The power requirements of the different levels of charging stations are:
Level 1 Charging Station: This is the slowest type of EV charger. Level 1 charging stations use a standard 120-volt AC plug, the same type of outlet found in most homes. The maximum power output of a Level 1 charging station is 1.44 kilowatts (kW). An average EV has a battery capacity of about 50kWh, so a full charge using a Level 1 charger can take about 35 hours.
Level 2 Charging Station: This is a faster type of EV. Level 2 charging stations require a 240-volt AC power source and can deliver up to 80 amps of current, with a maximum power output of 19.2 kW. In this case, a full charge would require over 2.5 hours.
Level 3 (DC Fast Charging) Station: Because waiting 3 or 30 hours is impractical during on-to-go charging (your EV at various charging stations while you’re out and about), ultra-fast Level 3 chargers are required. This is the fastest type of EV charger. Level 3 charging stations use a 480-volt DC power source and can deliver up to 500 amps of current, with a power output of 150-350 kW.