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Samsung’s 20-year-life EV battery runs 600 miles on 9-minute charge
(interestingengineering.com)
This is a most excellent place for technology news and articles.
How viable would something like this be for powering a home? Solar panels+this?
Not very. There's a different sodium based battery being designed for home storage. Not nearly as energy dense, but will last a very long time, can be left outside the house, and uses cheap components (no lithium or other rare metals).
That's the battery you'll want.