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dredmorbius
on May 22, 2019
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Mars Colony Power Simulator
Depends on battery tech. Metal-air batteries, in which atmospheric oxygen (on Earth) is the cathode, weigh more when
discharged
.
https://en.wikipedia.org/wiki/Metal–air_electrochemical_cell
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Search:
https://en.wikipedia.org/wiki/Metal–air_electrochemical_cell