Features: AC/DC power input stabilize charging mode Can charge flat or round Li-ion Battery Low voltage stabilize This charger is able to charge 14500 17500 18500 17670 or 18650 Li-ion battery Ensure battery is fully charged Battery will not be charge if the (+-) sign is oppose Can not charge other types of battery Charger Specification: Model:WF-139 Type:EU Plug Input1:100-240VAC 50/60Hz 12V DC Input2:12V=450mA Output:4.2=450mA Size: 133 x 60 x 27 mm Color:Black Weight:167g Package Include: 1 x Li-ion battery charger 1 x Adapter