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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.
Yes they have. Not from this article, though. Same for Toyota. They announced a 2027(likely) solid state battery EV months ago.
As for "samsung didn't claim this", they put the battery on display at the trade show in Seoul, and it's been reported by tons of outlets. Samsung has very clearly announced it.