The power bank is a high capacity at 20000Amh, portable intelligent charge for mobile phone, but whenever and wherever possible, MP3/MP4, PSP, PDA, GPS, Bluetooth, digital cameras, computer and so on, let your life more convenient Suit for travel and Other indoor-outdoor activities, can provide you and those around you and bring great convenience. Each has 2 USB output ports that detect all the connected devices and efficiently distribute the current output up to 5V 2.1A. Thanks to the Li-polymer battery pack, the charger is much safer than any Li-ion charger. Also, it's lighter and slimmer that you can easily carry it around, even on airplanes. It can be charged for more than 500 circles and with good durability, The product is more suitable to carry out for daily use and prepare contingency. Within its slim body is a 20,000mAh capacity battery that can power up your devices multiple times. The two USB ports of this charging accessory enable quick recharging of your mobile devices. The easily readable, onboard LCD alerts you to the level of charge that is remaining in the device. This plug and go cell phone charger also comes with a USB cable for charging your devices.