Electrical System Storage

[kmx888]

Putting my 2015 Expedition up for the winter. I want to keep the batteries charging and am not sure of the best way to do it. I have it plugged into the house for starters. If I turn the main disconnect to "off" will the batteries still charge?
What about turning the inverter off? I have the residential refrigerator circuit breaker turned off (only way to keep the light off and doors open).
Best
Kevin

[Full.Monte]

I don't have your model MH, but you raise an interesting question. What type of battery charger is in your rig? The best ones are three-stage chargers, with the last stage being a trickle charger with a de-sulfonization feature.

I don't leave my charger plugged in all the time, but occasionally hook up an external charger of the type noted and recharge each of the batteries in the coach individually.

It is important to keep your batteries charged. It is also important not to overcharge them. It all depends on your charger.

[JiminJersey]

And make sure you check the water in each of them, if appropriate. My four 6v batts were dry as a bone a few weeks ago. Took nearly 3 gallons of distilled to top them all up. Now we're good.

I'm pretty sure most newer MHs with a chassis ("starting") battery and one or more coach or house batteries have control centers that charge both sets when on shore power. This is often NOT the case with older units - my 87 Bounder did not charge the chassis battery while on shore power, so I bought a Trik-L-Start unit, which diverts a few amps of charge from the house batteries to the starter battery to keep the whole shebang going.

A slow trickle is all that's usually needed, depending on the amps in use when just sitting there - my Excursion has a 2 amp draw while sitting idle. I'd get some sort of slow trickle on the batts and maybe check the volts and water level every week or so, just to keep up.

[D Lindy]

We just keep ours plugged in all winter with both coach and chassis battery switches turned on. If you have AGM batteries then checking the water is a non-issue, and your coach will have a 3 stage charger/inverter unit so the batteries will not be over charged/cooked.