Material: ABS Plug: US regulation Compatible: 26650・18650 and other batteries The number of rechargeable batteries: 4 The input voltage: AC 100 - 240V 47 / 63HZ Output voltage: DC 4.2V ＼ 0.1 percent 1ARechargeable battery type: lithium iron phosphate・ lithium ion・ nickel hydrogen・ nickel cadmium