At an AC charging station, AC power through the grid is supplied to this onboard charger, which converts it into DC power to recharge the battery. DC chargers deliver higher power charging (which needs much larger AC-to-DC converters) by creating the converter in to the charging station as an alternative https://dinahs481mwf6.ltfblog.com/32127494/the-greatest-guide-to-car-charger-brands