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What is the purpose of a Battery Isolator?

April 26, 2017battery isolator purpose

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What is the purpose of a Battery Isolator?

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A Battery Isolator allows the auxiliary battery(s) to be completely discharged without discharging the main vehicle battery. The Isolator is ideal to use with an inverter connected to auxiliary batteries that are daisy chained to the vehicle battery.

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A battery isolator allows a vehicle to charge more than one battery in a system and designates the second battery for powering auxiliary loads. This keeps the loads from draining the main engine cranking battery.