Product Features:

1. High capacity 20000mAh external backup battery for your iPhone 3G,3GS,4G,4GS,5 iPod, iPad 1,iPad 2 and mobile phones. 
2.  Designed to provide power for your iPhone, iPad, iPod and mobile phones. 
3.  Built-in 20000mAh high capacity rechargeable Li-Polymer battery. 
4. 20000mAh

Product Features:

1. High capacity 20000mAh external backup battery for your iPhone 3G,3GS,4G,4GS,5 iPod, iPad 1,iPad 2 and mobile phones. 
2.  Designed to provide power for your iPhone, iPad, iPod and mobile phones. 
3.  Built-in 20000mAh high capacity rechargeable Li-Polymer battery. 
4. 20000mAh capability, powerful with long operation time. 
5.  Be compatible with Nokia, iPhone, iPad, MP3, MP4, and other mobile phones... 
6.  The USB output, more convenient. 
7.  High efficiency of power conversion. 
8.  Electricity-saving function.
9.  With 4 LED power indicator. 
10.  Partable, practical and long cycle life. 
11.  Safe and reliable, perfect for using on travelling and outdoor activities.

Specifications: 

Capacity: 20000mAh Li-Polymer 

Input Voltage: DC 5.0V 

Input Current: 1000mA (Max) 

Dual USB output, charge 2 devices simultaneously 

Output Voltage (Port A): 5.0V

Output Current (Port A): 1000mA 

Output Voltage (Port B): 5.0V 

Output Current (Port B): 2100mA IC 

Protection for charging / overcharge / short circuit / discharge 

Circle Time:≥500 Times 

LED indication for Battery Status