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  "path": "/2026/02/23/donut-lab-vtt-solid-state-battery-test-results-fast-charging/",
  "publishedAt": "2026-02-23T17:23:23.000Z",
  "site": "https://electrek.co",
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  "textContent": "Donut Lab has released the first independent test results for its controversial solid-state battery, and the data confirms at least one headline claim: the cell charged from 0 to 80% in just 4.5 minutes at an extreme 11C rate.\n\nIt doesn’t blow up, but it gets pretty damn hot.\n\nThe results come from Finland’s state-owned VTT Technical Research Centre, one of Europe’s leading research organizations. But the report only covers charging performance — leaving Donut Lab’s most extraordinary claims completely unverified.\n\nmore…",
  "title": "Donut Lab’s ‘miracle’ solid-state battery confirms 0-80% charge in 4.5 min — but there’s a catch"
}