Product Review

Alpatronix [BX440] 4000mAh Rechargeable Battery Charging Case for Samsung Galaxy S9 (5.8-inch) Compatible with Qi Wireless Charging

Overview:
Designed by Alpatronix to improve the performance and battery life of your Samsung Galaxy S9 (Not compatible for S9 Plus).

Features:
Slim, lightweight and compact design for portability.
4000mAh built-in battery provides your Samsung Galaxy S9 up to 1.5x the needed charge.
Top/bottom slide-in design for better security and easy installation.
Qi-enabled, supports universal wireless charging.
Power LED Indicator - Will indicate the level of power your battery case is currently charged.
Covered buttons for easy access to all ports, switches and buttons.

Specifications:
Capacity: 4000mAh Li-Polymer Rechargeable Battery
Product Dimensions (L x W x H; inches): 2.87 x 0.66 x 6.2
Weight = 4.16 ounces
Input (micro USB): DC 5V-1.8A (Max)
Input (wireless): DC 5V-1.2A
Output Voltage: 5.0±0.25V/1.8A (Max)
Protection: Short circuit and Overcharge
Compatibility: Samsung Galaxy S9 (5.8-inch)
micro USB-C port (can be used for data transfer for Android and PC compatible devices such as Macbooks and Laptops to sync music, photos, files and videos).
UL Certified Battery: highest certification for batteries to ensure the safety of our customers (note: using aftermarket USB cables and/or using USB chargers that supply more power than the input of this product can cause extreme heat generation, explosion, or fire... as is the case with any electronic product).
FCC, CE and RoHS: meets all consumer regulatory requirements in the United States and the European Union.

Package Contents:
1x battery case
1x lifetime warranty card
1x user manual

Satisfaction Guaranteed: We offer a LIFETIME hassle-free warranty to ensure long-lasting coverage, power and protection!