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Old 07-23-2016, 02:47 PM   #1
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1995 25' Excella
EUGENE , Oregon
Join Date: Aug 2009
Posts: 1
Angry Battery Switch Off: Turned On; No power. Did it Discharge?

First solo trip, right now, today, Saturday, July 23, 2016 in our 1995 Excella at our bare property at Oregon Coast. Switched off battery a few weeks back. DOES THIS DISCHARGE IT? Power doesn't work. Generator for an hour enabled it temporarily. What happened here? Somebody who REALLY knows this stuff please call this newbie in Oregon at 541-520-9821. Thanks!

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Old 07-24-2016, 08:03 AM   #2
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2015 27' Flying Cloud
Portland , Oregon
Join Date: May 2015
Posts: 265
My experience is that the batteries can run down in a few weeks even with the battery switch set to store. If this happens enough it will kill the batteries prematurely. That is why I have new batteries in a one year old trailer.

Now, if I'm going to store the trailer for more than a few days, I physically disconnect the positive cables from the batteries. If it's going to 3 weeks or longer, I pull the batteries and take them home so I can use a battery tender to keep them charged up.

You should use a digital multimeter to se what voltage is left in your batteries. If they are below 11.58 volts, they could be toast.


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Old 07-24-2016, 08:36 AM   #3
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2007 27' Classic FB
Fredericksburg , Texas
Join Date: Jun 2011
Posts: 254
Even if you turn the battery switch to off, there are ghost power drains that are not affected, i.e. monitor systems, radio power in some cases, hard wired smoke or CO2 sensors. Over a period of weeks these can drain the batteries. You might install a small solar panel to give a trickle charges to the batteries. Make sure it has a controller so you don't cook the batteries, though.
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