Power8tor Z52 Portable Charger 6000mAh Dual-Output External Battery Power Bank (Green) Excellent quality with a 18-month hassle free warranty Powerful and rechargeable 6000 mAh lithium ion battery, enough to charge most smartphones 1-2 times Dual output to charge 2 devices at the same time Faster recharge with input and output of 2A Compatible with iPad, iPhone, Nexus, Samsung, Motorola, Nokia, HTC and LG