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)Universal USB/AC Charger: * This is an universal charger , which can charge virtually all smartphone li-on batteries in the market. * The top panel could be slided and the metal contact pins are also moveable. * You can slide it back and forth to fit virtually any size of Li-On batteries in the market. * You only need 2 pins to charge a battery. Here is the instruction: * To Charge the battery for Samsung Galaxy Core Prime SM-G360V , allow the 2 metal pins on the charger to touch the 1st and the 3rd contacts of battery. * For other batteries, it's not necessarily to be the 1st and 3rd though, please refer to the user manual. * You should see the LED light turn blue on the charger, that means the contacts has been firmly connected. * The LED Light will turn Red when charging the battery, turn blue to indicate the battery is fully charged. 2)New 2780mAh Rechargeable Li_ion Battery: * Brand: Unbranded/Generic . * Battery Type: Lithium Ion. * Battery Capacity: 2780mAh . * Voltage: 3.8V. * Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using. * Integrated microchip prevents overcharging and lengthens battery life. * This Battery could also be charged in the phone directly thru the cell phone charger. 3)Micro USB 2in1 Cable ( 3 Feet/1M ): * New generic 2 in 1 Data/Charging USB Cable. * Charging your Cell phone by connecting this charging cable to our Wall charger. * Provides data transfer, syncing functions in between your cell phone and your PC or laptop via USB port.