USTOP&trade;Black Small waist 2600mAh USB Port Power Bank portable charger External Battery for iphone 5 ipad, samsung Galaxy Nexus, Blackberry, HTC, LG, Motorola,Nokia Lumia 1020 928 Capacity: 2600mAh Cell: 3.7V/18650 Input: 5V/1A; Output: 5V/1A Charging time: about 5 hours Cycle life: at least 500 times