sentences:  The US-based SAE International defines Level 1 charging as using a standard 120 volt AC house outlet to charge an electric vehicle.This will take a long time to fully charge the car but if only used to commute or travel short distances, a full charge is not needed or can be done overnight.Level 1 is not used in countries where houses typically have 200-240 V.
  
  240 volt AC charging is known as Level 2 charging.