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External battery for iPhone 3G/3Gs/4G

2Ah---5Ah

* Built in Lithium polymer battery’s capacity: 3.7V/1300mAh
* Output voltage: IP/DC=5.10V±0.05V
* Static current:﹤50Ua
* Charging state: standard charging, 50mA, constant current 500mA±20mA, constant voltage 4.1V stop
charging current 50mA, full charged voltage:4.15V~4.20V.
* Output current: 0.7A(max)

GiftBox
* 1pc USB charging cable