The li-ion battery features high capacity and extra long stand-by time. It has lengthened overall battery life， providing the best possible performance. Li-ion Battery is environment-friendly without any hydrargyrum， plumbum， cadmium and other harmful elements.                                    Features                High quality Li-Ion battery<br>    Stay connected with your family and friends by getting extra battery power today<br>    This replacement battery has an integrated microchip that prevents overcharging and lengthens battery life<br>    Best replacement for the original battery with comparable standby and talk time<br>    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<br>                                                            Specifications                        Cell type     Lithium Ion    <br>          Voltage     3.7V    <br>          Capacity     3500mAh    <br>          Dimensions     Battery Cover: 2.60 x 1.61 x 0.39 inch / 6.6 x 4.1 x 1 cm<br>Extended Battery: 4.33 x 2.48 x 0.35 inch / 11 x 6.3 x 0.9 cm    <br>          Weight     70g / 2.47 oz    <br>                                                             Package Includes              1 x Extended Battery<br>  1 x Battery Cover<br>