Smartflyer’s new modular batteries boost efficiency and enable rapid shifts between electric and hybrid flight
Smartflyer, a Swiss electric aircraft manufacturer, which is developing SF-1 to combine the benefits of electric propulsion with the extended range of hybrid technology, has partnered with fellow Swiss aviation firm H55 to use the latter’s innovative battery system.
In a press statement, H55 says that its batteries are designed specifically for aviation and will be the first to receive certification from the European Union Aviation Safety Agency (EASA). Known for reliability and safety, these systems will give the SF-1 improved performance, flexibility, and a strong technological edge.
According to the statement, the new battery modules even exceed the originally planned capacity, providing Smartflyer with more efficient operations and enabling future upgrades with nose-mounted energy modules. This modular design will allow quick adaptation between fully electric and hybrid flight modes, it adds.
‘With H55, we have found a partner who fully shares our vision of innovation, safety, and sustainability. H55’s advanced battery technology is not only a technical milestone for the SF-1, but also a cornerstone in redefining the future of aviation and accelerating the path toward lower-emission flying,”says Rolf Stuber, CEO, Smartflyer.
The statement adds that the collaboration is fully aligned with H55’s strategy of delivering modular systems adaptable to multiple applications. It enables a seamless transition, from entry-level, all-electric aircraft based on existing designs that accelerate the adoption of quiet and efficient propulsion, to more complex solutions optimised for hybrid-electric systems that evolve in step with advancing technology and growing market maturity.
“What impresses H55 is the strong credibility of the project, underpinned by well-thought-out and truly innovative concepts. Its design, application, and production approach are not only smart but also highly efficient, both technologically and operationally. The clever airframe design further strengthens this advantage and makes Smartflyer an ideal partner in accelerating the transition toward sustainable aviation,” says Martin Larose, CEO, H55.
“Hybrid project architecture is a key highlight, as it offers performance levels comparable to combustion engines while maintaining a clear edge in sustainability, easing operational requirements while ensuring the most environmentally responsible solutions,” says Axel Doffey, Sales and Business Development Manager, H55, who represented his company at the signing ceremony.
The statement adds that the with the first demonstrator set to fly in 2026, an important milestone already shaping the industry, H55 and Smartflyer are showing that aviation is decisively moving toward a new era of sustainable, efficient, and affordable mobility.