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The max regen on my Bolt is 70 kw. Max charge rate with a level three charger is 55 kw so regen is ~27% more. The Hummer is said to have a max charge rate of 350 kw so assuming the the same 27% delta we should expect a regen rate of up to 445kw? Has anyone read what the max regen is or experienced it for themselves?
 

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GMC Sierra, Bolt, Sky, Mach E
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Not likely to be that high. Remember the charging is done at 800V, normal operation is at 400V, and 350 kW charge is only going to occur at low SoC. It is more likely max regen will be around 200KW. The Bolt charges at less than 1C, for the 66 kWh battery the 70 kW regen is just above 1C, and is also limited if you are fully charged. Regen usually gets enabled around 95% SoC and using a high C rate at that SoC is not good for the battery.
 
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