• August27th
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    2 months ago

    explosive hazard

    Can you elaborate on that? I was just reading the data sheet for these batteries, and these are tested with a ballistic penetration test, resulting in no fire.

    I’m presuming this concern is from watching videos of elemental sodium reacting with water, which stands to reason, but I’ve not heard of exploding batteries

      • August27th
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        2 months ago

        Interesting. I wonder how that compares to a similar Li-ion cell. Also it’s a shame there wasn’t a close-up on the markings of the battery in that video to know what it is exactly. I don’t imagine all cells are equal.

        The battery packs from the article, for instance, are not constructed from cylindrical cells, but from large thin and flat square cells. The cathode material appears to be unique as well, as far as I can tell; who knows what’s in those blue cylindrical cells.

        • TheObviousSolution@lemm.ee
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          2 months ago

          You can look at other videos in his channel that answer your doubts. 18650 battery cells are usually connected together into battery packs and BMS, and the industrial process is pretty standardized. Just like Li-ion you can have different cell structures, but the inside remains the same.

        • TheObviousSolution@lemm.ee
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          2 months ago

          What were you expecting? It’s literally an explosion. Add a few thousand of them in row in EV battery style if you want a bigger explosion.

    • AdamEatsAss@lemmy.world
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      2 months ago

      No fire could have occured during the penetration test because the resulting explosion removed all oxygen from the surrounding environment. -s