A Finnish startup claims to have perfected a revolutionary new battery. Whether the hype is to be believed, solid-state technology is coming—and it’s a potential disruptor for the entire EV industry.

Meet Donut Lab, a Finnish startup that claims to have created the first production-ready solid-state battery (SSB) for electric vehicle production. The talk of the CES 2026 in Las Vegas, in January, Donut Lab says its battery has an energy density of 400Wh per kilogram—roughly twice that of typical lithium iron phosphate (LFP) batteries in production. The Donut batt can charge to full in five minutes, says the company; has a practically unlimited lifespan (100,000 charging cycles); is unaffected by heat and cold (-30C to 100C); and contains no rare earth, precious metals or flammable liquid electrolytes. With all that, Donut Lab says it will be cheaper to produce than conventional lithium-ion batteries.

“The resistance won’t disappear when we present the proof,” Lehtimäki said in a video presentation. “It will just intensify because this new technology is a threat to the established players in the industry.”

https://archive.is/I6IZB#selection-2499.0-2499.208

 

Great stats – but does it still explode on impact (ie: the lithium batteries in cars now)?