Level 1 charging is the lowest level of AC (alternating-current) charging. In general, this refers to the use of a standard household outlet charging.
One end of the charging cable is the standard three-prong household connector, on the other end your EV’s connector plug.
Level 2 is still AC, but at higher power. This is your home charger equipment level of charging at 7, 11 or 22kW.
Level 3 is DC fast charging at public charging stations, and uses a CHAdeMO, Type 2, or CCS type of connector plug (or Tesla equivalent).