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Old 08-21-19, 03:29 AM   #2
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Ok so if you are going with a dedicated electric pump, use a battery backup DC pump. Why? It's a dedicated system. Low chance of failure, occasional use assures a long life. Also, a DC pump wired to a switch straight to the battery is the best you can do to avoid Murphy's law. A power inverter on a battery running an AC motor is going to burn a portion of the battery capacity. Not just because the inverter is always on, but the conversion from DC to ac eats some battery as well. Plus there's the same basic switch to cycle the motor anyway. Plus the same basic battery charger.
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