Donut Lab says latest test proves its solid-state battery isn’t a supercapacitor.
Source: The Verge
Background
When Donut Lab first announced its solid‑state battery earlier this year, there was speculation about whether the Finnish startup had actually produced a supercapacitor—a much shorter‑term form of electrical storage. Supercapacitors can charge and discharge quickly, similar to Donut Lab’s claimed solid‑state battery, but they differ from batteries in terms of energy‑storage capacity and long‑term use.
Independent Test Results
The startup says its device is not a supercapacitor, and it has independent test results to prove it. The test was again conducted by state‑owned VTT, confirming that the technology behaves as a solid‑state battery rather than a supercapacitor.
Conclusion
Donut Lab maintains that its solid‑state battery is a genuine battery, not a disguised supercapacitor, and the latest independent testing supports this claim.