Donut Lab’s ‘Five-Minute’ Non‑Lithium Cell Faces Fraud Claim From Svolt as Market Waits for March Deliveries

Overview

• The Finnish startup claims a production-ready cell with roughly 400 Wh/kg energy density, up to 100,000 charge cycles, and the ability to recharge in about five minutes.
• Svolt CEO Yang Hongxin labeled the announcement a fraud, arguing the touted performance metrics contradict one another and asserting such a battery does not exist.
• Battery researchers, including Dr. Joachim Sann, say observed voltage behavior and extreme temperature claims suggest the device could be a supercapacitor or a hybrid rather than a conventional battery.
• Donut Lab has released no chemistry details or independent test data and showed a proof-of-concept in a Verge Motorcycles electric bike, with the companies closely linked and no disclosed factory footprint.
• Industry roadmaps from established manufacturers indicate semi-solid or solid-state integrations beginning between 2026 and 2028, with some targets around 2030, underscoring the gap between Donut Lab’s timeline and peers’ expectations.