Donut Lab’s Solid-State Battery Reaches 80% Charge in Under 5 Minutes in Independent Tests

• February 23, 2026

Donut Lab has revealed promising results from independent tests of its solid-state battery, demonstrating a rapid charging capability that could significantly impact the future of energy storage technology. According to reports, the battery achieved an 80% charge level in less than five minutes while maintaining 99% of its capacity.

One of the key advancements highlighted in the testing report is the battery’s ability to operate efficiently without relying on complex liquid cooling systems. This development addresses one of the major challenges in current high-performance battery designs, where thermal management often requires bulky and intricate liquid cooling solutions.

Implications for Battery Design and Electric Vehicles

The rapid charging performance combined with minimal capacity degradation suggests that Donut Lab’s solid-state battery could offer both faster recharging times and longer service life. This is particularly relevant for electric vehicles (EVs), where charging speed and battery longevity remain critical factors influencing consumer adoption and convenience.

By eliminating the need for liquid cooling, the battery’s design could lead to lighter and more compact packs, simplifying vehicle architecture and potentially reducing production costs. Faster charge times below five minutes for a substantial portion of the battery’s capacity could alleviate concerns about extended charging periods, a common criticism facing EVs today.

While the specific materials and engineering behind the battery were not detailed in the report, the test results suggest that Donut Lab is making significant strides in addressing the limitations of conventional lithium-ion technology. Solid-state batteries have long been considered a promising next step due to their potential for higher energy density, improved safety, and enhanced durability.

The independent nature of the tests adds credibility to Donut Lab’s claims and indicates that the company’s technology may be approaching practical viability. However, additional information on scalability, manufacturing processes, and real-world application performance will be necessary before it can be adopted widely.

In summary, Donut Lab’s recent battery testing report reveals an impressive combination of rapid charging and capacity retention without complex cooling needs. This advancement could mark a meaningful progression in battery technology, especially for sectors demanding fast, efficient energy storage such as electric transportation and portable electronics.

Donut Lab’s solid-state battery reportedly achieves 80% charge in under five minutes with 99% capacity retention, eliminating the need for liquid cooling.