Alpatronix Galaxy S9 Battery Case, BX440 4000mAh Slim Portable Protective Extended Charger Cover with Qi Wireless Charging Compatible for Samsung Galaxy S9 (5.8-inch) (Black) [Upgraded]

Rebate: 84%
YOU SAVE $42.00


+ Free shipping
Get more Rebates up to 100% for Cell Phones & Accessories

This rebate is no longer available.

See More Deals


  • Slim, lightweight and compact design for portability.
  • 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.
  • Micro USB-C port (can be used for data transfer for Android and PC compatible devices such as Macbooks and laptops)

  • Battery Capacity: 4000mAh
  • 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)

You can charge and sync your Galaxy S9 with your laptop, or charge it with your Samsung wall charger while your S9 is installed in the case. Simply connect your USB-C cable that came with your Galaxy S9 for charging and data transfer. The case is programmed to let your phone charge first, followed by the battery case.


No more wires or cables! Supports universal wireless charging. Simply place on any wireless charging pad to start charging. It will charge your Galaxy S9 first to full then your battery case next. If placed over night, both your Galaxy S9 and battery case should be fully charged. Input (wireless): DC 5V-1.2A

The CX101 wireless charger pad and CX200 wireless charger stand are fully compatible with the BX440 Qi wireless battery case.

Install RebateKey Chrome Extension to unlock Cashback Rebates, Coupons, Daily Deals, Discounts and Amazon Promo Codes automatically!

Install Chrome Extension

Similar Rebates and Coupons

You'd like to get access to hundreds of deals?

Join tens of thousands of smart and happy shoppers! What are you waiting for?

Sign Up Now!