This package is specifically designed for Samsung Galaxy J7 (2017) ,Model SM-J727U from Unlocked as we stated in our listing.
There are many Samsung Galaxy J7 in the market, they all use different battery.
If you do not have Samsung Galaxy J7 (2017) SM-J727U , this package is not for you.
You do not need a special back cover to use this battery
1)Universal USB/AC Charger:
* This is an universal charger , which can charge virtually all smartphone li-on batteries in the market.
* 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.
Here is the instruction:
* To Charge the battery for Samsung Galaxy J7 (2017) , 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.
* The LED Light will turn Red when charging the battery, turn blue to indicate the battery is fully charged.
2)New 3600mAh Rechargeable Li_ion Battery:
* Brand: AceSoft .
* Battery Type: Lithium Ion.
* Battery Capacity: 3600mAh .
* Voltage: 3.8V.
* Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using.
3)Folding Bracket:
* Material: durable& lightweight plastic.
* Size: 5.2cm x 3.5cm.
* Creative 2-stage stand and adjustable design
* Suitable for your smartphone or tablet upto 8".

• * Authorized AceSoft Dealer
• * Package includes: 3600mAh Best Replacement Li_ion Battery X 1
• * Universal Travel Dock USB/AC Charger X 1; Folding Bracket X 1
• * Compatible with: Samsung Galaxy J7 (2017), SM-J727U ( Unlocked )
• * Accessory only, Cell phone not included.

* Authorized AceSoft DealerAceSoft