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)Universal USB/AC Charger: * To Charge battery for ZTE Majesty,Z796C(Straight Talk/NET10) , allow the 2 metal pins on the charger to touch the 1st and the 3rd contacts of battery. * For other batteries, Please refer to battery user manual to check which pins to be connected, contact points would vary on different batteries. * You might also want to flip over the battery and try different contacts on the battery. * 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)New 2700mAh Rechargeable Li_ion Battery: * Brand: Deep Stretch . * High quality Li-Ion battery. * Battery Type: Lithium Ion. * Battery Capacity: 2700mAh . * Voltage: 3.8V. * The best spare battery for your phone. * 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. 3)Screen Touch Pen * Soft touch tip material prevents scratching to.the screen very smooth tip suitable for drawing,jotting notes,playing games and navigating on your device. * Lightweight copper body 1.Smooth Movement. 2. Lightweight body (5g) 3.Finger Pressure