Here are a few tips for maximizing the battery run time on your iPad and iPhone. Keep these devices out of the sun, a hot car or any other extremely hot environment. Heat significantly degrades your battery's performance. Always make sure your iPhone has the latest software from Apple, as engineers are always developing new techniques for optimizing battery performance. Other suggestions include reducing the screen's brightness, making sure the screen locks quickly, reducing or eliminating mail and calendar checking, reducing or eliminating push notification and disabling location services if you find them unnecessary. Apple has more suggestions on how to maximize the battery life on an iPad and iPhone by clicking here.