What are Level 1, 2, 3 charging?

These levels group the available charging power for the connection. Level 1 and 2 are AC (grid) connections with Level 1 generally being 120 volt and Level 2 being 208/240 volt. Level 3 refers to DC fast charging (DCFC) with voltage and current (i.e., power level) being specific to the car. The following diagram shows charging power and speeds for these levels.

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