Promotion!!! iPhone 5S and iPhone 5 Ultra Slim Apple MFI Certified 2200mAh Extended Battery Charger Case Power Case with Rechargeable External Battery for iPhone 5S and iPhone 5 (&nbsp;Gray with Black) The Battery case sports a built-in battery which doubles the lif of your Iphone 5/5S Input: 5.0V--1.0A, Output: 5.0V-1.0A,Battery Capacity:2200mAH