Battery: Li-ion & Li-polymer, 7.4V-11.1V (2cells-3cells) Input:10V-15V Charger rate:0.8-1.0A Size(mm): 80?0?0 Switch for 2cells or 3cells. LED indicates the battery status. Power(red), charging(yellow), and full(green). Includes JST plug and alligator clip input connectors.