To charge an electric vehicle’s battery, Level 1 and Level 2 charging both use alternating current (AC) plugged into the vehicle’s on-board charger. Each charger has an SAE J1772 plug, making them suitable for use with any American-made electric vehicle (Tesla models come with an adaptor upon purchase). The rate at which an EV can be charged is the primary distinction between Level 1 and Level 2 charging. Using a standard 120V household outlet, Level 1 EV charging cables can add only 3–5 miles of range per hour. Level 2 EV charging stations, on the other hand, necessitate a 240V connection and can add 15-30 miles to your range in an hour. Some level 2 chargers also have smart EV charging capabilities.