Donut Lab's third independent VTT test confirms its solid-state battery retains 97.7% capacity after 240 hours idle. Energy density and cycle life remain untested.

Donut Lab solid-state battery retest by Finland’s VTT shows capacity rising to 110% at 80C, but weight data is still missing.

Car batteries fail without warning from the visible signs most drivers recognize. The internal chemical degradation that ...

The Donut Lab solid-state battery was heated to the boiling point of water. Here’s what happened next.

Lithium-ion batteries with liquid electrolytes are more susceptible to extreme heat. If a liquid battery gets too hot, the liquid can vaporize and catch fire — a process called thermal runaway. And at ...

Independent high-temperature testing suggests the Donut Battery doesn’t just survive extreme heat, it improves efficiency — potentially rewriting the rulebook on EV battery safety and performance.

Batteries lose capacity over time. The process can be slowed down, but it’s inevitable, so after a few years, your EV won’t provide quite as much range as when it was new. The battery will lose about ...

A car battery is a crucial component that plays a vital role in the operation of a vehicle. Its primary function is to provide electrical energy to start the engine and power various electrical ...

Modern cars rely on their batteries for far more than a quick jolt to start the engine. From power steering in a 2022 Hyundai Tucson to the security system in an older Honda Civic, almost every ...

Finnish startup Donut Lab has just released the third independent test of its solid-state ...