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Old 09-13-2016, 10:58 AM   #1
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Typical battery drain ?

We have a new Cruise Lite 171rbxl which we took out over the Labor Day weekend. We were connected to shore power the entire time and the battery showed full charged when we left the campground. We parked the trailer on Monday afternoon.

On the following Saturday, I checked the battery level and it showed 2/3 charged. Is this normal ? I would have expected to see it still fully charged.

Is disconnecting the ground the only way to prevent any power drain ? And is that advisable ?
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Old 09-13-2016, 11:19 AM   #2
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I suggest installing a power cutoff switch. There are parasitic drains on the battery such as smoke and LP detectors.
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Old 09-13-2016, 11:27 AM   #3
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It's possible you have a battery disconnect
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Old 09-13-2016, 12:18 PM   #4
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It's possible you have a battery disconnect
There is not one around the battery. I'll have to trace the cable down to find out !!!
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Old 09-13-2016, 12:56 PM   #5
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If you don't keep the trailer plugged into shore power or install a battery disconnect switch, your battery will be dead in a few days.
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Old 09-13-2016, 01:32 PM   #6
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Might also want to have the batteries load tested to make sure you are getting full capacity.
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Old 09-13-2016, 01:46 PM   #7
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power

You should put the disconnect switch on the positive side of the battery.

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Old 09-13-2016, 02:08 PM   #8
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A power cutoff switch is crucial. Without one you have no other choice than to disconnect the battery when not using the trailer or you need to install one. This switch was included in our trailer.

Another possibility is that you have a bad battery, which was our experience after buying a new Rockwood 2504S. The battery would not hold a charge and we couldn't get two days out of it with minimal battery use. The dealer checked the battery, confirmed it was defective, and replaced it. We have not had a battery drain issue since it was replaced.

Just another joy of life with a RV :0)
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Old 09-13-2016, 02:57 PM   #9
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I agree that you need to use a battery cut off switch for storage. I wonder what you are using that tells you battery status? Many are not accurate. If your drain is higher than mine, the battery is bad, or your monitor is not accurate could explain a lot. Take a specific gravity reading (if not sealed type) after letting it rest ... with no load and not having been charged for several hours.. this you can do yourself but if you want an autoparts store test it, charge it well first.
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Old 09-13-2016, 03:16 PM   #10
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Quote:
Originally Posted by alarge1 View Post
On the following Saturday, I checked the battery level and it showed 2/3 charged. Is this normal ? I would have expected to see it still fully charged.
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I wonder what you are using that tells you battery status? Many are not accurate.
If you're using the "idiot lights" on the panel, it's far from accurate. From my experience on one or even two 12V systems, Full=plugged into shore power, good=anything over half discharged, fair=you've pretty much drained the battery to the point of hurting it's life span, and weak=you might as well toss it. The only time I've ever had the lights show full charge on battery alone was when I went to larger 6V and that only lasted a few hours with nothing running.

But, yeah...normally without being plugged in you can kill a battery in about a week with nothing more than the detectors running.
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