DORVAL, Québec–(BUSINESS WIRE)–EVIO and ElringKlinger have launched prototype build of the full-scale battery pack for the EVIO 810 Energy Storage System (ESS), marking a key milestone in the development of the aircraft’s strong-hybrid propulsion system. The prototypes will support initial pack-level testing and validation as the program progresses through its next phase of development. The milestone follows multi-physics pack engineering, detailed cell characterization and progress in physic