4 ms·
> the energy density of batteries is simply to low (energy per kg) for airplanes to be efficient. Technically, hydrogen airplanes with fuel cells are electric
by benhurmarcel 6y ago
> the energy density of batteries is simply to low (energy per kg) for airplanes to be efficient.
Technically, hydrogen airplanes with fuel cells are electric and much more feasible, but I don't think that's what his post meant indeed.