At an AC charging station, AC power from the grid is supplied to this onboard charger, which converts it into DC power to recharge the battery. DC chargers supply higher power charging (which necessitates much greater AC-to-DC converters) by creating the converter to the charging station rather than the vehicle https://johsocial.com/story9303329/the-basic-principles-of-ecoflow-wave-2-car-charger