If you've been following the Donut Labs Solid State battery claims, you may already know they're hard to believe.
With the new test results from independent VTT labs, there is reason to believe it's a fraud and the cell is simply Lithium Nickel Manganese Cobalt (NMC) being charged at an extreme 11C rate causing all the heat you would expect from that.

Great episode on the battery podcast "Geladen" about the Donutlabs solid state battery.
Apparently the original producing manufacturer is located in Germany and has experience in screen printing. There might be some truth to (part of the) original claims. But for now I'd still stay sceptical.
Great expert on the show, though!
Full episode (in German)
https://youtu.be/dk-YsWXVJg0?si=4NC-S4HREcDVuzTZ

L’autre jour, @PierreCol attirait mon attention sur la #batterie solide de #DonutLabs, sacrément intéressante.
L’article qui suit est assez superficiel mais il semble que les acteurs majeurs du marché aient des doutes sur la réalité du produit. J’espère que leur batterie existe et tient ses promesses, pour la suite du #VehiculeElectrique.
Some small details in this Finnish article about #NordicNano and #DonutLabs (and their claimed #solidStateBattery):
Here the Nordic Nano boss seems to be stating that the battery being discussed is not a super capacitor.
The #DonutLabs CEO posted on one Facebook conversation to say that third party tests of their #solidStateBattery will be published in a few weeks.
I still can’t make head or tails of this announcement. There is some speculation it’s a capacitor. I mean, more power to them if it is (kind of weird some say that as criticism), but capacitors have had substantially lower energy density.
Also capacity drain energy quite quickly.
A platform of solid state battery tech coming out of stealth in Finland by #donutlabs #finland #suomi #solidstatebattery
Congratulations to the team working on saving our planet. This could transform the world as we know it.
