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. Was Donut Lab’s battery actually just a supercapacitor in disguise?

Independent Test Results

The startup says no, and it has independent test results to prove it. The test was again conducted by state‑owned VTT, confirming that the device functions as a solid‑state battery rather than a supercapacitor.

Read the full story at The Verge.