What is a battery isolator and why do I need one?
A battery isolator is an electronic device that allows your motorhome’s alternator or converter to charge both the engine battery and the coach battery, but keeps the two systems separate or isolated so the engine battery won’t be drawn down by the coach electrical system ensuring it will always start the vehicle, Some motorhomes have a switch, usually a push button on the dash, that will bypass the isolator allowing the coach battery to temporarily be used to start the engine should the engine battery fail.
