Well, that's pleasantly surprising if true. I was expecting the standard caveat of it only being in research so far.
Over 90% of all the published breakthroughs are fantasy.
Seems like having a technology that crosses the "publish revolutionary battery tech in the press" hurdle is dramatically lower than the "actually make a battery at product scale for a profit" hurdle, and not all of the former will make the latter. Here's hoping these folks do what they say on their production part, because I'm pretty desensitized to the first part of their claim.
That is the entire reason for Popular Science magazine it did for decades. Amazing things that never were built some were yes but many were not. It's fun to read about it but I can see how it could be frustrating too.