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.

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

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

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 ...

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.

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 ...