Here's how you can download the Battery Saver app free for your iPad, iPhone, iPad mini or iPod Touch.
1. Go to the Battery Saver app preview page in iTunes (or tap the link on your iOS device to install the app directly).
2. Click the View in iTunes button.
3. Click the Free button to download the app.
4. Sync your iPad, iPhone, iPod Touch or iPad mini with iTunes to install the app.
Battery Saver can help double the battery life of your iOS device. You can use it to disable automatic time zones, estimate the amount of time you have left on your device's battery, notify you when you need to cycle your battery, and show how much of your battery life individual apps are consuming.