This package is specifically designed for LG K30 ,Model LMX410UM from Xfinity Mobile as we stated in our listing. There are many LG K30 in the market, they all use different Battery. If you do not have LG K30 LMX410UM , this package is not for you. You do not need a special back cover to use this battery This package is specifically designed for the cellphones we list here, if your cellphone is not in the list , then it's not for you. ======================================================== 1)3100mAh Excellent Replacement Li_ion Battery: * Brand: Unbranded/Generic . * Battery Type: Lithium Ion. * Battery Capacity: 3100mAh . * Voltage: 3.8V. * This battery is internal battery with pipe line,it has an integrated microchip that prevents overcharging and lengthens battery life. * Best Replacement for the original battery with comparable standby and talk time . * Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using. * Each battery comes with a special chip to protect your smart phone from over-heating, short-circuit, over charging or over discharging. * Integrated microchip prevents overcharging and lengthens battery life. * When using the battery, please notice that use up all the power of battery for the first three times before charging, and then take a full charge, thus the battery can be reached the optimum effect of using.Please remember that its full performance and longevity is only achieved after 3 to 5 complete charge and discharge cycles. * Replace your existing smart phone battery with a stronger.(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.)
