USTOP&trade;Red Square cylinder Lipstick 2600mAh Universal Backup USB Battery Power Bank External Battery Pack Charger for Samsung Galaxy S4 Mini S5 S4 Capacity: 2600mAh Cell: 3.7V/18650 Input: 5V/800mA; Output: 5V/800mA Charging time: about 5 hours Cycle life: at least 500 times