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. ====================================================================== 100% Brand New. 1)To Charge battery for ZTE Prestige, 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. * Now you could plug in the charger with the battery into a power socket. * The LED Light will turn Red when charging the battery, turn blue to indicate the battery is fully charged. 2)High Capacity 2400mAh Rechargeable Li_ion Battery: * Brand: Unbranded. * High quality Li-Ion battery. * Battery Type: Lithium Ion. * Battery Capacity: 2400 mAh. * Voltage: 3.8V. * Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using. * Keep an extra battery on hand for extend standby and talk times. * Integrated microchip prevents overcharging and lengthens battery life. * This Battery could also be charged in the phone directly thru the cell phone charger. 3)USB Data Sync Charging Cable(1M / 3 Feet ): * 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. * Links up your computer with your phone,which allows you to backup phonebook and contacts,store pictures,