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Old 09-17-2013, 12:47 AM   #1
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Default Coach Batteries not Powering Coach

batteries are fairly new within the last 1 yr. All coach systems work when the engine is running. After engine shutdow there is slow dimming so that in 15 minutes it's like the batteries had died, though they are fully charged. Any help is appreciated.


1983 Newell Coach
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Old 09-17-2013, 12:53 AM   #2
Newellin Thunder
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It sounds like your newer batteries were left sitting in a discharged state and are now ruined which will require replacement.

Ernest Jenkins

2005 Newell Thunder
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Old 09-17-2013, 01:52 AM   #3
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Phil, Try isolating each battery & load test them.
Clint C. Johnson / Fran Balm
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Old 09-17-2013, 09:26 PM   #4
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Phil: you say "in 15 minutes it's like the batteries had died, though they are fully charged." Does this mean that you've somehow checked the batteries as the lights dim and they are indeed charged, or did you mean they were fully charged, as tested somehow right prior to shutdown, and then quickly lose the capability to light up the lights. Depending on which of these two you are experiencing will determine very different possible causes. It would help me immensely to know what you are actually experiencing.
Jon and Alie Kabbe
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Old 09-17-2013, 11:47 PM   #5
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Phil, there are several things that could be going may have a battery, or batteries that have sulfated, and are drawing down the others quickly, or if, as you relate, they are fully charged, then you could have a faulty ground that as the coach cools down becomes worse. You can tell pretty quickly if you have a bad battery by touching each one.....if one has sulfated it will be quite hot to the touch. However, we need more info to be of more help...Jon's questions are good ones.
Clarke and Elaine Hockwald - FULLTIMING!
1982 Newell 36 DD 6V92 TA
2002 Thunderbird Retro
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