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03-15-2024, 10:50 AM
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#1
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Montana Fan
Join Date: Dec 2020
Location: Glendale
Posts: 194
M.O.C. #27658
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Solar power???
While in storage with everything unplugged my batteries drain to nothing over a couple of weeks. My question is if I leave the solar power on will it charge my batteries and keep them charged over a period of time.
When we purchased the unit I was told to disconnect both the primary power and the inverter power while not in use, but now my batteries drain to nothing. Not good!!!!
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Larry & Marilyn Gubbels
2019 F-350 Diesel 4X4, Short Bed, BW 18K slider,
closely followed by a 2020 Montana 3121RL
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03-15-2024, 11:48 AM
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#2
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,953
M.O.C. #5651
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disconnect the battery cable to make sure everything is off. My rig is fine for 4-7 months in storage and enough juice left to raise jacks and put out slides.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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03-27-2024, 02:37 PM
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#3
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New Member
Join Date: Feb 2024
Location: Gilbert
Posts: 6
M.O.C. #33923
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Quote:
Originally Posted by Gubs
When we purchased the unit I was told to disconnect both the primary power and the inverter power while not in use, but now my batteries drain to nothing. Not good!!!!
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I don't believe there is any technical reason you shouldn't leave your panel/charger turned on. I'm assuming you have separate switch like I do for main power and solar, so you can leave main power off. Lithium batteries do not have the low cycle rates that other battery chemistries have. My '23 311RD has a resting load of about .3A, with main power and solar off, so I added a new switch on the negative battery terminal and just disconnect completely while I'm in storage since I'm in a covered spot and the solar is minimal. Of course if you do this, make sure to size the switch and cable correctly. I just copied the existing cable from the battery which was 1/0.
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03-27-2024, 02:40 PM
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#4
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New Member
Join Date: Feb 2024
Location: Gilbert
Posts: 6
M.O.C. #33923
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Sorry, assumed Lithium batteries. Lead acid can also handle constant charging. I still think disconnecting is first choice.
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03-27-2024, 03:02 PM
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#5
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,236
M.O.C. #30417
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With LA batteries you want to disconnect the negative cables and shut off the battery disconnect.
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Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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