Manually. Personally, I have it on hourly, witch automatically checks if I have new mail every hour from the last check ( you can also check for mail manually by opening the mail app). Under Manually, the device will only check for mail if you open the application.
3.Push Notifications. To see which apps have this feature activated, go to settings, and then Notifications. Go through all of the apps in the list and only toggle the ones that are actually needed
4. The last daily step to increase battery life are the background apps. When you double press the home button, hold down a application icon until it starts wiggling and a red X appears in the corner of it. Close app the apps until it's empty.
5. The last step, which is very important, but only required every month or two, is the most time consuming. Calibrating the battery. To do so charge your iDevice (at night) until completely (100%) full. Allow it to remain plugged in two hours after 100% (although you can use it or not). After that, unplug the device and use it normally the whole day so by the time you reach a stable charging location, your device dies from low battery. Leave it of for a little and then plug it in and don't unplug it until it is a full 100% again.