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. ======================================================================
1)AC/USB Desktop Battery Charger : * Quick charge with automatic constant current control prevents battery from over charging, short circuit, and electronic shock.
* Charge your cell phone battery without the phone.
* Also work with OEM (original) battery.
* LED charging light indicator. Turn red in charging, turn blue when done.
* Input: AC 100-240V 50/60Hz 150mAh.
* Output: DC 4.2V 350mAh ± 50mA.
* USB Port Output: 5.2V 800mAh.
* Use this charger to charge the stock battery as well, swap one out when the other dies.

2)High Capacity 3500mAh Rechargeable Li_ion Battery:
* Brand: AceSoft.
* Battery Capacity:3500 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. 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.
4)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

• "Authorized AceSoft Dealer"
• * Package includes : AceSoft 3500 mAh Rechargeable Li_ion Battery X 2.
• USB Charger X 1,Screen Touch Pen X 1. USB Cable X 1
• Compatible With:Samsung Galaxy J3 V SM-J320V( Verizon )
• Accessory only, cell phone not included.

"Authorized AceSoft Dealer"AceSoft