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"path": "/2026/03/23/donut-lab-solid-state-battery-5-tests-no-energy-density-cycle-life/",
"publishedAt": "2026-03-23T14:01:20.000Z",
"site": "https://electrek.co",
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"textContent": "Donut Lab has now released five independent test reports from Finland’s VTT Technical Research Centre on its solid-state battery — and not a single one addresses the two claims that actually matter: the 400 Wh/kg energy density and the 100,000-cycle life.\n\nThe Q1 2026 deadline that Donut Lab set for delivering production batteries inside Verge Motorcycles is eight days away. The latest report, a cycling test dated March 13, adds another data point — but the overall picture remains unchanged.\n\nmore…",
"title": "Donut Lab solid-state battery: 5 independent tests in, still no energy density or cycle life data"
}