J1772 charge port
Level 1 charging stations use a normal 120-volt connection with a standard household outlet with no extra costs of installation. The downside is slow charging speed. Many EV charging took place at owners’ houses. Level 1 provides 1.4 kW of power in the U.S., is simply a conventional wall socket, and requires no additional circuitry, aside from the adapters required to connect the EV to the socket.