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Re:Standard Thermal: Energy Storage 500x Cheaper Than Batteries by avalys on Monday August 25, 2025 @10:18AM (#45014139)
I’d love to buy a 20 kWh battery for under $1k. Can you give me a link to what you’re thinking of?
Re:Standard Thermal: Energy Storage 500x Cheaper Than Batteries by IshKebab on Monday August 25, 2025 @11:31AM (#45014951)
Sorry my wording was ambiguous; when I said "that size" I meant 2.7 kWh, which is what the hypothetical concrete blocks might provide.

Nevertheless, you can get a 16 kWh battery (which is enough for most days of a typical house) for only £2k, which is kind of insane really: https://www.fogstar.co.uk/products/fogstar-energy-16kwh-48v-...

Re:Standard Thermal: Energy Storage 500x Cheaper Than Batteries by jmpman on Monday August 25, 2025 @10:29AM (#45014253)
People have been able to get their Tesla Model 3 batteries (75kWh iirc) replaced with used battery packs for around $5k, so quite close to what you’re asking.
Re:Standard Thermal: Energy Storage 500x Cheaper Than Batteries by lawlessone on Monday August 25, 2025 @03:26PM (#45017880)
Do they get much for the old used battery? the materials are still lithium etc are still inside it, they're just no longer in the right places..