8.4V 1A charger, bicycle lamp charger, American/European/Australian/British standard four options, using dual IC protection scheme, stable performance, can prolong the service life of 18650 lithium battery. HaveTwo -color turning function, when the battery is charged, the red light is on, Green light when full, welcome to order. Interface: 5.5 DC Size: 73 * * 27 39 mm The Output power: dc8.4 v / 1 a Input voltage: 100 ~ 240 VAC 50/60