Basically, VTT hooked up Donut Lab’s to a battery tester and left it idle for 10 days, while measuring the voltage every 10 seconds. According to the results, the cell demonstrated high stability, ...
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Donut Lab’s solid-state battery keeps 97.7% charge after 10 days in third test
Finnish startup Donut Lab has just released the third independent test of its solid-state ...
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