This type of unit charging is compatible with all of the electric vehicles and plug-in electric hybrid vehicles. These types of charger having a cord which will be plug directly into the vehicle in the same connector as used in level 1 charging. It usually takes 4 to 6 hours to get a complete charged. The charging time may vary depending on the weather conditions as in cold temperature. These type of chargers are found usually in residential areas, public parking's, in commercial settings and at places of employment.