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A comment on Volvo signals 'end of the solely combustion engine-powered car'. Parent comment

Re:Volvo signals 'end of the solely combustion engine-powere... by Gracana on Wednesday July 05, 2017 @11:26AM (#14703132)
Very close? There's no way you're losing anywhere near 2kW (7% loss in a 30kW charger) to cables and connectors.
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Re:Volvo signals 'end of the solely combustion engine-powere... by jbms on Wednesday July 19, 2017 @05:58AM (#14803134)
It's in the power conversion.

Go educate yourself on the efficiency of power supplies: https://www.extremetech.com/extreme/143029-empowered-can-hig...

Over 90% is amazing.

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Re:Volvo signals 'end of the solely combustion engine-powere... by Retric on Wednesday July 05, 2017 @11:58AM (#14703495)
~5+% in AC > DC is not that uncommon. Which is why wall warts get hot. But yea if this is just about replacing cables then that's poor.

PS: I do wonder about efficiency limits because transformers are effectively wireless power just at cm range.

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