Donut Lab has published results from a battery pack fast-charging test conducted with Verge Motorcycles. The test measured how the company’s solid-state Donut Battery cells perform together in an air-cooled pack designed for the Verge TS Pro electric motorcycle. According to the results, the pack charged from 10% to 70% in just over nine minutes. The company says this marks the first public demonstration of its battery technology at the pack level in a production vehicle.
Highlights
- Donut Lab’s solid-state battery pack achieved a peak charging rate above 100 kW (5C) sustained for five minutes in the Verge TS Pro motorcycle.
- The 18 kWh air-cooled pack charged from 10% to 50% in five minutes and from 10% to 80% in 12 minutes.
- Verge says the pack charges three times faster than its previous battery, with further optimization still planned.
- An extended-range version of the pack offers roughly two-thirds more energy capacity in the same physical footprint.
Fast-Charging Test Results
The test used a public fast charger with the battery pack starting at approximately 20°C. Key performance data includes:
- Peak charging power: Over 100 kW (5C rate), sustained for five minutes
- 10–50% charge time: Approximately five minutes
- 10–70% charge time: Just over nine minutes
- 10–80% charge time: 12 minutes
- Nominal pack capacity: 18 kWh
The pack was installed in an earlier-generation TS Pro frame fitted with a new model-year battery. Verge noted the results will improve further after software and system optimization.
Pack-Level Performance
Donut Lab CTO Ville Piippo said the test is the first the company has published showing multiple cells working together in a real vehicle environment.
“The high energy density of our battery technology enables flexible battery pack design and superior performance even in more challenging applications, such as motorcycles, where space is limited and system simplicity is key. We are able to offer vehicle manufacturers packs with different energy capacities in the same physical size, with even the smallest packs having very high capacities,” Piippo said.
Verge TS Pro Integration
The Verge TS Pro uses an air-cooled architecture. Verge CEO Tuomo Lehtimäki said the company aims to deliver the strongest possible user experience through its partnership with Donut Lab.
“The world’s fastest charging electric motorcycle, the Verge TS Pro, is also air-cooled. The battery pack used in this test is our standard model, but an extended range version is also available, with approximately two-thirds more energy capacity,” Lehtimäki said.
Verge also offers an extended-range pack option. Both versions fit the same physical dimensions.
What This Means for EV Battery Development
Solid-state batteries have long been positioned as the next major step in EV energy storage. However, most demonstrations have stayed at the cell level. Donut Lab’s pack-level test in a production motorcycle represents a meaningful step toward real-world validation. Additionally, the air-cooled design simplifies thermal management compared to liquid-cooled systems common in larger EVs.
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