What type of EV charging station regulates voltage and current to the vehicle using an external charging system?

The correct answer is that a DC charging station regulates voltage and current to the vehicle using an external charging system. In a DC charging setup, the charging station converts alternating current (AC) from the grid into direct current (DC) and supplies it directly to the vehicle's battery. This allows for faster charging times compared to AC charging, as DC charging stations can supply high power levels suitable for rapid battery charging.

In contrast, an AC charging station typically delivers AC power to the vehicle, and the vehicle’s onboard charger is responsible for converting that AC power to DC for battery storage. This internal conversion process means that AC charging is generally slower than DC charging.

Overall, the distinct operational characteristics of DC charging stations make them the correct response for the question regarding the regulation of voltage and current from an external source to the vehicle.