| ▲ | dheera 2 days ago | ||||||||||||||||||||||
I feel like for home battery backup there needs to be some kind of lower energy density solution that has zero fire risk. Weight is not a factor for home energy storage, there is no need for lithium cells. | |||||||||||||||||||||||
| ▲ | ianburrell 2 days ago | parent | next [-] | ||||||||||||||||||||||
Currently, that is LiFePO4. It is cheaper than LiPo packs used in electronics, half the energy density, twice as many charge cycles, and doesn't burst into flame. The lithium is flammable but requires external ignition. Larger batteries, including some electric cars, have switched. | |||||||||||||||||||||||
| ▲ | bmicraft 2 days ago | parent | prev | next [-] | ||||||||||||||||||||||
LiFePO₄ (LFP) is overwhelmingly safe and cheap. Lithium isn't the problem here exactly. | |||||||||||||||||||||||
| ▲ | etskinner 2 days ago | parent | prev | next [-] | ||||||||||||||||||||||
It seems unlikely that there's any practical chemical batteries with 0 fire risk. But I do think there should be home energy storage that doesn't involve chemical batteries. Where are all the pumped hydro, flywheels, and compressed air storage for consumer use? | |||||||||||||||||||||||
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| ▲ | pjc50 2 days ago | parent | prev | next [-] | ||||||||||||||||||||||
LFP is the present solution, but sodium ion is the next step. Given the abundance of sodium in the sea there should never be any problem sourcing it. https://cambridgerenewables.co.uk/product/eleven-energy-4-5-... | |||||||||||||||||||||||
| ▲ | tinbucket 2 days ago | parent | prev [-] | ||||||||||||||||||||||
Weight is not a factor for home energy storage, there is no need for lithium cells. That depends on your living situation. I live in a third-floor apartment, so weight is very definitely a factor. | |||||||||||||||||||||||
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