Check These Settings First:
The average battery life for most iPads is 10 hours. If your iPad loses its charge much sooner than this, please check the battery usage settings. Then, delete or close out of any apps that are using a significant amount of battery.
Certain apps will sometimes be active in the background, especially those that check for device location or stream content. App refresh behavior can be turned off globally, or by app in order to preserve battery life.
Sometimes apps require the use of your current location for accuracy. This service uses both Bluetooth and Wi-Fi, which can drain the battery if not needed. Check the Location Services settings to either turn them off globally, or by app. Also, check the System Services section for advanced settings.
