Ok, sounds like something basic may be missing or the terms we use?
When plugged into shore power, there is a converter which should charge the coach or house batteries. those are the things that the RV has like inside lights, fans, etc. This converter is what should charge the coach batteries but it needs the coach battery disconnect left on to have cntact for charging?
So do you mean house batteries are deas as inside lights, etc not working? Remember to turn the disconnect swithc back on to get them to work!
That is where I may be seeing some confusion on what we are talking. No big deal, as long as we both talk the same!
When you push the boost switch, that will connect those coach batteries together with the chassis/start battery to help a weak start battery start the engine!
So what I'm getting at is that if the coach batteries are dead and you want to boost a weak start battery, tying them together is not going to help. We are not speaking quite the same somewhere?
I'll mention a few hangups that can catch us?
One is that the disconnect switches can mislead us as they actually DO NOT disconnect all the drains but leave a few nasty things that can drain either set of batteries if given time. On the coach we find things like CO and propane detectors as they are safety stuff.
On the start battery, there are smaller loads like if ther radio has station presets that it remembers or the steps if they have a light that stays on while the steps are out?
Then the inverter is a different piece used to make 110AC from using the coach batteries. Normally it should stay OFF until you get where you want the 110 AC power and do not want to run the generator or be plugged in. It will use some coach battery, even when there is nothing using the AC it is making. Inside parts stay warm and use battery!
Big points to watch? Both batteies can run down if not plugged in or something done to keep them charged! When plugged in the coach are usually the on ones charged, so the start may go down. Leave the coach battery disconnect on to keep the coach batteries charging but watch for the water running dry!
Some RV have an added par to "steal" some charge from the coach to the start batteries but many do not, so assume they will not charge from the RV being plugged in until you find different!
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Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!
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