Galaxy S9 Battery Case, Casessary 4700mAh Charger Case External Portable Extended Charging Case Rechargeable Protective Backup Juice Pack Power Case Compatible w. Samsung Galaxy S9 (2018 Black)

Features: 
1. Build-in high-capacity lithium-polymer battery, double the standby time for your Galaxy S9.
2. Premium material to protect your phone, charging and protecting 2 in 1.
3. USB OTG data support, enjoy fast data transfer without removing the battery case.
4. Integrated safety features with temperature control, effectively avoid short circuit or overcharge even under extreme conditions.
Note: 
★ Please use original charger or compatible QC 2.0/3.0 charger to ensure quick recharging speed.
★ Do not place battery case to fire / excessively hot environment.
★ The surface of this battery case may gradually become warm when charging. If there's any problem when using our devices, please kindly contact us with the contact info enclosed on the service card, we are always here to help.

Specifications: 
Compatibility: Only for Samsung Galaxy S9 5.8 inch ( Not compatible with Galaxy S9 Plus )
Battery Capacity: 4500mAh
Battery Type: Li-polymer
Input: DC 9V-1.67A, 15W
Output: DC 9V-1.4A, 12.6W
Material: PC+ABS

Package Contents: 
1x 4500mAh Galaxy S9 Battery Case
1x User Manual