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Old 07-04-2014, 01:36 PM   #1
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Parasitic Battery Drain

We have a 2014 Crossroads 29RK fifth wheel. We came back from our last trip 10 days ago. I turned everything off and put it on the storage pad at home. Today I went out to put things back in and found the battery was dead. The battery is an Interstate Marine/RV Deep Cycle Group 27. It had drained to 7 volts according to my multimeter. The only parasitic drain that I know of is the clock on the stereo, the smoke detector and the propane leak detector. Are these enough to drain the fully charged battery in only 10 days?
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Old 07-04-2014, 01:51 PM   #2
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If you are sure, that's all that was drawing, then apparently it can.
There might be more that was inadvertently forgotten and was left on. One thing that comes to mind is the TV booster.
With that being said, I have to admit I am not a fan of the Interstate Marine/RV Deep Cycle Group 27.
When we bought our trailer I had two of them installed. Big mistake!!
I now have two Trojan t105 6V in there. My unit can sit for weeks not being plugged in, and the parasite draws don't discharge them like you have just experienced.
In fact Mine sat for two or three weeks recently, and I showed 12.7. yesterday when I checked.
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Old 07-04-2014, 02:17 PM   #3
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Originally Posted by Chateau Duke To Go View Post
We have a 2014 Crossroads 29RK fifth wheel. We came back from our last trip 10 days ago. I turned everything off and put it on the storage pad at home. Today I went out to put things back in and found the battery was dead. The battery is an Interstate Marine/RV Deep Cycle Group 27. It had drained to 7 volts according to my multimeter. The only parasitic drain that I know of is the clock on the stereo, the smoke detector and the propane leak detector. Are these enough to drain the fully charged battery in only 10 days?
Not a big fan of the Interstate Marine/RV Deep Cycle batteries either. As far as parasitic drain you can also add the tv, signal booster, and microwave.
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Old 07-04-2014, 04:45 PM   #4
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Last time I checked the microwave ran on 120 AC and my TV runs on 120 also.
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Old 07-04-2014, 06:55 PM   #5
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If you don't have a battery shut off, you can install one. Or disconnect the battery and see if it losses it's charge.
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Old 07-04-2014, 06:58 PM   #6
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Last time I checked the microwave ran on 120 AC and my TV runs on 120 also.
Does your microwave have a clock? LED TVs draw power even when shut off.
That's how they have the instant on when you hit the switch.
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Old 07-04-2014, 07:03 PM   #7
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But the tv and microwave are plugged into the 120 outlets. They do not drain off the 12v system. When I'm not plugged in, the tv and micro shows nothing. Looking at the microwave is how I know I have my 120 connected.
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Old 07-04-2014, 07:05 PM   #8
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True!
I had my head stuck some place besides on my shoulders.
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Old 07-04-2014, 07:19 PM   #9
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Make life simple.....Install a battery cut off switch.....Problem solved.
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Old 07-04-2014, 07:25 PM   #10
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The one thing I missed was the antenna booster. So the booster, gas detector, and clock display on the stereo are the draws I can account for. These combined with a cheap battery must be the issue. Imagine that, the dealer gave me the cheapest possible battery. Shouldn't be surprised, he only filled one of the propane tanks and charged me for the other fill.

Thanks guys for your help.
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