Donut Lab to release test results after battery claims spark debate

Finnish startup Donut Lab plans to release independent test data supporting its all-solid-state battery technology following widespread skepticism at the 2026 Consumer Electronics Show (CES). The company will publish initial results starting February 23 through a video series on a dedicated website, idonutbelieve.com, aiming to shift the conversation from speculation to verifiable evidence. Donut Lab claims its battery, independently tested by Finland’s VTT Technical Research Centre, offers groundbreaking performance metrics, including an energy density of 400 watt-hours per kilogram—significantly higher than current lithium-ion batteries—and rapid charging under 10 minutes with a lifespan of 100,000 cycles. Despite these bold claims, Donut Lab faced criticism from established battery manufacturers and industry analysts who questioned the lack of live demonstrations, patent disclosures, or peer-reviewed research at CES. The company’s CEO, Marko Lehtimaki, acknowledged the challenges posed by skepticism, especially in securing funding for scaling production. Donut Lab also intends to install