Donut batteries - really a solid state battery with no lithium?

For weeks I have been following the 2 bit Da Vinci videos on the Donut batteries recently announced. It really looks as if this is real.

I truly think we are on the edge of a real breakthough at last.

Sold state battery hype?

 At the moment there is a lot of doubt about the claims of a small company revealing a solid state battery at CES that could revolutionise transport.  

This one of many videos that expresses doubts. I guess we will have to wait and see. 

It is true that companies have invested billions and are amazed if a small company really has "cracked it". Time will tell if this really is a breakthrough or just hype.

This was obviously created with the help of AI.