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Yep, it’s fast: Donut Lab’s solid-state battery gets its first test

Finnish startup Donut Lab has released the first independent test results for its production-ready, solid-state battery. Conducted by the state-owned VTT Technical Research Centre of Finland, the evaluation focused on charging speed and the battery's thermal behavior. This disclosure aims to address skepticism surrounding Donut Lab's claims of a major battery breakthrough.

PublishedFebruary 24, 2026
Reading Time1 min
Yep, it’s fast: Donut Lab’s solid-state battery gets its first test

Yep, it's fast: Donut Lab's solid-state battery gets its first test result\

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Key takeaways\

  • Finnish startup Donut Lab has released the initial independent test results for its production-ready, solid-state battery.\
  • The testing, conducted by the state-owned VTT Technical Research Centre of Finland, focused on evaluating charging speed and the battery pack's thermal behavior.\
  • This public disclosure aims to address the considerable skepticism Donut Lab has faced regarding its claims of a major battery breakthrough and fast-charging capabilities at scale.\
  • Specific quantitative results from the test, such as exact charging times or thermal performance metrics, were not detailed in the initial announcement.
    \

What happened\

Finnish startup Donut Lab has unveiled the first independent test results for its solid-state battery, a development announced earlier this year as a

#Donut Lab#solid-state battery#battery technology#fast charging#VTT Technical Research Centre

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