Sep 28, 2021 · The current can be converted into two-phase alternating current and three-phase alternating current with direct current, so the charging time is 5 to 8 hours depending on the capacity of the battery pack. The onboard charging mode takes a long time to charge and cannot meet the emergency operation needs of the vehicle.The AC charging pile provides AC 50Hz, rated voltage 220V AC power supply, and is supplied to an electric vehicle with a vehicle inly applicable to the following places Large, medium and small electric vehicle charging stations Various public places with electric car parking spaces, such as urban residential quarters, shopping plazas ...A: To know how long to charge a car, you need to know the OBC(on board charger) power of the car, the car battery capacity, the charger power. The hours to fully charge a car =battery kw.h/obc or charger power the lower one. For e.g, the battery is 40kw.h, obc is 7kw, charger is 22kw, the 40/7=5.7hours. If the obc is 22kw, then 40/22=1.8hours.