Donut Lab Battery Mystery Continues - CleanTechnica

The article discusses ongoing skepticism and controversy surrounding Donut Lab’s announcement of its first production solid-state battery, initially revealed at CES. Despite early doubts about the battery’s existence and performance, Donut Lab has released a series of weekly third-party test results to provide measurable evidence and counter misinformation. The company’s strategy was to allow doubters to voice their skepticism first, then systematically present data to challenge false claims and regain control of the narrative. Donut Lab’s founder, Marko Lehtimäki, highlighted that powerful legacy interests in the energy and battery sectors may be motivated to discredit disruptive technologies like theirs, complicating public acceptance and funding efforts. The testing series has demonstrated several key performance attributes of the battery, including rapid charging at 11C (0–80% charge in 4.5 minutes), stable operation at 100°C, and characteristics consistent with a solid-state battery rather than a lithium-ion liquid electrolyte or supercapacitor. For example, a packaging failure during testing indirectly