Our electricity grid runs on Alternating Current (AC). However, batteries store power as Direct Current (DC). Your EV has a rectifier that converts AC to DC current called the ‘on board charger’.
AC Charging is the most common charging method. Your EV charges through the on board charger converting AC to DC current, feeding the car’s battery.
DC charging skips the vehicle’s on board charger, delivering direct current (DC) power to the battery, allowing the EV a much faster charge rate. The AC to DC rectifier is located in the charger itself.
The speed of AC charging relies on the size of your on board charger.
The speed of DC charging relies on your vehicle’s capabilities and the rating of the DC charger. Most EVs that are capable of DC charging can now charge at up to 70kW. Some can go up to 100, 150 and 250kW.