Finnish startup Donut Lab has unveiled technical details regarding the solid-state battery powering the Verge TS Pro Gen2, which it claims is the world’s first production-ready motorcycle of its kind. Boasting a claimed energy density of 400 Wh/kg and a lifespan of 100,000 cycles, the battery utilizes a unique air-cooling system featuring small, PC-style fans. While the company faces skepticism over its ambitious performance claims and lack of patents, the electric bike has reportedly entered production, promising record-breaking charging speeds and a range of approximately 349 kilometers.
Donut Lab, a battery technology firm based in Finland, recently provided a deeper look into the solid-state battery architecture integrated into the Verge TS Pro Gen2 motorcycle. This development marks a significant milestone, as the companies position the vehicle as the first electric bike powered by solid-state technology. Despite the excitement, the industry remains cautious, as Donut Lab has yet to provide concrete evidence of its proprietary chemistry or secure the patents typically associated with such a breakthrough.
The Standard Range version of the Verge TS Pro is equipped with 192 individual 94 Wh cells, providing a nominal capacity of 18 kilowatt-hours and a peak of 20 kWh. For riders seeking more endurance, a Long Range variant offers approximately 30 kWh within the same battery enclosure footprint. The 18 kWh model operates on a 400V system, utilizing a modular configuration where four layers of cells are stacked with an offset. To manage thermal loads, the design employs heat transfer plates and compact fans—similar to those used in personal computers—to dissipate heat into the surrounding air.
Charging performance is a central highlight of the new motorcycle. When connected to a DC fast charger, the Verge TS Pro Gen2 can reach a peak input of 100 kW. This allows the battery to charge from 10% to 80% in just 11 minutes, while a nearly full charge of 90% takes less than 15 minutes. Although this charging rate is lower than the 200 kW previously suggested by the company, it represents a C-rate of over 5C, which significantly exceeds the sub-4C average found in most contemporary electric vehicles.
The efficiency of this system translates to roughly 19 kilometers of range added for every minute of charging. With a total estimated range of approximately 349 kilometers, the Verge TS Pro aims to eliminate range anxiety for electric motorcycle enthusiasts. Donut Lab asserts that while liquid cooling could further enhance charging speeds in larger vehicles like cars, the air-cooled setup is a necessary trade-off for the compact frame of a motorcycle.
While production of the upgraded Verge TS Pro reportedly commenced last month, the scientific community is still waiting for independent verification of the battery’s performance and composition. Donut Lab continues to stand by its claims of zero rare-earth material usage and an unprecedented lifespan, positioning itself at the forefront of the next generation of electric mobility.