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That was my thought exactly, Shannon!If I am correct, charging current of this circuit is limited only by wire gauge and rating of the relay. Use this circuit to charge a large or high capacity battery bank and have it dump to a water heater when fully charged.Use the heated water to "pre-heat" the hot water that flows into your residential hot water tank so that you won't use as much energy to heat your domestic hot water.Great "ible" in my opinion!
That sounds like a great idea to me.
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