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Old 09-22-2020, 07:43 PM   #1
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Battery indicator

Hi all.
Iím brand new to this site as we just took delivery on a 2007 Winnebago Voyage 35L. We are first time RVers. We love our motor home and everything works great, but we do have one issue. Our dashboard battery indicator is constantly flickering. We put the coach battery under full load and it is charging fine. The OBD reveals no issues. This was checked by a friend who is a ford mechanic. Weíve driven it about 150 miles with no problems. Just thought Iíd throw this out to see if any else has experienced a similar issue and outcome. Any help would be appreciated
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Old 09-22-2020, 08:14 PM   #2
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Sounds like a loose connection....check alternator wires...
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Old 09-22-2020, 09:35 PM   #3
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Did you have the generator running ?
Some systems send charge from the house battery to the chassis battery. That can cause the flickering light and not a problem.

If that's not the case, then you need to measure the chassis battery voltage when the light is flickering.
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Old 09-23-2020, 07:58 AM   #4
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The flickering light basically is showing the direction current is flowing, either into or out of the chassis battery. A red light is outgoing, indicating the battery is losing charge. That would mean either a lack of incoming current (possibly a faulty alternator) or excessive outgoing current (e.g. multiple high amp devices running or charging badly discharged house batteries).


In terms of probability, I'd suspect either filed diodes in the alternator or a house battery with a bad cell sucking too many amps. You can have the alternator tested at many auto parts stores. House batteries can be load tested, but maybe easier to simply take them offline for a test drive and see if the lamp still flickers.
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Old 09-23-2020, 10:21 AM   #5
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Hi ! Welcome to IRV2! We're sure glad you joined us!

I'm not a mechanic but it sounds like Gary knows what he's talking about!

Good luck, happy trails, and God bless!
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Old 09-23-2020, 03:48 PM   #6
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Thanks for all the input folks. Trying to figure this out before headin from Providence RI to Virginia Beach in a couple of weeks
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Old 09-23-2020, 04:37 PM   #7
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Quote:
Originally Posted by Gary RVRoamer View Post
The flickering light basically is showing the direction current is flowing, either into or out of the chassis battery. A red light is outgoing, indicating the battery is losing charge. That would mean either a lack of incoming current (possibly a faulty alternator) or excessive outgoing current (e.g. multiple high amp devices running or charging badly discharged house batteries).


In terms of probability, I'd suspect either filed diodes in the alternator or a house battery with a bad cell sucking too many amps. You can have the alternator tested at many auto parts stores. House batteries can be load tested, but maybe easier to simply take them offline for a test drive and see if the lamp still flickers.
So Gary when you say take the batteries off line do you mean placing the aux battery switch to the off position?
I’m brand new at this
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Old 09-23-2020, 05:38 PM   #8
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Switching off the Aux battery switch will not disconnect it from the chassis charging system.
That switch only disconnect the house loads from the house battery.
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Old 09-23-2020, 06:01 PM   #9
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Got ya thanks
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