H55 Completes Industry‑First Full Certification Tests for Electric Aircraft Propulsion Battery Modules
H55 has successfully completed all regulator‑required certification tests for its electric aircraft propulsion battery modules, marking a first for the aviation industry.
Jishan Khan 
Swiss electric aviation company H55 has successfully completed all regulator‑required certification tests for its electric propulsion battery modules, achieving an industry first in the certification of aircraft battery systems.
According to the company, this milestone marks the first time an aviation‑grade propulsion battery module has passed the full set of certification tests mandated by regulators, covering performance, safety, and reliability standards required for commercial aviation use.
The certification tests are a critical step toward the broader adoption of electric and hybrid‑electric aircraft, as battery systems remain one of the most complex and closely scrutinised components in next‑generation aviation. H55’s achievement is expected to accelerate certification pathways for electric aircraft programmes globally.
H55, a spin‑off from the Solar Impulse project, focuses on developing certified electric propulsion and battery management systems for aviation applications. The company said the successful testing validates its technology and supports its ambition to enable zero‑emission and low‑emission flight.
Industry experts note that certified propulsion battery systems are essential for scaling electric aviation beyond experimental aircraft and into commercial and training operations. H55’s progress highlights growing momentum in sustainable aviation technologies as the industry works toward decarbonisation goals.
