Material: ABS Plug: European regulationsCompatible: 26650・18650 and other batteriesThe number of rechargeable batteries: 4The input voltage: AC 100 - 240V 47 / 63HZOutput voltage: DC 4.2V +/- 0.1percent 1ARechargeable battery type: lithium iron phosphate・ lithium ion・ nickel hydrogen・ nickel cadmium