H55 builds certifiable energy storage and electric propulsion systems for the next generation of aircraft – electric and hybrid, across civil and defense applications, from passenger aircraft to autonomous drones.
From pioneering electric flight to industrial-scale aviation, H55 brings unmatched flight experience, certification expertise and proven technology to the next generation of aircraft.
H55 integrates lithium-ion cells into a unified, flight-ready system providing safety, performance and reliability.
H55 is the first company to successfully complete all EASA-mandated and witnessed propulsion battery certification tests.
Patented monitoring, mitigation and protection technologies for every single cell, stopping failures before they can occur. Thermal runaway is not only contained – it cannot even propagate between cells.
Plug-and-play compatibility with diverse electric and hybrid-electric propulsion systems and airframes.
Our modular, certifiable energy storage and electric propulsion systems are designed for integration across a wide range of platforms – electric and hybrid, from passenger aircraft to autonomous drones, and for retrofits as well as new designs.
H55 is delivering the Energy Storage System for a 49-seat hybrid-electric demonstrator targeting up to 30% improved fuel efficiency.
H55’s certifiable battery system powers the SF-1’s modular architecture, enabling both all-electric operation and extended-range hybrid flight.
H55 developed the 104 kW electric propulsion system for the two-seat B23 Energic, optimized for the demanding operating profile of pilot training.
H55 delivered the energy storage engineering and system design supporting CAE’s work toward electrifying its high-utilization Piper Archer® training fleet.
H55 developed the energy storage solution for Harbour Air’s electric Beaver program, demonstrating how our modular battery technology scales to regional aircraft.