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MrDRMorgan, thanks for sharing your experience.


I'm 100% sure the car had finished charging, yet was still drawing 6 amps / 720 watts of power...at least according to the status light on the dash and the Kill-A-Watt meter.


Do you think the inefficiency is because the car is reserving amps for ongoing battery management and only then do the rest of the available amps go to charging? That's my leading theory.


I knew the charging process wasn't 100% efficient, but the battery management system is looking to me like a significant and unexpected cost of operating the car.


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