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SAE International releases new fast-charging combo coupler standard (SAE J1772) for plug-in electric and electric vehicles

SAE International’s anticipated new revised technical standard for the combo coupler for plug-in hybrid electric vehicle (PHEV) and electric vehicles (EV) has been approved and published. (Earlier post.)

Developed in a consensus environment by more than 190 global experts representing automotive, charging equipment, utilities industries and national labs, “J1772: SAE Electric Vehicle and Plug in Hybrid Electric Vehicle Conductive Charge Couple” enables charging time to be reduced from as long as eight hours to as short as 20 minutes.

This new standard reflects the many hours that top industry experts from around the world worked to achieve the best charging solution— a solution that helps vehicle electrification technology move forward. We now can offer users of this technology various charging options in one combined design

—Gery Kissel, Engineering Specialist, Global Battery Systems, GM, and SAE J1772 Task Force Chairman

The original version of J1772 defined AC Level 1 and AC Level 2 charge levels and specified a conductive charge coupler and electrical interfaces for AC Level 1 and AC Level 2 charging.

The new revision incorporates DC charging where DC Level 1 and DC Level 2 charge levels, charge coupler and electrical interfaces are defined. The standard was developed in cooperation with the European automotive experts who also adopted and endorsed a combo strategy in their approach.

SAE charging configurations and ratings terminology. Click to enlarge.




Interesting updated standards for off-board DC, 500 Volt, 200 Amps , 100 Kw near future long range BEVs with 100+ KWh battery packs.

This may have to be updated again by 2020 or so when 200+ KWh, light weight battery packs reach the market place.


Temporarily splitting a 200 kWh battery pack into two 100 kWh units to allow charging with twin 100 KW chargers should not be much of a challenge.


What will happen with the tesla superchargers that have an incompatible different standard.

Im not interrested to buy but i will be interrested to see someone use it in 20 minutes or less if they can install one of this new updated fast charger near where i live. Im a retiree that goes to casinos, restaurants, bowlings, shopping malls, etc. Im currently looking for some other leisures and go seeing one of these chargers might be of interest, especially as it is outside and that will be a different leisure as only blogging.

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