This is a charger to use with the most advanced high-power Lithium ion battery technology installed in e-scooters. This 4AH lithium ion battery charger unit is designed for charging and maintaining lithium-ion batteries. This charger includes built-in circuit protection guards in case of overload. The charger has a built in fan to prevent from overheating. 67.2V 4AH LITHIUM ION BATTERY CHARGER PN:SG4118 CE AND ROHS Compliant this charger is made for all e-bikes and e-scooter comes with GX12-3 3 pin, Good solid performance comes with built in fan and overcharge protection.