Portable USB charger for smartphones, computer tablets, e-readers and other similar USB devices. Powered by NiMH batteries which extends viewing time when an electrical outlet is not available. USB hub with two line "out" ports which can be used to charge multiple devices at the same time. Both Mini and Micro USB line "in" ports are provided for versatile charging capabilities. Charges smartphones or similar devices up to 100% full power and computer tablets and similar devices up to 33% full power. LED indicator light shows device is charging. Includes USB charging cable and four NiMH rechargeable batteries. 10000mAh (Milliamps Hour), 12WH (Watt-Hour).