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Donut Lab’s ‘Wonder’ Battery Draws Scrutiny Over Sparse Data

Independent tests so far cover charge speed, not life.

Overview

  • Donut Lab promotes a solid‑state battery that it says can fully charge in about five minutes and survive up to 100,000 cycles.
  • Reports cite Finland’s VTT as finding an 80% charge at roughly a 5C rate in about 9.5 minutes, with no published results on degradation or repeat runs.
  • The company withholds cell chemistry and full life‑cycle curves and instead posts weekly teaser results under a self‑mocking “I Donut believe” campaign.
  • Verge Motorcycles is taking orders for bikes advertised for Q4 2026 delivery with 20.2 kWh and 33.3 kWh packs whose electrochemistry is not disclosed.
  • Journalists note Donut Lab’s stated factory goals of 10 GWh next year and 100 GWh later and warn that delays or scaled‑back specs are likely without complete, reproducible data.