Donut Lab solid-state battery: 5 independent tests in, still no energy density or cycle life data
AI Analysis
Summary
<div class="feat-image"><img src="https://electrek.co/wp-content/uploads/sites/3/2026/02/donut_2x1.png?w=1600" /></div><p>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.</p> <p>The 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.</p> <a class="more-link" href="https://electrek.co/2026/03/23/donut-lab-solid-state-battery-5-tests-no-energy-density-cycle-life/#more-460714">more…</a>
<div class="feat-image"><img src="https://electrek.co/wp-content/uploads/sites/3/2026/02/donut_2x1.png?w=1600" /></div><p>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.</p>
<p>The 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.</p>
<a class="more-link" href="https://electrek.co/2026/03/23/donut-lab-solid-state-battery-5-tests-no-energy-density-cycle-life/#more-460714">more…</a>