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Old 10-07-2020, 10:33 AM   #1
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Monaco Owners Club
Join Date: Nov 2014
Location: Fountain of Youth, CA
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Battery connections and Intellec controller

My bad!

I decided to remove 2 of the 4 six volt batteries from my 2010 Monaco Monarch due to age. I then connected the two newer six volt batteries in series and started to reconnect the battery cables.

What I didn't do was tag all the connections when I disassembled the batteries. Now I have a problem.

While connecting the two cables at the back of the battery box to the negative terminal I noticed that one of the cables sparked on attempted connection. I checked the current and noted about 200 mA of current on connection. It appears to be associated with the chassis battery. When I use the disconnect switch on the chassis battery I get no spark. With the wire connected to the ground terminal I then switched the chassis battery back on.

In the MH I heard a "clicking relay" coming from the Intellec panel. The controller was flashing "o" and alternately clicking and flashing. There were no loads in the house and no shore power or generator power being supplied.

What I first need to know is what is the correct connection configuration of the wires in the battery box?

Secondly, is there a manual showing the fault conditions for the Intellec controller?

Any and all help would be appreciated.

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Old 10-07-2020, 10:56 AM   #2
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This may help on the battery connections.Click image for larger version

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I personally would replace all 4 batteries, not just the 2.
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV
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Old 10-08-2020, 07:50 AM   #3
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Posts: 1,509
What year, make and model coach do you have. Are all four batteries that you describe in our posting for the "RV" part of your unit with two more for the chassis for a total of six, like most have, or do you only have two for the chassis and two for the coach? If you actually have six, which would be two for the chassis and four for the coach like shown in Bill's posting above, you definitely should have all four batteries be the same make, size, type and vintage. Battery banks are not a good place to mix and match.

It would be really good for you to add the make, year and model of your motorhome to your "signature" on this website a so that information will always be there on your posts. It will hugely weed out those that can help and those that maybe won't have good knowledge for your particular application.
Jim & Angie, Boise, ID
2006 Monaco Dynasty Countess III
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Old 10-08-2020, 06:31 PM   #4
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Is that a large cable you connected?? Does the 200 ma go down after a few seconds??

If so, it is likely the capacitors in the inverter charging up. Of course do not leave it connected till this is sorted. You could have a serious disaster.

A large cable indicated heavy current of course and if you follow it where does it go?

Of course pictures would help. Is it logical that it is not long enough to connect to a positive post??

The clicking could be relays inside an inverter but without more knowledge of your rv I'm in the dark.
Myron & Deborah
08 HR Endeavor 40 SKQ
2016 Ford F150 Limited V6 with Ready Brake
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Old 10-08-2020, 06:32 PM   #5
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Oh, welcome to the Forum:
Myron & Deborah
08 HR Endeavor 40 SKQ
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