MOTOROLA Power Pack slim 5100 mAh Portable battery for Smartphones and Tablets With a whopping 5100mAh battery, you can fully recharge a smartphone and still have power leftover for a tablet. 2.4 amps of output allows for blazing fast charging. Use the built-in micro USB cable and USB port to charge two devices at once. Ultra slim design lets you slip it into your pocket and take it anywhere. The natural canvas casing is built to withstand the daily grind. Motorola Power Packs are compatible with Android and iOS USB-powered devices.