If it is true, then that is amazing. Of course to have that inside our devices would be even better.
Tell you what a Fusion 5000 which recharges your phone in 18 minutes, then recharges itself in 18 minutes, then that would make me impressed.
Assuming (as they do not state) 3.7V so is a 18.5Wh capacity, at 45W which is the maximum stated ingest power, you get 24 minutes, not 18 minutes.
So that "as little as" 18 minutes, I think it lacks some clarity of what % empty to % full. Currently a lot of fast charging technology is claiming to a less than full fast charge as it's easier to charge faster from empty than it is to full.