Everyone wish everything can go smoothly. But there are always something wrong occurred unexpected. Therefore， you should take everything into consideration. This internal battery is your best choice to replace your original battery if there is something wrong with it. This battery can be recharged without loss of capacity. Made of high quality material， it has the same functions of the original one. Make a good decision and place an order right now!                                    Features            High quality replacement batteryStay 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 original battery with comparable standby and talk time1220mAh extra high capacity， extra long stand-by timesCompatible with iPhone 3GS battery and chargerLight weight， high capacity &amp; low impedanceAll batteries have been tested before shipmentOur battery is sent out with little or no power， so please charge it for about 4-6 hours before using                                                            Specifications            Battery type    Lithium Ion    <br>Dimensions    6.8 x 4.8 x 0.3cm / 2.68" x 1.89" x 0.12" (L x W x H)    <br>Voltage    3.7V    <br>Capacity    1220mAh    <br>Weight    0.85oz / 24g    <br>Compatible with    iPhone 3GS    <br>                                                            Package Includes            1 x 1220mAh Replacement Lithium Polymer Battery for iPhone 3GS