Mastodawn

Electric reconnaissance drone flies 10+ hours on hydrogen fuel cells.

https://cleantechnica.com/2026/04/12/zero-emission-drone-news-from-ukraine-flying-fuel-cells-green-hydrogen/

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Drone News From Ukraine: Flying Fuel Cells And Green Hydrogen

Zero emission, low-noise hydrogen fuel cell combat drones are emerging in Ukraine alongside activity in the green hydrogen field.

CleanTechnica