① The first charger has a problem.
② Poor connector contact.
line fault
If it is charged at home, you can drive the car to the charging station or the power grid with a public charger to charge, if the charger can be charged normally, it is necessary to check the portable charging station charging line and the power supply system of the motor at home, such as poor ground contact, if the charging station charging is not possible. It is necessary to consider whether there is a short circuit or virtual connection between their interface and the line between the interface and the controller. This is going to the repair shop for further testing
Battery car charger lines are generally semi-intelligent charging lines, that is, fast charge first, and then constant current charging, when the battery voltage reaches a certain standard, the intelligent detection circuit in the charger will automatically cut off the charging state, the phenomenon you said can have two reasons, one is that the battery aging feedback to the charger detection circuit voltage does not reach the limit value of the need to cut off the charging process, Second, the charger charging detection line fault can not cut off the charging state. It is recommended that you find a charger of the same model to try to determine whether the battery is faulty or the charger is faulty.