Yes I believe your math is wrong unless you are seeing something I don't. Usually EVs only use a couple hundred wh/mile. The battery being discussed is talking about 320 kilometers using a 32kwh battery. That would be about 100wh/km or 160whr/mile. Charging is 32kwh in 6 minutes or about 5kwh/min. I didn't see the voltage level you spoke of so I don't know where you got that information.
JJ
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