tech

January 9, 2026

Is this the world’s first solid-state battery?

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Is this the world’s first solid-state battery?

TL;DR

  • Donut Lab claims their solid-state batteries are in production now, not years away.
  • These batteries offer 400 Wh/kg energy density, a 30% increase over current lithium-ion.
  • They can charge fully in as little as five minutes, with a claimed 100,000 charge cycles.
  • The batteries are thermally stable and require minimal cooling.
  • Donut Lab's CEO, Marko Lehtimaki, attributes their success to a small, agile engineering team.
  • The batteries are produced in Finland, with potential for U.S. expansion.

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