H55 delivers certified propulsion battery modules to Pratt & Whitney Canada for hybrid-electric flight demonstrator

Type: Supply Agreement · Technology: Storage · Country: Switzerland · Announced: 2026-06-17

H55 delivered its Adagio propulsion battery modules to Pratt & Whitney Canada as part of the RTX Hybrid-Electric Flight Demonstrator program, marking the first delivery of production-conforming systems to an active aerospace integration and flight-test initiative. The battery modules were manufactured in a regulator-approved facility and designed to meet aerospace OEM certification requirements, including redundant safety architectures and worst-case failure scenario testing. H55 claims to be the first company to complete propulsion battery certification testing aligned with regulatory standards, a milestone that enabled this commercial delivery. The company has accumulated over 2,000 flight hours across multiple aircraft programs without any battery-related incidents, demonstrating its safety record as a competitive asset for OEM qualification. Pratt & Whitney Canada's Executive Director of New Product and Service Introduction, Jean Thomassin, highlighted H55's role in advancing hybrid-electric technology through aviation-grade battery systems within a rigorous certification framework.

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