With hydrogen fuel cells, a commercial, electric drone could spend up to two hours hanging in the sky, be refueled almost instantly after landing, and then take another 120 minutes in the air. Such performance beats batteries hands down.

Intelligent Energy attached a hydrogen fuel cell to a DJI Matrice 100 quadcopter. The fuel cell and its fuel weigh just 3.5 pounds, which is lighter than the battery it replaces. Hydrogen fuel sometimes comes with unique risks, but the National Hydrogen Association thinks those risks are overblown.

The company has been making hydrogen fuel cells since 2001, and recently demonstrated their drone on BBC’s Click. Intelligent Energy isn’t the first to make such a device: Boeing and others have their own fuel-cell drones. What makes this design stand out is the simple reality of it: a normal quadcopter, with a new power source, hovering in a gymnasium as though it was supposed to do this all along...snip
MORE: https://www.elektormagazine.com/news...ying-fuel-cell

Watch a hydrogen powered drone fly BBC News-Click UK



Mar 25, 2016: Jen Copestake has been given exclusive access to the test flights of a drone powered by a hydrogen fuel cell. Intelligent Energy's fuel cell can power a modified drone for up to two hours - about six times longer than the average with a normal battery.

Refuelling with compressed hydrogen takes a few minutes compared to recharging a battery.

The company sees its drones being primarily used in industry for agriculture and oil and gas mapping, before being offered as a consumer product.

Intelligent Energy
http://www.intelligent-energy.com/