Battery Type: Lithium-Ion; Battery Voltage: 7.0V; Battery Capacity: 2600mAh. Kastar LCD Dual USB charger, can charger 2 batteries in the same time. Easy to carry, the Charger Input: 5V 2A 10W; Output: 8.4V 0.65A(x2). Intelligent LCD charger displays charging status and battery capacity. Can be powered by USB Wall & Auto Charger or a Computer, comes with a Micro USB cable.