Gomeir 13000 mAh Dual Port Universal Power Bank - Black 13000mAh Power Bank- It is a external battery that you could use every day for your iPhone, iPad, etc. Compact design easy to hold in your hand and put anywhere your want, e.g. a pocket or bag Ultra-high density reliable A++++ Lithium-Ion battery cell with security protection design. This portable battery pack will automatic shutdown if a short circuit or overload output occurred while unit is charging Huge capacity- with 13000mAh capacity this battery pack can charge iPhone 5/5S 8 times, Samsung Galaxy S5 4 times, Galaxy Note III nearly 3 times, iPad more than one time Super fast dual USB charge output (5V / 3.1A total) through two USB ports (5V / 2.1A and 5V / 1A) can charge two smartphones simultaneously or an iPad and iPhone Strong Compatibility - Gomeir Smart Battery Charger is compatible with most of the smart phones MP3,MP4, etc and 5V tablets in the market