iPhone 6 / 6S Battery Case, Apple MFi Certified EZOPower 3500mAh iPhone 6 and 6S 4.7 Battery Case with Bumper Protection - Black/Silver EZOPower iPhone 6 3500mAh heavy duty external battery case power pack designed specifically for Apple iPhone 6 and 6S 4.7 Inch, Apple MFi Certified. Provides full protection at corner, screen, and frame, with metallic back plate for extra-ordinary durability. With built-in powerful 3500mAh Li-polymer aluminum alloy battery can provide more than a full charge for your iPhone 6 battery LED battery level indicator allows easy to read the battery level. Easy access to ports, secure locking mechanism Protective IC circuit efficiently avoids short-circuit, over-charged and malfunction even under extreme conditions.