4000mAh China style USB external battery backup for tablets/iPhone/iPad/galaxy

Key features
4000mAh available
Class A lithium battery cell
Long cycle life: 500times
For Cell Phones, iPhone, iPod, and Most USB Powered Devices

Specification:
Capacity: 4000mAh
Size: 100*44*25mm
Color: White
Battery: Lithium-Polymer
Output voltage: DC5V± 0.5V
Output current: DC1000mA
Input voltage: DC5V± 0.5V
Input current: 500mA

Features:
Hot sell model power bank for iPhone/iPad
Powerful with long operation time
Portable and convenient
High efficiency of power conversion
Electricity-saving function
User friendly
Rapid charge
Environmental friendliness & economic efficiency.