Level 1 Chargers Use a common three-prong (NEMA 5-15) 120-volt AC electrical outlet found in North America. Provide 2 to 5 miles of range per hour of charging, or about 40 miles of range on an overnight charge. Most electric cars include this charger, so no additional equipment will need installing. Level 2 Chargers Use 240-volt AC electrical service typically [...]