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Scientists Develop New Dirt-Powered Fuel Cell That Runs Forever
(scitechdaily.com)
This is a most excellent place for technology news and articles.
"Furthermore, the researchers used waterproofing material on the cathode's surface, allowing it to work during flooding and assuring progressive drying after submersion."
https://interestingengineering.com/innovation/new-fuel-cell-taps-energy-from-dirt-dwelling-microbes-to-power-sensors
I missed that part in the article, I should have just searched for the word flood, woops