Macally MEGAPOWER52, 5200mAh Portable Travel Battery Charger for iPhone, iPod, iPad, Android, Tablets and Smartphones - Black/Red

The best way to stay charged up when on the go. This large capacity battery is exactly what you need for charging your smartphone or tablet when you run out of power. Small and lightweight design makes it easy to take wherever you go and conveniently charge your devices. Compatibility: iPhone 5S/5, iPhone 4S/4, iPhone 3GS/3G, iPhone iPad Air, iPad mini with Retina display, iPad mini, and etc. Samsung S5, Samsung S4, Samsung S3, and etc. Galaxy Tab 4, Galaxy Tab 3, and etc. HTC One (M8), HTC One (M7), and etc. Most USB powered devices

Built in 5200mAh rechargeable lithium ion battery LED display to indicate exact battery level percentage Auto turn on to charge and auto shut off to save battery life 2.1 max output, quickly and fully charges all iPhone models twice