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A comment on Ultralight lithium-sulfur batteries for electric airplanes. Parent comment

Re:Ultralight lithium-sulfur batteries for electric airplanes by rootusrootus on Wednesday August 19, 2020 @03:43PM (#24215287)
> the equivalent ICE would be 500+

It's not quite that heavy. An LT1 makes 500 horsepower and weighs less than 500 pounds.

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Re:Ultralight lithium-sulfur batteries for electric airplanes by phonon on Wednesday August 19, 2020 @11:09PM (#24219474)
It definitely varies, though under 400 lbs would be tough to find....it takes a significant amount of effort to make a light, high power engine. Electric motors OTOH are well understood, and relatively easily engineered.

The point still stands though. You're savings a few hundred pounds compared to an ICE, but you're losing more than in battery weight. An x2 (or maybe even x1.5) increase in battery density, and a (ground up) electric vehicle will almost always be lighter than a similar conventional car with a full tank of gas.

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Re:Ultralight lithium-sulfur batteries for electric airplanes by samatman on Wednesday August 19, 2020 @06:54PM (#24217804)
Are you including the transmission?

Teslas have a transmission, but it's not in the same league of complexity or weight.

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