The thing is when gasoline is used to power a car about 80% of the energy is loss to heat and only about 20% is used to actually move the car on average. It’s worse when you are doing acceleration and better when cruising at a steady speed on a level surface.
Yeah, so you have to divide it by a factor of 5. Which still makes gasoline roughly 5 times as energy dense than this prototype battery, instead of 25 times.
The thing is when gasoline is used to power a car about 80% of the energy is loss to heat and only about 20% is used to actually move the car on average. It’s worse when you are doing acceleration and better when cruising at a steady speed on a level surface.
In general efficiency, modern cars are a lot closer to 40% than 20. E.g. a Prius engine is at 38,5%.
It was interesting to see F1 engines go past the 50% mark, a few years back.
Yeah, so you have to divide it by a factor of 5. Which still makes gasoline roughly 5 times as energy dense than this prototype battery, instead of 25 times.