Electric car charger is reverse connection, do not change the charger, change to a positive connection, only need to cut the plug line, the two lines can be connected in turn. The electric vehicle charger output is DC voltage, generally using a three-hole plug, the plug symbol is vacant, the L end is connected to the charger output positive, the N end is connected to the charger output negative.
If the electric car battery is the opposite of it, the charging line can be cut without opening the charger to replace the position of the two lines, and the two power lines can be switched to connect. So the L-hole of the plug is the negative output of the charger, and N is the positive output of the charger.