Winter battery setup - Escape Trailer Owners Community

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Old 11-19-2018, 03:15 PM   #1
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Winter battery setup

We have a 21 that was purchased this past summer and I am preparing for winter. We have solar that won't work under the cover and dual 6vs. It is under a cover next to our house with empty water tanks and lines. I am deciding on the best electrical option for the batteries and to power a dehumidifier. I believe the battery switch disconnects from mains power but am not 100% sure.
1: Plugged in, battery switch on, converter charging batteries.
2. Plugged in for dehumidifier, battery switch off, charge 1x/month
3. Plugged in for dehumidifier, battery switch off, batteries disconnected from trailer and on a battery tender.

Option 1 is the easiest but not sure if that is bad for the batteries.
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Old 11-19-2018, 03:43 PM   #2
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The battery switch is made to isolate the batteries from any parasitic drain inside and once activated, solar still works. That said , if plug into 120v, just leave the battery switch in it's "not in use" position, whether you call that on or off, but you do not want to isolate the batteries and the converter will keep them safe over the winter, just make sure they have proper distilled water.
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Old 11-19-2018, 10:24 PM   #3
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Option 1 is easiest and works fine - the converter/charger will maintain charge without hurting the batteries. The switch needs to be in the "use" (connected) not store (isolated) position.
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Old 11-20-2018, 11:34 AM   #4
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I use Option 1, switch up, and do check the water level in batteries every 3 months (Google Calendar). I found this setup makes filling batteries with distilled water much easier.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 11-20-2018, 02:34 PM   #5
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Thanks for the advice. I will go with the easy option and check the batteries every couple months.
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Old 12-16-2018, 08:16 PM   #6
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I don't "get" the battery switch?!

Have winterized my 17B. It's plugged into AC power, to run the frig (to keep the mold at bay) and a Caframo RV heater (ditto). After about two weeks like this, my batteries (dual 6V) are down to 60%. The battery switch is in the "up" position (whatever that means — on? Off?). When I put the battery switch "down", the trailer lights go out. Which way should the switch be? What have I set up wrong? I thought on AC power, nothing draws on the batteries?
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Old 12-16-2018, 08:23 PM   #7
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I don't run the fridge. I just wipe it down and prop the door open. No mould.
I don't run a heater continuously, just every once in a while.

I rely on Dri-Z-Air containers and desiccant.
None of that helps figure out the battery issue. Are the terminals clean?
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Old 12-16-2018, 08:52 PM   #8
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Quote:
Originally Posted by maurerl View Post
Have winterized my 17B. It's plugged into AC power, to run the frig (to keep the mold at bay) and a Caframo RV heater (ditto). After about two weeks like this, my batteries (dual 6V) are down to 60%. The battery switch is in the "up" position (whatever that means — on? Off?). When I put the battery switch "down", the trailer lights go out. Which way should the switch be? What have I set up wrong? I thought on AC power, nothing draws on the batteries?
The batteries should charge, not deplete. Check first for a loose battery cable. Double check this. Then check for a loose ground. It's possible there is a short or a blown fuse as well, preventing the converter/charger from charging the batteries.
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Old 12-17-2018, 12:07 AM   #9
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If I have the batteries in the OFF position and disconnect from city power, the 12 volt ceiling lights will not work.

Now that your battery is down, you need the switch in the ON position and connected to city power, at least to charge, may take a while to charge. If you find you had it in the ON position and the batteries went down, then you have a problem. Check per rbryan's post.
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Old 12-17-2018, 11:42 AM   #10
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Not related to electric, but like gbaglo, i leave refrig open, and all cabinets and drawers open, and cushions propped on edge. But I use mine year round.
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