"Many have said that the specifications of Donut battery can only be achieved with supercapacitor. Well, today we are proving that is not the case. The test, which was conducted by state-owned VTT Technical Research Centre of Finland, evaluates its charge retention over an extended idle period."
"When Donut Lab first announced its solid-state battery earlier this year, there was some speculation around whether the Finnish startup had actually produced a supercapacitor, which is a much shorter-term form of electrical storage. Supercapacitors can charge and discharge quickly, similar to Donut Lab's claimed solid-state battery. But supercapacitors are totally different from batteries in terms of energy storage capacity and long-term use."
Donut Lab, a Finnish startup, announced a solid-state battery earlier this year that sparked speculation about whether it was actually a supercapacitor due to its rapid charging and discharging capabilities. Supercapacitors and batteries differ significantly in energy storage capacity and long-term performance. To address these concerns, Donut Lab commissioned independent testing by VTT Technical Research Centre of Finland, marking the third in a series of independent examinations. The test evaluated charge retention during an extended idle period, demonstrating that the battery maintains its charge over time, distinguishing it from supercapacitors which cannot sustain long-term energy storage.
Read at The Verge
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