Better yet, design the battery so that air forms one side of the chemical reaction, with waste products that can be dumped overboard. Oh, wait!
(I'm making a dumb reference to ICE engines here, but actual batteries where air participates in the reaction are a promising area of research that could greatly improve battery energy density.)
(I'm making a dumb reference to ICE engines here, but actual batteries where air participates in the reaction are a promising area of research that could greatly improve battery energy density.)