• Valmond@lemmy.world
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    21 hours ago

    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
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      11 hours ago

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