The Enviro-Gen® is an electrochemical or metal-air fuel cell. The fuel is a sacrificial magnesium anode. The Enviro-Gen® generates its own electricity once the seawater is added and a load is placed on the unit. That is right, if there is nothing plugged in and operating, there is no voltage produced and no depletion, so this is not a `one-time shot`. You can use the Enviro-Gen for several hours, then dump out the water and rinse the magnesium anodes in fresh water and put it back on the shelf. Oh, the Enviro-Gen also has an indefinite shelf life and, unlike batteries, is unaffected by hot weather or engine room conditions making it perfect for boaters.
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