Donut Lab's solid-state battery claims face scrutiny in new video series
Finnish company Donut Lab releases videos on its solid-state battery with 400 Wh/kg density and fast charging, but experts question lack of official data.
Finnish company Donut Lab announced it will begin publishing a series of videos on February 20th to demonstrate the operation of its solid-state battery. Previously, the company reported an energy density of 400 Wh/kg, charging in under 10 minutes, and a lifespan of up to 100,000 cycles.
According to the developers, delays in publishing independent tests were caused by external factors. Instead of a traditional technical report, the company opted for a phased video presentation format, where it plans to showcase the battery's key characteristics.
This strategy has raised the most questions. In the electric vehicle industry, such claims are typically backed by official laboratory documents with precise data on density, charging speed, and degradation. The reported 400 Wh/kg figure significantly exceeds the parameters of most production automotive solutions expected in 2026, which fuels skepticism.
Additional doubts arise from the claimed production capacity of 1 GWh, given the relatively small delivery volumes of Verge motorcycles. Some experts believe that if a real technological breakthrough existed, publishing straightforward numbers would be more convincing than any media campaign.