Donut Lab’s −30 °C Battery Claim Meets a +38 °C Self-Heating Reality
Donut Lab, the Finnish company behind the CES-January solid-state battery billed as first for production vehicles, published a VTT report on 21 October on a −30 °C test. The headline: 93% energy retention. The figure is real; the document — confidential per VTT, released by Donut Lab — is complete, signed and legible. Page 10: … Read more