The charging method of fast charging and slow charging is different, the fast charging voltage and current are higher, and the charging speed is faster, while the slow charging is the opposite. If you want to change the car from fast charge to slow charge, you need to interrupt the fast charge source during the charging process, and then use the slow charge source to connect to the vehicle for charging.
In addition, it can also be set through the vehicle's charge control system to automatically switch to slow charge after reaching a certain amount of power. However, it should be noted that switching the charging method may affect the charging efficiency and charging time, so it should be selected according to the actual situation.