Instrument is a Geonics EM16 VLF receiver, using in the mineral exploration industry to find buried linear conductors.

  • TroyOP
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    2 months ago

    These batteries are in a circuit which has a physical power switch separating it from the device, meaning there should be zero parasitic drain while off.

    Thus I conclude your fun fact to be apocryphal.

      • TroyOP
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        2 months ago

        Duracell rep might be a sales robot. Or possibly talking about another type of battery? Anyway, points for learning :)