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 ...

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 ...

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

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 ...

Additional tests of a Volvo C40 Recharge, performed by Bjørn Nyland, reveal that the available battery capacity might be higher than initially anticipated. During the near full discharge tests (from ...

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.

At the BDC-Testing Center in Rochester, N.Y., batteries and energy storage systems are tested for performance, durability, and safety in a modern 18,000+ square foot facility. The test center is an ...

Batteries serve as the main source of power in a substation in the event of an AC outage. They power critical loads and equipment like relays, indicator lamps, circuit-breaker controls, motor ...

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