Futurology

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submitted 20 hours ago by Lugh to c/futurology

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[–] Valmond@lemmy.world 5 points 18 hours ago (2 children)

So if you can charge them with "free" (that would be spoiled otherwise) energy, at say 0.20€/kWh it'd take 575 charges to pay back.

I wonder how many cycles they hold...

[–] wizzor@sopuli.xyz 1 points 8 hours ago

Depends on the depth of discharge, but several thousand. You do need to account for round trip efficiency.

[–] Farvana@lemmygrad.ml 1 points 13 hours ago

Generally, 800-1000 is the market minimum, with 2000 being very common