UltraFire WF-128S Universal 4-18650 / AA / AAA / 16340 Battery Charger - Grey
Input voltage: DC 12V / 1000mA / 50~60Hz; Charging current: 2 x (4.2V / 1000mA); With red indicator while charging and switch move to Charge; Switch moves to USB O/P while discharging; Four independent charging circuit.