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Citroen Ami E hackable you bet it is
SiliconWizard:
Well, probably you can make it half the weight if you buy Li-ion batteries on Aliexpress that claim 10x the real capacity for half the weight. Otherwise, that's probably going to be a tough call if you want any kind of safety.
Siwastaja:
--- Quote from: robint on February 29, 2024, 05:33:52 pm ---Lion batteries energy density ca 250Wh/kg so 5kWh is 20x ie 20kg
--- End quote ---
Most modern and energy dense li-ion cells are well over 300Wh/kg years ago already, but besides the fact they might use some less energy dense (and thus cheaper) technology node, such as your beloved LFP chemistry, also remember that "battery" is more than just the cells. It includes casing and some physical structure which adds strength. Final energy density for the whole pack varies wildly. And if you make a very lightweight pack with less physical protection, then it needs additional protection "outside" of the pack, which then again adds weight, so it's a zero sum game.
SiliconWizard:
Yep, and especially if said batteries were designed to be easily user-replaceable as easily as the OP mentions, they would require yet extra protection, and nasty connectors.
However hard some people want EVs to be completely as easy and practical to use as ICE, that's not going to happen anytime soon. At this point, it may even be a dead-end. Not that this is something most want to hear. Let's keep dreaming together (while kids are mining cobalt for us, but I'm digressing. Sorry.)
Siwastaja:
--- Quote from: SiliconWizard on March 01, 2024, 08:56:40 pm ---However hard some people want EVs to be completely as easy and practical to use as ICE, that's not going to happen anytime soon. At this point, it may even be a dead-end. Not that this is something most want to hear. Let's keep dreaming together (while kids are mining cobalt for us, but I'm digressing. Sorry.)
--- End quote ---
Well, to me my EV is as easy and practical than my ICE vehicle was, and it does not use any cobalt, so :-// But your mileage may vary. 10 years ago EV was suitable for maybe <5% use cases. Now probably for well over 50%, which can be seen from the fact that new cars being sold are nearly 50-50% EVs and ICEs and people generally are quite happy (albeit not everyone). All advances in battery energy density and cost have gone to increase battery capacity, which has more than doubled in less than 10 years which is quite remarkable, but that has also kept weight and cost high. EVs have finally become usable but are still expensive and heavy.
Battery swapping was dead from the start, it was never going to fly and finally people are starting to get it as batteries are getting better, cheaper and fast charging even faster. Tesla demonstrated automated battery swap just to silence idiots who say it "can't be done"; of course you can do it, just like you can put solar panels inside the roads. Whether it's practical or makes any sense is another question, pretty much solved a decade ago already. It's actually quite funny to see someone still dreaming about battery swap in 2024.
I mean, expecting the car industry to standardize to one battery form, size, shape, location in car and mounting mechanism, when e.g. the German car industry still can't even standardize a way to turn on a contactor on an existing plug standard to enable V2G/V2X "everyone" wants to have.
robint:
@siwastaja Battery swapping was dead from the start, it was never going to fly :-DD
Watch this space :popcorn:
I knew my idea would be stolen
This is EV for the city https://www.triggo.city/
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