Color Black Plug Specifications EU Plug (2-Round-Pin Plug) Brand NO Model KU20 Quantity 1 Piece Material ABS Charging Cell Type Lithium Ion Charging Battery Type 18650AAAAA Rechargeable Battery Qty 2~4 Target Country & Region EURO Built-in Protected Circuit Yes Input Voltage AC100~250 V Output Voltage 4.2 V Max. Output Current 500 mA Fast Charging Function Yes LCD Screen No Auto Circuit Detection Yes Indicator Red light: charging / green light: fully charged Over Voltage Protection Yes Short-Circuit Protection Yes Over-Charging Protection Yes Over-Discharging Protection Yes Other Features Suitable for all headlamps powered by 18650 battery; charging: 2~4 hours. Packing List 1 x Charger