Why does the electric vehicle charger turn green after charging for a while?
4 Answers
Electric vehicle charger turns green after charging for a while due to charger malfunction. Here is an introduction to battery charging voltage and current: 1. Voltage: The car charging voltage is 12V. During the charging process, the charging voltage is mostly between 13.5-14.5V. When charged in the vehicle by the rectifier, it will not exceed 15V. If using a charger, the charging voltage is generally 14V. 2. Current: During the car charging process, the charging current should not be too large. It is recommended that car owners avoid using fast charging. When charging, use a current half the size of the rated charging current, and the rated charging time should be doubled.
Let me tell you, it's quite common for electric vehicle chargers to turn green after charging for a while, so don't worry too much. From my experience, the most common reason is that the battery is already fully charged, but sometimes issues with the battery itself can trigger the charger's protection mechanism, causing it to automatically switch to green and stop charging. Check if the charging port is loose or if the socket voltage is unstable—some cheap sockets with insufficient voltage can cause the charger to misjudge. Additionally, extreme hot or cold weather leading to abnormal battery temperature might also trigger protection. I suggest trying a different socket and using a multimeter to check the voltage. If the issue persists, it could be an internal fault in the charger or the battery reaching the end of its lifespan, requiring replacement parts. Regular maintenance of your electric vehicle's battery is crucial to avoid deep discharge and overcharging.
I've encountered this situation several times, and it's usually either a charger issue or a battery problem. If you're using fast charging, sometimes the charging speed is too rapid, and the system will automatically cut off power when detecting abnormal current for safety reasons. First, check if the charging cable is intact without any damage, and see if there's any sparking at the power outlet. Additionally, if the electric vehicle's battery is aging, the full charge time will become shorter, and it's normal for the charger to show a green light. If this happens with a new car, immediately check if the charging port connection is loose, and send it for repair if necessary. Avoid charging in environments with extreme temperatures—too hot or too cold. In summer, it's best to avoid charging stations under direct sunlight.
I think the reason for the charger turning green needs to be analyzed. It could be due to a charger malfunction triggering the overheating protection, causing it to stop working immediately; or perhaps poor socket contact and unstable voltage causing an error signal. Additionally, as electric vehicle batteries age and their capacity decreases, charging may speed up, leading to this situation. From a safety perspective, first disconnect the power and check if there are any damaged components or a burnt smell. Don't overlook potential hazards—get a professional inspection as soon as possible to avoid accidents. When charging, choose a well-ventilated area to minimize temperature effects.
