Finnish battery maker Donut Lab, made some remarkable claims about its all-solid-state battery at the 2026 Consumer Electronic Show. This information has put the market into something of a tail spin, with some competitors suggesting these claims are overstated. We investigate what’s cooking at Donut Lab, but it’s up to you to decide.
What Donut Lab Says About Its Batteries
We did not attend the 2026 Consumer Electronic Show in Las Vegas. We rely on a report on the sodium-based battery from Interesting Engineering, that we consider a reliable source.
Certainly, solid-state battery chemistry represents the direction our industry is moving towards. Lithium is relatively scarce unlike sodium, plus all-solid-state means there is no liquid chemical in the electrolyte to burn.
Although we would not have expected 40 watt-hour-per-kilogram density and recharging in 10 minutes. Those claims hint that what’s cooking at Donut Lab could seriously challenge the dominance of the lithium-ion battery industry.
Especially as these all-solid-state, sodium-based batteries are far from prototypes. Donut Lab says they are production-ready, and good to go. The company has now promised to deliver evidence from an independent technical research center shortly.
Setting the Record Straight at Donut Lab
Donut Lab has promised to ‘move the debate from speculation to measurable proof’. “We are making this series [of videos]to put measurable evidence in public view,” CEO Marko Lehtimaki promised recently.
“That way, people can separate what’s asserted from what’s verified,” he added. “It’s a mind-blowingly big breakthrough that we’re bringing to the market.” Those certainly are strong words …
However, others in the battery industry are not convinced. Interesting Engineering refers to “weeks of skepticism from established battery manufacturers and industry analysts”. If only Donut Lab had provided proof at the 2026 Consumer Electronic Show.
We’ll wait and see what’s really cooking at Donut Lab. The company claims their battery charges in 10 minutes, and could do so 100,000 times. If the company verified this information, then, yes, this could be a break through, but what do you think?
More Information
Innovative Battery at CES 2026 Expo
Solid State Battery Standard From China
