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CHAdeMO 3.0 released; first publication of new plug harmonized with China’s GB/T

CHAdeMO Association has released the latest CHAdeMO protocol (CHAdeMO 3.0) to its Regular members, specifying the requirements for designing the next-generation CHAdeMO chargers using the new plug harmonized with China’s GB/T protocol, allowing for maximum current of 600A.

CHAdeMO 3.0 is the first publication of the next-generation ultra-high-power charging standard, being co-developed by China Electricity Council (CEC) and CHAdeMO Association with the working name “ChaoJi.” The Chinese version, operating under the GB/T communication protocol, is also planned to be released next year.

This latest version of the CHAdeMO protocol enables DC charging with power above 500kW (maximum current 600A), while ensuring the connector to be light and compact with a smaller diameter cable, thanks to the liquid-cooling technology as well as to the removal of locking mechanism from the connector to the vehicle side.

Backward compatibility of the CHAdeMO 3.0-compliant vehicles with the existing DC fast charging standards (CHAdeMO, GB/T, and possibly CCS) is ensured; in other words, today’s CHAdeMO chargers can feed power to current EVs as well as future EVs via an adapter or with a multi-standard charger.

Started as a bi-lateral project, ChaoJi has developed into an international collaboration forum, mobilizing expertise and market experience of key players from Europe, Asia, North America, and Oceania. India is expected to join the team sometime soon, and governments and companies form South Korea and South-eastern Asian countries have also expressed their strong interests.

Japan and China have agreed to continue working together on the technical development and to promote this next-generation charging technology through further technical demonstration events and the trial deployment of the new chargers.

The testing requirements for CHAdeMO 3.0 specification are expected to be issued within a year. The first ChaoJi EVs will be likely commercial vehicles and expected to be launched in the market as early as 2021, followed by other types of vehicles including passenger EVs.

CHAdeMO is a DC charging protocol currently enabling EV charging with power from 6kW to 400kW with 900kW in preparation. According to, there were 922,728 CHAdeMO-equipped vehicles in the world at the end of 2019.



What's most upsetting is that there isn't 1 world standard.

Ideally, we'd all use something like the Euro 3-phase connector, with optional DC terminals for HVDC charging.

Then add a simple CAN bus to the connector, just like CHAdeMO & Tesla. Not just for HVDC, but for all charging. the Low-Level Signalling standard was not a bad idea years ago, but is completely inadequate for today and creates yet another layer of unnecessary abstraction.

(Let's be honest, anyone with an Arduino and a MCP2515 & MCP2551 can build a CAN-enabled charger)

The short-sighted decisions from 8-10 years ago should have been, and should be, corrected.

Using Powerline Comms like CCS uses is pointless and complex, we can do the same over simple CAN communications.

Rather similar to how I wish the whole world got together after WW2 and decided on one AC frequency, at 250VAC.


It would be nice to have a standard.

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