Categories Articles Donut Lab says latest test proves its solid-state battery isn’t a supercapacitor. Post author By crystalg Post date March 9, 2026 The Verge Tags Battery, Donut, Isn't, latest, Proves, Says, solidstate, supercapacitor, test ← I’ve been to all 63 major US national parks. There are 6 I always tell people to visit in the spring. → Are You Creating Value — or Drag? These Are the Hard Truths of Leadership