Alpatronix Galaxy S4 Battery Case, BX400 3000mAh Slim External Protective Removable Rechargeable Portable Charging Case for Samsung Galaxy S4 [S4 Charger Case Power Case & Juice Bank] - (White) POWERFUL CHARGE: 3000mAh Galaxy S4 battery case effectively charges well over 100% to last you the entire day. The built-in battery will last you up to 1.5x the battery capacity! MADE FOR GALAXY S4: 100% fully compatible to support Android OS 6.0+ (Marshmallow), Android OS 5.0 (Lollipop) and older, future Android OS software updates. SLIM: 360 scratch-guard protection minimizes bulk and weight for Galaxy S4 charger case. Raised front bumper stands higher than your Galaxy screen to avoid contact with other surfaces. A high quality screen protector is included with the Galaxy S4 charging case. EASY INSTALLATION: Pull the top piece up on the battery case and then insert your Galaxy S4 into the micro USB connector, then snap the top piece down to secure the S4 into place. The Samsung S4 extended battery case uses a micro USB input port to enable recharging and data transfer. You can conveniently charge and sync both the battery case and Samsung Galaxy S4 to your laptop or PC without having to remove the battery case itself. A micro USB cable is already included. 100% SATISFACTION GUARANTEED: Easy access to all ports, sensors, speakers and camera. Comes with an exclusive 1-year Alpatronix limited warranty (when purchased from authorized sellers) and 30-day money back guaranteed. Purchase with confidence! Don't like it? Simply return it.