A 150-year-old geometry rule has been overturned after mathematicians found two different torus surfaces with identical ...

Donut Lab, the Finnish solid-state battery startup that has faced intense skepticism since its CES 2026 debut, released its first pack-level charging test results today. The 18 kWh battery pack ...

There was speculation that Donut Lab’s battery was able to discharge energy so quickly because it was a supercapacitor in disguise. So the startup set out to disprove that claim. There was speculation ...

“It’s an empty shell and is in amazing condition,” she said. “Our employees are so excited, and the most exciting thing for me is that we can improve our (production) line.” Rienerth said the 24-hour, ...

The Finnish startup’s battery not only survived extreme heat conditions, it actually gained capacity. The Finnish startup’s battery not only survived extreme heat conditions, it actually gained ...

Donut Lab has released a second set of independent test results for its controversial solid-state battery — this time proving the cell can discharge at extreme temperatures up to 100°C and actually ...

The Donut Lab battery announced at CES may be a real energy storage device based on pulling together some almost obscure details. The team of people involved on the research side, led by an Indian PhD ...

The world’s first solid-state battery, announced by Donut Lab, has sparked interest for its potential advancements over traditional lithium-ion technology. While marketed as a breakthrough in energy ...

The battery world is hardly lacking in ambition, but it remains controlled by a tight circle of Chinese and Korean heavyweights. When Finnish startup Donut Lab claimed earlier this year that it had ...

Independent lab testing of a Donut Lab “Solid-State Battery” cell by Finland’s VTT shows it’s indistinguishable from the NMC cell it may very well be. Donut Lab has allegedly delivered a Solid-State ...

Donut Lab says it will release independent lab tests on its production-ready solid-state batteries over the next several weeks. Skepticism abounds after the company announced at CES that it had a ...

Dunkin’ Donuts has plans to make a much-anticipated return to South Dakota, and Aberdeen is the chosen spot. Earlier this month, Aberdeen Mayor Travis Schaunaman excitedly announced on Facebook the ...