1, the battery is too low: when the electric vehicle battery is too low, the charger will automatically disconnect the charge, at this time you can check the battery power, if the power is less than 20%, you can try to re-charge.
2, the charger failure: the charger failure will also cause the electric car charger to break, at this time you can check whether the charger is damaged, if there is damage, you can try to replace the charger.
3, battery damage: battery damage will also cause the electric car charger to break, at this time you can check whether the battery is damaged, if there is damage, you can try to replace the battery.