Coach not working.

[DrJMB]

Was getting ready for another trip. tried the slide, no go, tried awning nope, no interior lights. Is this a coach battery problem? The unit stays plugged into AC when not being driven. The was little to no water in coach battery.
I’m trying to charge it. Should I plug in AC line also? A little Leary on that.

[Duckogram]

Sounds like you “cooked” the battery. Bad Dr. I suggest disconnecting the battery ground before plugging in the AC power.

[DrJMB]

Well I’m off to the battery store. This one was an Interstate. Maybe Excide this time.

[charles l]

top off with distilled water to keep it full near the top. It gets expensive replacing batteries. I did the same thing and ended up buying two new coach batteries.

[trdutch]

Yea
I learned that keeping the coach plugged in all summer just cooks the batteries
I keep them charged as necessary and topped with distilled water
Good quality Interstates that have not given me one ounce of trouble since I got rid of the stock OEM junk batteries that caused me over a years worth of problems with everything you are talking about

[Kirk S]

Originally Posted by trdutch

Yea
I learned that keeping the coach plugged in all summer just cooks the batteries
I keep them charged as necessary and topped with distilled water
Good quality Interstates that have not given me one ounce of trouble since I got rid of the stock OEM junk batteries that caused me over a years worth of problems with everything you are talking about

I guess I've been lucky. I checked the batteries on my Forester when I purchased it Jan. 2017 and all cells were good. It was built November 2016 so I figured it hadn't been plugged in much on the dealer lot.

According to the literature on my converter, a Progressive Dynamics I believe, it is a 4 stage converter/charger that maintains the batteries better than most. Supposedly, every 21 days, the charger turns up the amps to stir up the electrolyte which reduces sulfation.

We live in Georgia and our rig is always plugged into shore power when parked except when exercising the generator.

I started out checking the water level in the batteries monthly and it was 6 months before I needed to add any. I now check it quarterly and it appears it takes 6 months for my batteries to need topping off.

Not sure which brand converter you guys have but it doesn't seem right that your batteries are cooking.

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[D W]

If your batteries are "cooking" due to being left plugged-in then you have a problem with your converter. It is simply overcharging, and not going into float mode.