cross-posted from: https://lemmy.ca/post/31642688
161grams = 5kwh+ of heat energy or close to 3kwh of electric only energy in a fuel cell.
For drones, ebikes, powerstations, this would be higher electric weight density than batteries. And solves ebike/powerstation charging on the go problem.
A kinda doubt it. A PEM fuel cell usually has a small amount of very expensive elements (like platinum) so I doubt they would be particularly feasible for something like an ebike.