Electric vehicles can't be charged, they can't be charged all the time.
The battery needs to be activated first, and the method of activating the battery of the electric vehicle battery loss (it is best to go to the repair shop for testing, and the professional is safer and more authoritative) :
1, low voltage charging or fast charging
First use a low-voltage charger to charge for two hours, use a multimeter to see if the battery voltage changes, and then use the original charger to charge, such as using a 60v charger to charge a 72v battery. Charge the fast charger for two hours. Check the voltage with a multimeter detector. If the voltage rises, the battery is activated and can be charged normally. Or you can charge each battery in the whole set with a 12v charger.
2, load assist method
The charger is not charged, the green light is displayed, first check whether the charger plug or battery jack is in place, turn on the power, you can open the electric door lock, car headlights, after turning on the headlights, the charger will show red, indicating that the electric car is auxiliary charging, two hours later turn off the headlights, electric door lock, continue to charge the battery for 8 hours.