USTOP&trade;Black 5600mAh Portable External Battery Power Bank Backup Charger for iPhone 5, 4S, 4, Galaxy Nexus, Blackberry, HTC, LG, Motorola,Nokia iPod Touch/Samsung Galaxy S3 S S2 S II Capacity: 3.7V/5600mAh(18.5Wh) Battery Type: 18650 cylindrical battery Input: 5V/1000mA Output: 5V/1000mA Cycle life: at least 500 times LED light: 14000-18000 lumens