It's similar-ish. See https://en.wikipedia.org/wiki/Fuel_cell https://en.wikipedia.org/wiki/Fuel_cell and https://www.powermag.com/fuel-cells-vs-batteries-whats

It's similar-ish. See https://en.wikipedia.org/wiki/Fuel_cell https://en.wikipedia.org/wiki/Fuel_cell and https://www.powermag.com/fuel-cells-vs-batteries-whats-the-difference/ https://www.powermag.com/fuel-cells-vs-batteries-whats-the-d..., tho the latter may be biased.