By Rebecca J. Hogue
Contrary to popular belief, leaving apps running on your iPad has very limited impact on your iPad’s (or iPhone’s) battery life. There are a few things you can do to maximize your battery life: (1) turn down the screen brightness, (2) close apps the use location services, (3) use airplane mode when you do not need cellular or wifi, (4) drain your battery once a month.
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The brighter your screen is, the more battery power is required. To save battery life, turn down the brightness to the minimum you need to see the device clearly. In iOS7, you can easily adjust screen brightness using the Control Center, by swiping up from the bottom on the screen.
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Location services are used by apps such as Google Maps. These are very convenient when you are using your device to navigate (e.g. as a GPS when doing house calls). However, location services drain the battery. You can tell when location services are being used by the location services icon (arrow) on the top right of the screen next to the battery indicator.
To maximize battery life, close any apps using location services immediately after using them. For example, after arriving at your destination, close the Google Maps app.
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If you know you will be in an area with limited cellular service, turning on airplane mode will prevent your device from constantly checking for service. This will significantly increase your device’s battery life; however, you will not be able to send or receive telephone calls with Airplane mode enabled.
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Apple recommends that you fully drain and recharge your devices once a month. This does not make the battery last longer, rather it re-calibrates the battery life indicator. This helps to keep the estimated batter life indicator more accurate.