Stark Future has signed a strategic partnership with Chinese battery producer EVE Energy to develop a new cylindrical cell format intended for the company’s next-generation electric motorcycles.
The new 26120 cell is designed specifically for two-wheel applications, replacing the widely used 21700 automotive cell. In announcing the collaboration, Stark CEO and founder Anton Wass said, “To build the best motorcycles in the world, we shouldn’t compromise the battery cell format by using compromised technology from the car industry.”
The companies said the 26120 cell is engineered to take fuller advantage of motorcycle chassis packaging, maximizing space efficiency while delivering higher energy density, improved thermal management and faster charging. Stark reported that early prototypes tested at its R&D facility near Barcelona achieved a record 330 Wh/kg while retaining the ability to charge in about 10 minutes.
According to Wass, the new design “significantly increases capacity and reduces weight while significantly improving charging time,” adding that the format could set a new benchmark for premium electric two-wheelers.
EVE Energy said the cell’s aluminum enclosure improves thermal conductivity and cooling performance compared with conventional steel housings, while also reducing overall battery weight — a key challenge in electric motorcycle design. “The 26120 cell format has incredible potential. We are proud to partner with Stark Future to bring this new format to life,” said Dr. Liu, founder and president of EVE Energy.
Stark plans to begin preparations for industrial-scale production in 2026, with the 26120 cell to be integrated first into its upcoming on-road platforms. The company said the shift addresses future demands for longer riding times and higher performance, noting that its current off-road models already reach physical limits for many riders before range becomes a constraint.
