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.
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100% Brand New.
1)To Charge battery for LG Optimus L70 , 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 2700mAh Rechargeable Li_ion Battery:
* Brand: Unbranded.
* Battery Type: Lithium Ion.
* Battery Capacity: 2700 mAh.
* Voltage: 3.8V.
* 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.
* 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,

• * For LG Optimus L70 Battery Charger Cable Accessory .
• Package includes : New 2700 mAh Rechargeable Li_ion Battery X 2.
• Unversal Travel Dock USB/AC Charger X 1. USB Data Sync Charging Cable(1M / 3 Feet ) X 1
• Compatible with: LG Optimus L70 D321 Cricket
• Accessory only, cell phone not included.

* For LG Optimus L70 Battery Charger Cable Accessory .SodaPop