In other solid state news
electrek.co
We have been covering Donut Lab’s claims with skepticism since the company shocked the battery world at CES 2026 with claims of a 400 Wh/kg, 100,000-cycle, 5-minute-charging solid-state battery. In January, I interviewed CEO Marko Lehtimäki and told him directly that he was either going to lose all his credibility or revolutionize the world. It looks like it was the former.
Donut Lab's 'solid-state' battery exposed as regular li-ion in damning investigation
A detailed investigation confirms Donut Lab's 'solid-state' battery is actually a lithium-ion cell, with over 20 experts and electrochemical data proving the claims were false.
electrek.co
We have been covering Donut Lab’s claims with skepticism since the company shocked the battery world at CES 2026 with claims of a 400 Wh/kg, 100,000-cycle, 5-minute-charging solid-state battery. In January, I interviewed CEO Marko Lehtimäki and told him directly that he was either going to lose all his credibility or revolutionize the world. It looks like it was the former.



