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Old 04-24-2009, 09:05 AM   #1
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2007 34' Classic
Oswego , New York
Join Date: Apr 2009
Posts: 3
Discharging batteries

2007 Classic Limited 34 ft and since we started using it (new Apr 2008) the batteries constantly discharge. It has factory solar Sunexplorer with series 27 AGM batteries.
When driving the battery will discharge 12.7 to 12.4(approx) in one day(while being charged by solar and tow vehicle).When picked up new at Colonial Airstream the batteries where down and they said the converter was bad and changed it but did not check anything else. It did not help. I have been to Camping World in Syracuse, Airstream in Denver, Airstream in Vegas, and Airstream repair in Los Angles (where the owner told me he did not know how or have the equipment to do a "draw" test). Denver had it for 3 wks and the batteries were dead at 11.7 when we went to pick it up. Wthout a generator and using propane for fridge and water heater I still cannot boondock for 24 hrs.
Thoughts, help, suggestions would be appreciated...

Jim and Kam

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Old 04-24-2009, 10:17 AM   #2
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1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,362
Just a guess, since I can't see it, but it sounds like something in the solar/converter gear is the problem. Look for switches and relays that are either not connected, reversed, or even a blown fuse. As for it disharging while towing, what are you using for a tow vehicle? Some of them require a fuse be installed in the fuse block under the hood in order to charge the trailer batteries.

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Old 04-24-2009, 11:04 AM   #3
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2011 34' Classic
Westchester Cty.NY , / Miami FL
Join Date: Jul 2007
Posts: 3,122
have the batteries been tested. they might have suffered damage prior to delivery.
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Old 04-24-2009, 02:49 PM   #4
1972 Travelux Princess 25
Cobourg , Ontario
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Here's a trick I use for tracking down faults in car and truck wiring. Maybe it will help you.

Take one cable off the battery and connect a 12 volt test light between the cable and battery post. With everything turned off the light should be dark. If it glows it means there is a current draw.

Take out the fuses one by one. When you get to the one that shuts off the test light, that is the circuit that has the problem. By doing this you narrow down the problem and track it down.

If you still can't figure out exactly what is wrong, at least you can disconnect the faulty part and leave it off until you get to a service tech. It will save him time too.
Living in the trailer park of sense, looking out the window at a tornado of stupidity.
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