You've managed to make the battery novel, not an easy task.
I could see them used as an auxilliary battery in starships, something equivalent to having a second battery in your car to power just the lights. Although, in the case of spacefaring, it would be better served as life support. The incredibly long lifespan would mean that even used-spaceship buyers wouldn't have to worry about replacing them.
A few alternate wide spread uses for them:
-Gravity plating on starships: A nice emergency back up to keep gravity functioning at .3-.6 G's or so during a catastrophic system failure. While far from earth normal being able to move about normally allows crews to better effect repairs then attempting to maneuver in zero gravity.
Atmospheric terraforming equipment Perfect to run the gargantuan terraforming installations on uninhabitable worlds, as these batteries take very little maintenance, and will operate the terrafomring equipment reliably for the 100+ years it takes to turn a plant habitable. (and keep it that way.)
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Escape pods: While not generally the primary power supply, a bucky battery can provide sufficent power to a cryo capsule and maintain it's functionality for immense time spans, perfect to allow ample time for the pod to be rescued, or travel as slower then light speeds to an inhabitable planet. (Something that could take decades if not centuries depending on the location it is launched from and end velocity.)
A nice short and simple sub with widespread implications and use in a scifi world. Creative characters/players can no doubt find plenty of way to use "bucky bats" to optomize their ship and/or equipment.
A intuitive Gm can find plenty of places they would come in handy to make spacefaring society run smoothly.
Inthe vast gulf between stars, or in areas where the sun is nearly dead (brown dwarf style) solar energy may not prove sufficient compared to one of these batteries.
The other downside to Solar panels is they can prove somewhat fragile in an area with frequent asteroid showers, and would also be somewhat useless to power a terraforming tower if it is terraforming a world with an atmosphere too thick for sunlight to effectively penetrate.Go to Comment