While I know that some of the earliest automobiles were electric vehicles, I still did a double-take when I saw references to EVs in this 1918 ad for engine oil. ⁨⁩ ⁨⁩ ⁨

You remind me of this short film - 1943, battery swap for electric taxis, Barcelona.

Battery swap seems to me a great solution to charge times and battery life.

Perhaps see also electric taxis in NY, in 1895


@EdS @kyle Battery swap for electric vehicles is even older than I realized! Makes total sense, but I wasn't aware. And yeah, I agree battery swap (implying short term leasing of batteries instead of owning) seems like it should be a great idea.

@cstanhope @EdS And there are plenty of examples of similar practices in other industries.

For instance, when I wanted CO2 for my beer keg setup, I bought an empty canister and each time I need a refill I turn in one canister and get a pre-filled one in return.

@cstanhope @EdS @kyle Charge rates should soon be fast enough that swapping isn't necessary for speed. But obviously that requires the ability to deliver lots of power to wherever someone needs to charge. Battery swapping could spread out the time, or it could be used to allow high efficiency or highs specific energy or cheaper or more environmentally friendly battery chemistries that are not rechargeable or take a long time to charge.

Another option is to have large stationary batteries such as flow batteries or used car batteries on site to help even out the load.

In a densely-populated country battery-swapping could be a route to smaller lighter batteries - range not being an issue - and that would save energy and resources.

Agreed, having swap stations manage their battery stocks and charging schedules would help with the grid load.

In fact those stations could help stabilise the grid, by dint of having those batteries.

@freakazoid @cstanhope @kyle

@freakazoid @cstanhope @EdS There is also the issue of compatibility. I think about the shelves full of different lead-acid batteries for traditional ICE cars and how challenging it is to get charging *plugs* to be consistent, and conclude battery swap systems would require far more cooperation between competitors than they will tolerate. It, like charging ports, would have to be part of a government mandate.

@freakazoid @EdS @kyle I'm the kind of person who owns vehicles for 10+ years, so I'm also thinking about that expensive battery replacement that seems to be in store for electric vehicles after 5 to 7 years. No to mention degrading performance over time before that. Not having to own the batteries would seem to mitigate those issues, but perhaps that's just pushing the costs around.

Of course, I'd also dump my cars if I could. So maybe I should focus my energies on that instead. 🤔

I think it helps if capital items like batteries are owned en masse, not by individuals - there are economies of scale, and it could help with recycling of materials too.

I think the same might be true of cars, although I've never, so far, leased one.

But my car is 10+ years old and I hope it'll be the last one I own.

@cstanhope @freakazoid @kyle

Very strange looking at pictures of really old EVs. I wouldn't have thought that the late 1800s would have any!

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