Electrifying Aviation🔒 SSL Verified

Table of Contents

• ↓ H55 is the first company to achieve regulatory approval
• ↓ Battery Engineering on Cell-Level
• ↓ Our ESS is an agnostic platform
• ↓ H55 is not a concept or a roadmap - it is already flying and building regulatory proof
• ↓ BRM Aero
• ↓ Top Alternatives to h55.ch

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"H55 exists to accelerate the inevitable transition to electric aviation by solving the single biggest roadblock: certification-grade energy storage. We engineer, architect and certify energy storage that is predictable, provably safe, and trusted by authorities, insurers, and OEMs. Electric aviation scales on certification."

"Completed on December 19, 2025, the EASA-approved and witnessed campaign confirms completion of the hardest milestone in electric aviation certification, establishing certification-grade, aviation-safe propulsion battery systems and defining the reference standard against which future programs will be assessed. Testing demonstrated certification-grade evidence that commercial lithium battery cells can be integrated into aviation propulsion battery modules, safely containing worst-case failure scenarios, including thermal runaway without propagation. Certification is the product."

"H55’s patented technology architecture allows for monitoring of every cell individually. By designing protection, monitoring, and mitigation directly at cell level — rather than relying on pack-level assumptions — we have built a fundamentally different Energy Storage System. This cell-level architecture enables effective protection at the point of origin, while optimizing battery efficiency, performance, and long-term reliability — all essential requirements for certifiable electric aviation. This is the foundation of our certification-grade safety architecture, designed around worst-case failure scenarios and regulator-approved containment — governing how energy is safely stored, monitored, and delivered in flight."

"One modular ESS platform compounds certification evidence across electric, hybrid, hydrogen-electric, STOL, VTOL, and regional aircraft. This enables manufacturers to advance without reinventing the safety core each time. We are not betting on which aircraft will win — we are building the energy-storage platform they all depend upon. By solving thermal safety, redundancy, and worst-case failure containment, H55 gives OEMs, regulators, and insurers the confidence required to scale clean flight. The certification-grade ESS platform shortens certification cycles, reduces program risk, and enables OEMs to move faster."

Key Topics & Focus Areas for h55.ch:

H55 is the first company to achieve regulatory approval

Battery Engineering on Cell-Level

Our ESS is an agnostic platform

H55 is not a concept or a roadmap - it is already flying and building regulatory proof

BRM Aero