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Old 04-09-2012, 03:51 PM   #1
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Battery Disconnect Switch

I currently don't have one on my trailer. My last trailer had one and I never used it. Dumb question: Why should I have one and when would I use it?
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Old 04-09-2012, 04:08 PM   #2
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I can only speak from my experience.

I use it every time I use my fast charger running off my generator.
I use it every time I leave the camper parked between trips (unless it is in my driveway where I have my shore power connection).
I use it to easily disconnect battery power when working on the electrical system.
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Old 04-09-2012, 04:20 PM   #3
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Quote:
Originally Posted by rkswyo View Post
I currently don't have one on my trailer. My last trailer had one and I never used it. Dumb question: Why should I have one and when would I use it?
rkswyo - Ditto on what Herk said. It serves the same function as actually removing a battery from a vehicle to prevent it from becoming discharged - but instead of actually disconnecting the neg and pos cables and removing it, you simply throw a switch to accomplish the sane thing.

Most common use I have for it is to keep the battery from becoming discharged from lack of use when shore power is not being used.
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Old 04-09-2012, 04:33 PM   #4
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I installed a push/pull 75amp switch from Northern for about $8 or $9. We used them for years in our race cars and never had a problem. There it was strictly for safety to kill the battery in case of a rollover and an electrical spark igniting the alchohol or gas.
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Old 04-09-2012, 04:39 PM   #5
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When my trailer is at home it is always hooked to shore power. You guys bring up some other good points though. I will add it to my mod list.
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Old 04-09-2012, 04:49 PM   #6
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Also I have two battery and can select
battery 1 on. Battery 2 off
Battery 2 on. Battery 1 off
batteries 1 and 2 on
Or batteries both off
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Old 04-09-2012, 04:49 PM   #7
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Originally Posted by dunnnc View Post
I installed a push/pull 75amp switch from Northern for about $8 or $9. We used them for years in our race cars and never had a problem. There is was strictly for safety to kill the battery in case of a rollover and an electrical spark igniting the alchohol or gas.
This is what my last trailer had. Came that way from the factory. They had it mounted in a poor place though and occasionaly an errant rock would kick up and push the switch in. First time it happened it left me scratching my head.
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Old 04-09-2012, 05:56 PM   #8
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X 6 all of the above. I had to install my own too and love it. My battery is kinda hard to get access to. Not really just an excuse
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Old 04-09-2012, 05:59 PM   #9
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I mounted the 75 amp switch inside the front storage compartment on the back wall next to the batteries.
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Old 04-09-2012, 06:03 PM   #10
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Mine came with one and it is located below the refridgerator. If it did not have one I would have definitely installed one. There also an in line fuse located next to battery. One project on my list is to try to make a one line schematic and then a wiring diagram of the system...unless there is one already available??
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