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Old 08-05-2013, 07:40 AM   #1
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Coach batteries not charging

On our last trip our coach batteries were not charging while driving the MH or with the generator running. They do charge when plugged in to shore power. I am new to MH ownership and need some guidance as to what to look for as to the problem.

Thanks,
Gary
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Old 08-05-2013, 08:04 AM   #2
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I would first check to make sure all the cables are connected to the battery/batteries and the generator. You might just have a loose or broken wire.
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Old 08-05-2013, 11:06 AM   #3
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Fixed - it was the breaker on the generator that had tripped.
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Old 08-05-2013, 11:59 AM   #4
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But coach batteries should still be charging while driving MH. I cannot see how a breaker on generator would affect that?

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Old 08-05-2013, 12:28 PM   #5
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Good point. Guess it is back to the drawing board.
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Old 08-05-2013, 07:12 PM   #6
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What sources the coach batteries receive a charge from is unique to each manufacturer. It should not be assumed the coach batteries are charged from the engine alternator. A call to the manufacturer's customer service should solve the mystery very quickly.
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Old 08-05-2013, 07:45 PM   #7
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Quote:
Originally Posted by gmadams View Post
I am new to MH ownership and need some guidance as to what to look for as to the problem.
The problem is, that you don't have the basic tools to tell you when something is working and when it isn't!

I can't imagine trying to troubleshoot the simplest of electrical puzzles without utilizing at least a simple electrical meter such as an AC/DC CLAMP meter. With a clamp meter, all you have to do to discover what's happening with your batteries, is place the clamp around one of your house battery cables. It will not only tell you if the batteries are being charged, but accurately will tell you the charging current:

MS2108 RMS DC Clamp Meter Compared W Fluke Inrush Curre | eBay
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Old 08-05-2013, 08:19 PM   #8
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The problem is, that you don't have the basic tools to tell you when something is working and when it isn't!

I can't imagine trying to troubleshoot the simplest of electrical puzzles without utilizing at least a simple electrical meter such as an AC/DC CLAMP meter. With a clamp meter, all you have to do to discover what's happening with your batteries, is place the clamp around one of your house battery cables. It will not only tell you if the batteries are being charged, but accurately will tell you the charging current:

MS2108 RMS DC Clamp Meter Compared W Fluke Inrush Curre | eBay
Thanks for the tip. I am not the handy man that my dad was and I miss his wisdom. He could fix anything.
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Old 08-08-2013, 09:01 PM   #9
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What sources the coach batteries receive a charge from is unique to each manufacturer. It should not be assumed the coach batteries are charged from the engine alternator. A call to the manufacturer's customer service should solve the mystery very quickly.
You can't show me a coach that was built in the last forty years that wasn't designed to charge both the chassis and house batteries from the alternator.

The same can't be said for charging both batteries from the converter when on shore or generator power though. However, Winnebago gas coaches are just about the last hold out on that score too.
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Old 08-09-2013, 10:23 AM   #10
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Hi loulong,
How about an 04 HR 40' DP. There may be more. After a day of travel the coach batteries were drained. I went in circles trying to determine why the coach batteries were not charging from the alternator. I had my friend contact HR tech support. The call was on a speaker phone and the tech said the coach was not designed to charge the coach batteries from the alternator. Coach batteries would be charged from the generator or shore power only.

[ moderator edit ]
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Old 08-09-2013, 10:58 AM   #11
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You can't show me a coach that was built in the last forty years that wasn't designed to charge both the chassis and house batteries from the alternator.

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Old 08-10-2013, 09:49 AM   #12
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2007 Itasca Ellipse 40 FD.
NOT TRUE.....
That coach has a solenoid, specifically installed to bridge the batteries together anytime the ignition is ON. Try again....
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Old 08-10-2013, 10:20 AM   #13
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On mine a circuit breaker trips on occasion and keeps the batteries from being charged.

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Old 08-10-2013, 11:27 AM   #14
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Hi loulong,
How about an 04 HR 40' DP. There may be more. After a day of travel the coach batteries were drained. I went in circles trying to determine why the coach batteries were not charging from the alternator. I had my friend contact HR tech support. The call was on a speaker phone and the tech said the coach was not designed to charge the coach batteries from the alternator. Coach batteries would be charged from the generator or shore power only.

[ moderator edit ]
I know many folks with HR coaches, ranging in years from 1995 through 2010, and they ALL will charge the coach batteries (along with the chassis batteries) from the alternator when the engine is running. I suggest your friend obtain a wiring diagram for his coach and see for himself.

The HR Tech was simply WRONG. I realize that a speaker phone makes it true (not), but he didn't know his facts.
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