A standard 120V outlet can charge at about 3 miles of range per hour; a Level 2 charger at 220/240V can deliver anywhere from 10 to 25 miles of range per hour depending on the power limitations of the charger, the vehicle, and the power supply at the home or facility. DC fast charging systems can charge an EV in about 20-90 minutes depending on the rated power, and in less than 15 minutes with higher power technology.