• oldfart@lemm.ee
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    2 months ago

    It’s not, if you charge any capacity with 1C, it will take an hour. Looks like they achieved stable charging at over 4C (charging current in amperes 4x larger than stated capacity in amp-hours).

    EDIT: C is not Coulomb in this case

        • AwesomeLowlander@sh.itjust.works
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          2 months ago

          There are tons of technologies that are inherently unscalable. Or won’t be for another 50 years. Commercial unviability is one thing, but physic limitations are another matter.

          • john89@lemmy.ca
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            2 months ago

            True, but that doesn’t mean this is one of them.

            That said, I think salt batteries will eclipse these.

    • AHemlocksLie@lemmy.zip
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      2 months ago

      A Coulomb is basically a number of electrons, so it still very much depends on capacity. The only way it could avoid capacity dependence is if the amperage varied depending on total available uncharged capacity. That in itself is unlikely because the wires that transmit the electricity can only handle so many amps before getting too hot and melting apart, so any charging system must necessarily be constructed with intended charging capacity and rate in mind from the beginning.

      • oldfart@lemm.ee
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        2 months ago

        What solbear said. I edited my post to clarify i did not mean the SI unit.