WTH is your strawman here. Please try to understand what i wrote instead of arguing against something i did not say. I did not say anything about vehicles. I agree that in the case of cars and their batteries kWh related to their distance they might be able to travel, kWh does not make sense. But charging money by the kWh is common. So if you charge your 1kWh car battery (or whatever) you know a 1kW supply needs 1hour to fill the battery. And I know how to convert units.