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.
URS2GO 4000mAh Rechargeable Li_ion Battery:
* Brand: URS2GO .
* High quality Li-Ion battery.
* Battery Type: Lithium Ion.
* Battery Capacity: 4000 mAh.
* 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.v * Keep an extra battery on hand for extend standby and talk times.
* Integrated microchip prevents overcharging and lengthens battery life.
* Compatible models:
Samsung Galaxy S III SCH-R530C ( Cricket )

• "Authorized URS2GO Dealer"
• * Battery type: Li-ion; Voltage: 3.8V; Capacity: 4000mAh
• * Package includes : URS2GO 4000 mAh Rechargeable Li_ion Battery X 1.
• * Compatible with: Samsung Galaxy S III SCH-R530C ( Cricket )
• * High Quality,100% Brand New. Accessory only, cell phone not included.

"Authorized URS2GO Dealer"URS2GO