You do not need a special back cover to use this battery
This package is specifically designed for LG Spirit ,Model H422 as we stated in our listing.
There are many LG Spirit in the market, they all use different batteries.
If you do not have LG Spirit H422, this package is not for you.
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1)Universal USB/AC Charger:
* This is an universal charger, 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.
* Please see our Title pictures for detail
* Here is the instruction
* To Charge the battery for LG Spirit H422 , 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)New 2700mAh Rechargeable Li_ion Battery:
* Brand: Deep Stretch .
* High quality Li-Ion battery.
* Battery Type: Lithium Ion.
* Battery Capacity: 2700mAh .
* Voltage: 3.8V.
* Best Replacement for the original battery with comparable standby and talk time .
3)Fish Bone Winder Rubber:
* Flexible and washable if need .
* Unique cable winder for organizing your earphone cord
* Compatible with Headphone Cable,Telephone.Cable, Mouse Cable,etc
* Size: 6.4 cm x 2.8 cm Material: Silicone
* Color:as shown in pictures.

• * Authorized Deep Stretch Dealer
• * Package includes : New 2700mAh Rechargeable Li_ion Battery X 2
• * Universal Travel Dock USB/AC Charger X 1; Fish Bone Winder Rubber X 1
• * Compatible with: LG Spirit H422
• * Accessory only, cell phone and Earphone not included.

* Authorized Deep Stretch DealerDeep Stretch