The M400 Hydrogen-Electric UAV is modified based on the DJI M400 airframe. Adopting lightweight fuel cell technology, it is fitted with one 1400W hydrogen fuel cell system. It achieves an endurance of up to 90 minutes under a full payload of 2 kg. Benefiting from its long-endurance advantage, the M400 Hydrogen-Electric UAV enables efficient operations in scenarios such as power line inspection, emergency rescue and surveying & mapping.