Sion & Selzach, 20 April 2026 – Smartflyer has received the first batch of certifiable battery modules from H55, marking a key development milestone in the SFX1 hybrid-electric aircraft programme.

The delivery enables the transition from component-level validation to full system integration as the programme progresses toward ground testing and initial flight.

FROM COMPONENT VALIDATION TO SYSTEM INTEGRATION

The Adagio battery modules will be integrated into the SFX1 aircraft as part of a broader system-level validation phase. This includes testing of propulsion architecture, energy management systems, and overall aircraft integration in preparation for ground-based trials.

The programme is currently advancing through its Proof of Concept stage, with ground testing scheduled for mid-2026 and first flight targeted for later in the year.

CERTIFICATION-READY ENERGY SYSTEMS

H55 confirmed that its Adagio battery system has completed required certification testing, demonstrating compliance with safety and reliability standards for aviation use. The system is designed for integration across both electric and hybrid-electric aircraft platforms.

The delivery reflects a shift from development to application, with certified energy storage systems now being incorporated into active aircraft programmes.

FOCUS ON SCALABLE ELECTRIC AVIATION

The collaboration supports Smartflyer’s objective of developing a hybrid-electric training aircraft aimed at reducing emissions and operating costs while maintaining operational flexibility.

H55’s propulsion and energy storage technologies are positioned as scalable solutions for broader adoption across the electric aviation sector, supporting both certification pathways and repeatable deployment across multiple aircraft programmes.