this post was submitted on 19 Sep 2024
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366
Electric Boat Costs 40–50€ to Cross Baltic Sea, vs 750€ Refueling Gas Boat (cleantechnica.com)
submitted 1 month ago by [email protected] to c/[email protected]
40 comments fedilink hide all child comments
 

While the much lower fuel cost has to be a bit of a shocker (we all know EVs are more efficient and cheaper to operate, but not 95% cheaper), the bigger surprise has to be how much more convenient the electric boat was in a certain key way. “We actually had range anxiety, but not for the Candela. The irony is that the photographer’s gasoline-powered chase boat had to refuel six times during the trip, while we only charged three times,” said Gustav Hasselskog.

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[–] [email protected] 11 points 1 month ago (3 children)

213kWh feels like quite a lot of juice. Admittedly, I usually don't go at planing speeds.

I have an 80Ah lead-acid battery to power the electric trolling motor on my inflatable dinghy. That's 80A*12V = 0.96kWh. That gives me 5-10Nm range depending on speed. My dinghy would sink with 213kWh on board.

My 7 tonne sailboat uses ~2l/h of diesel at twice the speed. 213kWh of lead-acid would double the weight.

[–] [email protected] 8 points 1 month ago (1 children)

I've dealt with storing energy from solar for a long time now, and from the deepest part of my heart: fuck lead acid batteries. The only thing they have going for them is being able to charge below freezing. But they're shit in every other way, especially weight.

[–] [email protected] 6 points 1 month ago (1 children)

They have one other advantage: unit price. But Lithium is rapidly catching up, and is already better if you calculate price per lifetime charge cycle.

[–] [email protected] 2 points 1 month ago (1 children)

Recyclability, too

[–] [email protected] 5 points 1 month ago (1 children)

Replace the keel with lead acid batteries

[–] [email protected] 3 points 1 month ago (1 children)

That's actually kind of genius. It's even made of lead!

[–] [email protected] 2 points 1 month ago

Just don’t run a shore on anything

[–] [email protected] 5 points 1 month ago

This says it uses the battery from a polestar. So it's not lead acid but lithium. And 79kWh.