Compatibility: The 42V 2A Battery Charger is designed exclusively for 36V electric bike/scooter batteries (Not for other voltages).
2.1mm DC Jack Connector: 5.5*2.1mm. Please make sure your battery charging port is compatible with the this product before purchasing.
Safey Protection: This charger features 4-in-1 safety protection(OVP:Overvoltage protection)/(OCP:Overcurrent protection)/ (OLP:Overload protection)/ (SCP:Short-circuit protection), providing comprehensive safety for your devices.
Indication Light: Red Light when charging, Green Light when battery is fully charged.
Note: If the green light turns on immediately after connecting the charger to the battery, disconnect the power immediately and measure the battery voltage. Using this charger when the battery voltage is below 27.5V is strictly prohibited and extremely dangerous.