Finnish startup Donut Lab released an Intertek lab report claiming its solid-state battery contains only 3.4 ppm of lithium and 632 ppm of sodium. The company argues this proves its technology is neither lithium-ion nor sodium-ion based.
The Intertek analysis involved 0.5 g of material from anode, cathode, and current collector components. The report did not test for other elements like potassium, zinc, or magnesium, and the samples were delivered to the lab by Donut Lab in a disassembled state.
Independent researchers, including those from Ziroth, previously suggested the cell behaved like a high-nickel lithium-ion battery. VTT testing recorded an energy density of 409.3 Wh/kg for the V1.5 cell, which operates within a voltage window typical for lithium-ion chemistry.
Donut Lab previously claimed at CES in January that its battery was ready for OEM vehicle manufacturing, with Verge motorcycles expected to ship in Q1 2026. As of late September, no production vehicles using this battery are on the road.
