Different technologies compete to satisfy electric vehicle shoppers.Level 1 chargers: Use 120-volt AC power and a standard household plug. They provide about 1.4 kilowatts of power to an EV, adding 4 to 5 miles of range per hour. They can be sufficient for low-mileage drivers who also have access to public chargers.Level 2 chargers: Use 240-volt AC power and a plug required by higher-power home appliances, such as a central air conditioner. They provide about 7.2 kW of power, but charging rates vary by vehicle. EVs can generally add 20 to 30 miles of range per hour on Level 2 chargers, which can be installed at home or in public parking lots.Direct-current fast charging: These systems, sometimes called Level 3, require a high-power installation, often at public charging stations. Typical DC chargers provide 50 kW to 150 kW of power, but charge rates vary depending on the vehicle battery and software. Ultrafast DC chargers are becoming more common and can provide up to 250 kW at Tesla stations and up to 350 kW at non-Tesla stations. Depending on the power and vehicle, DC chargers add 60 to 300 miles of range per half-hour.Source: EVgo, Tesla
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