this post was submitted on 02 Oct 2024
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I’m very hopeful for flow batteries to improve to a point where they can be very cheaply installed at scale. Seems much better environmentally than lithium ion, and the drawbacks matter less for grid storage.
Flow battery drawbacks aren't drawbacks for home use, let alone grid scale.
Absolutely. Home use is what got me interested in them in the first place. I love to DIY stuff (recently I’ve been building planar speakers from scratch) and had the crazy idea of building one for my house.
What are the drawbacks?
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.