USB Portable Power Supply with 5000mAh capacity. Compatible with all smartphones and includes USB Cable. Whether you want a quick power boost or a full charge, made of lithium-ion polymer, the built-in battery has a charge capacity of 5,000mAh ; allowing up to 2 full charges of a smartphone. Charges batteries individually. Charge time 7 up to 12 hours. 5000mAh Li-Ion batteries . Batteries not included. Manufacturers 2 year guarantee.