SAE International has approved the new 20-minute fast-charging technical standard for EVs and plug-in electric vehicles.
More than 190 global experts from the automotive, utilities and charging equipment industry joined hands to create the SAE J1772 conductive charge coupler standard, also known as the Combo. J1772’s original version defined AC Level 1 and AC Level 2 charge levels and specifies electrical interfaces and a conductive charge coupler for AC Level 1 and AC Level 2 charging.
This updated version includes DC charging, where electrical interfaces, charge coupler and DC Level 1 and DC Level 2 charge levels are also defined. The fast-charging technical standard has been named Combo as it combines Level 2 and Level 3 charging. According to reports and surveys, automakers are looking very actively at the DC fast charging or Level 3 charging, which accommodates currents as high as 500 volts and offers users a 20-minute charging time.
Unfortunately, the Japanese already have their DC fast charging called the CHAdeMO, which is practically the same as the Combo. The only different, and main drawback, is the fact that it has different connectors. Japan already has more than 1,500 such charging stations, and models such as the Nissan Leaf and Mitsubishi i-MiEV use them.