1690
oh no! think of the stock market!
(lemmy.world)
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Too heavy, and too big. This is compared to an automotive battery though. They take up the size of something like a fridge. They are also expensive but prices are bound to come down once production is up. But they have claimed zero capacity degradation for decades they say. And the liquid inside is a fire retardant, so if you puncture a battery that would actually put out the fire.
There are number of videos on YouTube, it's an interesting technology.