Donut Lab’s ‘miracle’ solid-state battery is fraud, says insider, Donut Lab denies

Donut Lab’s miraculous solid state battery, promising energy density, charging and durability numbers unseen by the industry, has been subject to a criminal complaint in Finland from an insider who says it doesn’t live up to the public promises Donut Lab has made.

But the company says that the insider didn’t work on the battery project, and denies any fraudulent behavior.

Solid state batteries have long been promised as the next evolution of battery technology, using a solid electrolyte for theoretically much higher energy density. Despite these many promises over more than a decade, none have yet turned out to be manufacturable at scale and to offer better overall performance than current liquid/gel electrolyte batteries.

But early this year, Finnish company Donut Lab shocked the industry with claims of a 400Wh/kg, 100k cycle life, 5-minute-charging solid state battery that it claimed was ready for production in Q1.