4000mAh longer life extended lithium battery for ATT Samsung Galaxy S II Skyrocket SGHI727

100% Brand New.
Please note =====================================================================================================================
This package is specifically designed for Samsung Galaxy S 2, Model SGH-i727 from AT&T as we stated in our listing.
There are many Samsung Galaxy S II in the market, they all use different batteries.
If you do not have Samsung Galaxy S 2, Model SGH-i727, this package is not for you.

Battery Back Cover for Samsung Galaxy S II Skyrocket SGH-i727（AT&T) Cellphone.
* Keep your cell phone look new.
* Size: perfect fit.
* Accessory only, cell phone not included.
4000mAh Extended Battery:
* Brand:AceSoft.
* Excellent quality AceSoft battery for Samsung Galaxy S II Skyrocket SGH-i727（AT&T).
* This battery has an integrated microchip that prevents overcharging and lengthens battery life.
* Cell type: Lithium Ion.
* Voltage: 3.7V.
* Capacity: 4000mAh.
* The battery operation time depends on conditions such as:
Transmitting power level, Signal (distance between the phone and the base station),Network parameters defined by the operator.