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jjrbus's avatar
jjrbus
Explorer
Feb 10, 2023

Battery isolator charge vehicle battery on shore power

I have a new to me 02 Roadtrek on a Chevy chassis. There is what looks to be a newer 4 post isolator, I see no name brand or specs on it. I have been RV'ing long time and never had an isolato...
wolfe10's avatar
wolfe10
Explorer
Feb 10, 2023
Most battery isolators charge both battery banks from the alternator when the engine is running.

Pretty easy to put your digital voltmeter on it and see whether it charges when the engine is running and/or when on shore power.

Yes, there are some battery combiners that will charge both banks anytime voltage is about a set level (indicating some charging source is on).

And, with any 19 year old vehicle, I would not ASSUME!

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