Battery is an indispensable power source for a cell phone. Therefore， if the battery runs out of power quickly， it really casts a damp over our phone usage. However， keeping an extra battery enables you to enjoy endless pleasure with your cellphone and this Battery would be your best choice. The battery bears the properties of high capacity and dependable performance. It is durable， reliable and lightweight to carry， so it is worthy of your ordering. <br>Easy to charge your battery without the phone， this Battery charger for Samsung Galaxy S2 i9100 is a necessary device on your office desk or at home. Such Battery charger is great partner for you as a backup battery charger! This mobile phone charger featuring quick charge with automatic constant current control prevents battery from overcharging， short circuit， and electronic shock， preserving your battery′s life span.                                     Features            2450mAh High Capacity Replacement Gold Battery for SamSung Galaxy S II S2 i9100All batteries have been tested before shipmentStay connected with your family and friends by getting extra battery power todayThis replacement battery has an integrated microchip that prevents overcharging and lengthens battery lifeBest replacement for the battery with comparable standby and talk time2450 mAh Extra High Capacity， extra-long stand-by timesCompatible with Samsung Galaxy S2 i9100 Battery and chargerLight Weight， High Capacity !#!amp!*! Low ImpedanceOur battery is sent out with little or no power， so please charge it for hours before usingBattery charger for Samsung Galaxy S2 i9100New Battery Charger for SamsungEasy to charge your battery without the phoneBuilt-in protection circuit prevents overcharging and heatsCharge from a USB port or power outletCharge two batteries at the same timeCE and CCC certification                                                            Specifications            Battery type    Lithium Ion    <br>Dimensions    5.9x4.6x0.5 cm / 2.32x1.81x0.20 inch (L x W x H)    <br>Voltage    3.7V    <br>Capacity    2450 mAh    <br>Weight    32 g / 1.13 oz    <br>Compatible with    Samsung Galaxy S2 i9100    <br>Input    AC 100 - 240V ~ 50 / 60Hz 0.15A    <br>Output    DC 4.2V 350mA -- + 50mA    <br>Output    USB 5.2Vd.c. 800mA    <br>Dimensions    3.27" x 1.97" x 1.02" (L x W x H)    <br>Weight    1.9 oz    <br>Color    Black    <br>                                                            Package Includes            3x Battery1 x Battery charger for Samsung Galaxy S2 i9100