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by jacknews 2070 days ago
Yes, I question the physics. The last example, where they use multiple fire-extinguishers as the storage vessel appears to me to be able to store far more energy per volume than the other examples cited.

If these numbers are accurate, then such a system seems quite feasible for domestic use. The others, much less so, as the storage vessels to store just a few KW/h are so massive.