The new iPad claims 10 hours of battery life and does a good job of delivering, but the long charging time means that some users end up leaving the airport or hotel without a full charge.hange the iPad’s screen brightness to save battery life. Tap Settings then Brightness & Wallpaper to reduce the screen brightness and also Turn Auto-Brightness Off. Overall keeping a handle on the screen brightness is the best way to have a longer battery life on the iPad.