This portable backup battery will recharge and keep your 4G battery topped up when you want it. It`s easy to use, just switch on or off as you need it.The 1900mAh Rechargeable lithium polymer battery add extra back-up strength to the one that is in your iPhone 4G.

Description:
Worried about the lack of battery when you playing games or talking? Worried about the lower battery when you Travel in outside?

Specifications:
Weight: 65g
Capacity: 1900mAh
Cell type: Li polymer battery Lithium-ion
Dimension: 12.5x63x16(mm)
Outpur voltage: 5V
Output current: 50mA
Cycle life: 500times
Function & character: Enhance iPhone4 signal
Power check & indication
Power switch
Protective and powerful
Standby Time-Up to 230 hours
Talk Time-Up to 6 hours
Internet Use-Up to 5.5hours on 3G & up to 8hours on wi-fi
Audio Playback-Up to 30 hours
Video Playback-Up to 8 hours


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