Key FeaturesSmall in size and easy for carryingSupporting 95% of smartphonesCan charge a PC tabletExternal battery designed especially for iPhone®, iPod®, Nokia, Sony Ericsson, LG, Samsung, HTC, Blackberry, Motorola and many other mobile devices.Specifications:Battery: Li-polymerCapacity: 2600mAhProduct Compatibility: iPod, iPhone 3, 3GS, 4 and 4S and Smart Phones ( Samsung, HTC, Blackberry, Nokia, Sony, etc )Input: DC5V/1A (max)Output: DC5V/1A (max)Self charging time: 4.5hoursIndicator button: Press to display the remaining batteryIndicator light: 4 blue indicator lights, each representing 25% of total battery chargeDimension: 88*54*16mmWeight Approx.: 73gOperation:How to charge the mobile powerConnect the adaptor cable to the Mini-USB connector.Plug the Mini-USB end of the cable into the input port of the mobile power, and the other USB2.0 end into the computer or USB adapter.How to charge a deviceSelect the adapter for the phone that needs charging and connect it to the adapter cable.Plug the USB2.0 end of the cable into the output port of the mobile power, and the other end into the phone.When connected, a charging symbol will appear on the screen of the phone, indicating that it is charging.