#Switzerland #Energy Storage #Safety Testing #Sion #H55 Energy

H55 Completes Successful Safety Verification Tests for Integrated Energy Storage System

H55, a Swiss company dedicated to advancing electric propulsion systems for aviation, recently announced the successful completion of safety verification testing for its Integrated Energy Storage System (ESS). This marks a significant milestone in the validation and certification process of its innovative technology, which aims to revolutionize electric aviation.

The testing was conducted in a fully integrated setup, combining all critical subsystems into a complete operational architecture. The components involved included Battery Modules (BM), Battery Management Units (BMU), Energy Flow Counter (EFC), Power Protection and Distribution Units (PPDU), and Charge Control Units (CCU). Each of these elements plays a crucial role in ensuring the overall safety and performance of the energy storage system.

The primary focus of the test campaign was to validate not only the system's performance but also the integrity of communication among subsystems. However, the standout achievement was confirming the operational safety functions under real-world conditions. The results demonstrated robust coordination between all subsystems, ensuring stable and predictable system behavior across various scenarios.

A pivotal outcome of the tests was the successful verification of critical safety functions at the system level. This includes the automatic and controlled disconnection of power during predefined failure or abnormal conditions, which is essential for safe operations in the aviation sector.

Anthony D'Ambrisi, Head of the Design Organization at H55, emphasized the importance of this milestone: "This achievement is crucial for reducing risks associated with our technology and is a step forward in our certification roadmap. By validating safety functions within an integrated architecture, we demonstrate our readiness for certification not just at the component level, but as a complete system. This is a significant step towards large-scale industrialization and deployment."

Unlike many emerging manufacturers that develop systems in isolation, H55 has designed its ESS in line with certification requirements from the outset. This approach involved close collaboration with aviation authorities, including the European Union Aviation Safety Agency (EASA), to ensure compliance with aerospace-grade standards that far exceed experimental designs or flight permit processes.

With over a decade of experience in electric aviation, H55's safety philosophy goes beyond merely managing failures. Their focus is on detecting, controlling, and mitigating risks before they escalate, providing a higher level of system reliability, which is critical for obtaining certification in demanding aviation environments.

The successful conclusion of the safety verification tests marks a crucial juncture in H55's journey from validation to implementation. With active programs in progress and a growing demand for certified electric propulsion solutions, the company is well-positioned to assist aircraft manufacturers and operators in transitioning towards electric flight.

As the aviation industry accelerates its efforts towards decarbonization, H55's integrated and certifiable energy storage systems are set to fuel a new generation of electric aircraft, designed not only to fly but also to scale effectively. H55 is poised to play a pivotal role in this transformative phase of aviation.

About H55

H55 is a Swiss company specializing in certified electric propulsion systems and energy storage for aviation. The company is transforming commercial lithium cells into safe energy storage systems approved by regulators, enabling Original Equipment Manufacturers (OEMs) to implement these solutions reliably across various aviation programs. This consists of independent cell characterization, rigorous quality control, redundant safety architectures, and testing aligned with regulatory requirements designed to simulate worst-case failure scenarios.

Founded from the technological heritage of the Solar Impulse program, H55 builds on over two decades of hands-on experience in electric aviation. The company has designed, built, and operated numerous electric aircraft, accumulating over 2,000 fully electric flight hours without incident related to battery issues. This operational experience equips them to not only comply with but also to execute certification programs effectively.

H55 benefits from a strong and experienced management team that combines extensive experience in scaling tech companies with solid operational execution. Together, these capabilities support a reliable transition from certified design to repeatable mass manufacturing, with H55's platform-based approach enabling the accumulation of certification evidence across programs, reducing adoption risks and facilitating efficient capital deployment for electric and hybrid aircraft.