We have a similar spoon for dog food. My wife wasn’t paying attention and it got ripped up in the garbage disposal several years ago. It is easily identified by its jagged edges.

I want to know how they are getting that much energy safely delivered to the battery. That’s probably 200+ kWh of energy getting dumped into the battery in 10 min. That’s going to cause a lot of heat and require a massive delivery system. Maybe a local capacitor that slow charged and then dumps all at once, but I didn’t see any details on the article.