Level 2 charging refers to the voltage that the electric vehicle charger uses (240 volts). Level 2 chargers come in a variety of amperages typically ranging from 16 amps to 40 amps. The two most common Level 2 chargers are 16 and 30 amps, which also may be referred to as 3.3 kW and 7.2 kW respectively.read more >>