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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100% Brand New.
1)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.
* Keep an extra battery on hand for extend standby and talk times.
* Integrated microchip prevents overcharging and lengthens battery life.

• * Authorized Deep Stretch Dealer
• * Battery type: Li-ion; Voltage: 3.8V; Capacity: 2700mAh
• * Package includes: New 2700mAh Rechargeable Li_ion Battery X 1
• * Compatible with: LG Spirit H422
• * Accessory only, Cell phone not included.

* Authorized Deep Stretch DealerDeep Stretch