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batteries won't stay charged |
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ronnieb 
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Joined: 24 Oct 2020 Online Status: Offline Posts: 8 |
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 Topic: batteries won't stay chargedPosted: Today at 10:00am |
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My batteries won't stay charged after reaching 12 volts with a solar panel nor will they charge after driving. What to do?
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GlueGuy
Senior Member 
Joined: 15 May 2017 Location: N. California Online Status: Offline Posts: 2704 |
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Posted: Today at 11:17am |
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What are you expecting? Batteries do self-discharge, even with no load. So expect to have to charge them at least once a month without a load.
Separate from that, there can be parasitic loads that will discharge a battery much more quickly. In extreme cases, maybe only a day or two. You need to use a DC-capable ammeter to see what parasitic load you have. The parasitic load on our RP179 is about 1/4 amp, or 250 milliamps.
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bp
2017 R-Pod 179 Hood River 2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost |
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ronnieb
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Joined: 24 Oct 2020 Online Status: Offline Posts: 8 |
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Posted: Today at 11:32am |
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Hi Glue Guy, I do charge the batteries every month, but on this last road trip, the batteries were at 7.6 volts after driving 10 hours..not enough to open the slide. I hade to start my truck to operate it.
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Tars Tarkas
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Joined: 14 Jan 2013 Location: Near Nashville Online Status: Offline Posts: 1453 |
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Posted: Today at 3:32pm |
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How old is the battery? Are all cells filled with water? Are all connections clean and tight? TT
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2010 176
FJ Cruiser |
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