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Old 09-14-2016, 12:21 PM   #31
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Possible causes for battery drain

Recent perplexing experience with new 2017 FR Vibe brought me new insight on battery drains.

I always follow the manufacturer's guideline of turning off all loads and turning off the Main breaker prior to disconnecting shore power. I have also installed a battery isolation switch to prevent battery drain as I had experienced in my previous RV.

When I went to get my RV out of thr storage area to prep it for a trip on Monday, both batteries were dead! Even hooking up my truck to the electrical tow connection did not provide enough power to move the tongue jack. When my brother-in-law gave me a jump on the trailer battery, which was dead, he swa a spark when he attached the cables to his vehicle. This indicated a load somewhere. After getting a jump to the battery on the RV to use the jack, I got the RV home, and required another jump to jack the trailer off of the hitch. Troubleshooting did not reveal anything.

Today I was looking in the cabinet where the switch for the onboard tv antenna is located and saw that it was on. I turned off the Main power breaker, and the light remained on. This could have been the load that drained my batteries. I am not sure if it contributed, but the on/off switch at the water heater was also left in the on position.

Check these items. They may seem minor, but these vampires will kill your batteries!
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Old 09-14-2016, 12:32 PM   #32
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Not an issue on my TT. One can't operate the electric jack to hitch it up without power.

Quote:
Originally Posted by shelkol View Post
If you install the switch on your negative lead, you will no longer have power for your breakaway brakes should you forget to turn the switch on while towing.

Maybe your memory is better than mine.

I would feel much more comfortable installing the switch on the positive side and then wiring the breakaway brake power to the battery through a circuit breaker. That way if you forget to turn on the switch while towing, your breakaway brakes will still work.

Just my $0.02
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Old 09-14-2016, 12:35 PM   #33
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The CO and fire alerts can be battery drains. Also, clocks on the stereo systems. My battery is good for about two weeks or a little more if the cutoff switch was left on.
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Old 09-14-2016, 12:55 PM   #34
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Originally Posted by stevejahr View Post
This will work but may not be optimal. Around any lead/acid battery is a fairly hostile environment for metal with corrosive gasses emitted by the battery. So I prefer to keep exposed metal and electrical connections to a minimum inside the battery box.

On my Rockwood 2604 the factory installed a battery cut off switch in the frame cross member under the propane tanks (right in front of the battery box). I added a master circuit breaker next to it. The circuit breaker was an O'Reilly Autoparts item and could also be used as a master battery cut off switch.

I do like the frame mounted switches. This was my initial thought of installing one on the frame, just as yours is, but opted to install the one I did. Thanks, I will definitely keep tabs on the corrosion factor, that you mention, just as a preventative, should I need to rethink placement of my switch.
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Old 09-14-2016, 04:53 PM   #35
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sorry
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Old 09-14-2016, 07:55 PM   #36
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An update... I checked the battery this afternoon and it didn't show any further drain. I will find a suitable disconnect switch and install it before we head out for a camping trip this weekend.
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Old 09-14-2016, 08:01 PM   #37
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Quote:
Originally Posted by shelkol View Post
If you install the switch on your negative lead, you will no longer have power for your breakaway brakes should you forget to turn the switch on while towing.

Maybe your memory is better than mine.

I would feel much more comfortable installing the switch on the positive side and then wiring the breakaway brake power to the battery through a circuit breaker. That way if you forget to turn on the switch while towing, your breakaway brakes will still work.

Just my $0.02
Give that man a see-gar! Mine was wired that way from the factory.

I have a power jack so I would have to turn my switch on, but not everyone does, and you definitely want the breakaway brakes working. For me, it would be too easy to forget to turn the switch on when towing. Not likely, but why risk it.
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Old 09-14-2016, 08:38 PM   #38
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Quote:
Originally Posted by andymil View Post

I have a power jack so I would have to turn my switch on....

Same here. I have a power jack as well. So no chance of NOT forgetting to power on the battery when connecting up. Well, okay, maybe!.... And...if I do forget, there is always someone in the background telling me "I DID FORGET", or, "I TOLD YOU SO"! So, I'm good!
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Old 09-14-2016, 09:05 PM   #39
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I put a cut off switch on our 16 26tbud. Without it the battery would die within two days.
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Old 09-14-2016, 11:37 PM   #40
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Quote:
Originally Posted by tbln930 View Post
Not an issue on my TT. One can't operate the electric jack to hitch it up without power.
.

Exactly! I always install the cutoff on the negative side as I want EVERYTHING off, plus it is just easier. But I understand a lot of folks over think stuff
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