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Old 05-17-2019, 10:09 AM   #1
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RE: Battery Kill Switch - How To ...

I own a 2017 F.R. Heritage Glen 272RL. Currently have two 12 VDC Batteries connected in parallel.

I am not familiar with how to install or the type of device required to place the battery cut off switch on my camper batteries.

Would like some advice, please.
Where do I purchase device?
What type of device does this require?
Where do I install it?
How do I install it?


Wife & I are both retired and we only started camping 3 1/2 years ago when we purchased our first TT. Everything on repairs, modifications, problems, etc are all new to us. Always seeking advice from those more knowledgeable or experience.

Thank you in advance
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Old 05-17-2019, 10:26 AM   #2
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I would look up on YouTube. Probably the easiest way to learn..
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Old 05-17-2019, 10:45 AM   #3
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I have one like this..

Battery Switch, 6V 12V 24V 48V 60V Battery Disconnect Master Cutoff Switch for Marine Boat RV ATV UTV Vehicles, Waterproof Heavy Duty Battery Isolator Switch, 275/1250 Amps, On Off Position https://www.amazon.com/dp/B07HT19T5V..._DoT3Cb1D9HCAD

Easiest way to do this is probably to just mount it on the battery box (that's what I did).

If you have a lead positive wire with some extra length all you need is a couple of large ring crimp connects and a crimp tool.

Drill holes big enough for the wire to go through.

Cut the wire with enough length to get to the positive battery from wherever you plan to mount the new switch (I'd recommend on top) with some extra slack to pull off the lid.

Pull the wires through the holes you made for the wire in the lid. Install your wire crimps and then mount those to the lugs inside the switch.

Mount the switch to the top of the battery box.

Enjoy!
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Old 05-17-2019, 11:16 AM   #4
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go to the auto parts store and buy pre made cables the length you need, all done
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Old 05-17-2019, 12:40 PM   #5
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Thank you for the suggestions.

Since I had never attempted, I did not know where or how to begin.

I appreciate the help and direction to follow.
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Old 05-17-2019, 01:05 PM   #6
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1)Mount your switch or find a suitable mounting place.
2)Remove the cable or cables off your positive post and move it to one side of the switch.
3)Either buy a cable or have one made that connects from the other side of the switch back to your battery post.


These people make cables. You can specify length, cable size and end connector diameters.
http://www.genuinedealz.com/custom-cables



If you have more than one cable that goes from the positive post of the battery, make sure you move all of them to the switch except for the cable that parallels your batteries together.


I use this switch, Very high quality and you can flush mount it if that works for you.
https://shop.pkys.com/Blue-Sea-6006-...ch_p_1622.html
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Old 05-17-2019, 02:12 PM   #7
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Watch out for the size of your battery posts. Not all switches fit all batteries. Watch out for eyelets vs. clamps on your battery cables.

What I used required NO drilling and NO extra cables.

At the battery, I disconnected the battery cable that grounds to the coach.

I installed the disconnect switch on the negative terminal of the battery and the loose cable to the disconnect switch.

Done.

Look at your battery and then search Amazon for 'battery disconnect switch' to see many, many options.
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Old 05-17-2019, 02:23 PM   #8
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All good suggestion above. Only thing I disagree with is connecting to positive side.
Connect to negative side of the battery. I purchased switch and premade cables from Amazon.
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Old 05-17-2019, 02:31 PM   #9
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Originally Posted by DustyRoads View Post
All good suggestion above. Only thing I disagree with is connecting to positive side.
Connect to negative side of the battery. I purchased switch and premade cables from Amazon.
You can do that but the standard is on the positive. All RVs from the factory are on positive.
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Old 05-17-2019, 03:00 PM   #10
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Being that you have 2 batterys in parallel, you also need a switch between batteries. In that if they are not equal age ànd type one weaker will drain the other. Or remove a lead between.
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Old 05-17-2019, 03:08 PM   #11
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Many threads on how to install

https://www.google.com/search?q=batt...iverforums.com
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Old 05-17-2019, 07:19 PM   #12
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Being that you have 2 batterys in parallel, you also need a switch between batteries. In that if they are not equal age ànd type one weaker will drain the other. Or remove a lead between.

I prefer to use marine type switches that allow you to connect each battery to it's own terminal on the switch and then the "Common" to the main positive wire going off to the power distribution panel.

This way you can select battery 1, battery 2, Both, or OFF. No futzing with removing battery cables to isolate one from the other when storing.

The old reliable PERKO switches have been used on boats for decades and this one sells for less than $40 on Amazon.




Blue Sea Systems also makes similar switches but they had a fire in their factory last year and supplies on a lot of their products are limited.
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Old 05-17-2019, 07:30 PM   #13
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Being that you have 2 batterys in parallel, you also need a switch between batteries. In that if they are not equal age ànd type one weaker will drain the other. Or remove a lead between.
Not necessary.
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Old 05-17-2019, 08:18 PM   #14
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3-Way battery switch

As a ex-boater, I would recommend going with a battery selector switch assuming you have dual batteries (which I also recommend). That way you can select either battery 1 or battery 2 to power your trailer overnight. This way, the worst that can happen is you run down only one battery. When towing the TV, turn the switch to "all" to recharge both batteries while underway. If leaving the TT two or more nights, turn the switch to "Off" to turn off both batteries. Most marine stores carry this selector switch or you can order on-lime from Amazon. I like both the Guest and Perko brand battery selector switches. Installation is rather simple and instructions are included.
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Old 05-17-2019, 10:08 PM   #15
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Quote:
Originally Posted by KEN9XL View Post
I own a 2017 F.R. Heritage Glen 272RL. Currently have two 12 VDC Batteries connected in parallel.

I am not familiar with how to install or the type of device required to place the battery cut off switch on my camper batteries.

Would like some advice, please.
Where do I purchase device?
What type of device does this require?
Where do I install it?
How do I install it?


Wife & I are both retired and we only started camping 3 1/2 years ago when we purchased our first TT. Everything on repairs, modifications, problems, etc are all new to us. Always seeking advice from those more knowledgeable or experience.

Thank you in advance
You should also get BUS-bar for all the positive cables going to the batteries.
IE: (Amazon) Power Distribution Block with Cover
Click image for larger version

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ID:	204848
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Old 05-17-2019, 11:34 PM   #16
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There are battery banks out there in RVs that have 10 plus batteries in parallel. Guess what...they don't have switches between all those batteries. Just keep them in parallel and don't switch between them. One disconnect switch for the whole bank is all you need. The more you mess with switches playing the switching game, turning one on at a time, those batteries will become unbalanced from each other and then they will never work in parallel properly again.
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Old 05-17-2019, 11:36 PM   #17
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Quote:
Originally Posted by rk06382 View Post
You should also get BUS-bar for all the positive cables going to the batteries.
X2
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Old 05-18-2019, 09:21 AM   #18
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I used a simple switch similar to others in this post for the main power.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I use a separate keyed switch for the power tongue jack. Improves security.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Mounted both on the side of the battery box.
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Old 05-18-2019, 03:35 PM   #19
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Quote:
Originally Posted by rk06382 View Post
You should also get BUS-bar for all the positive cables going to the batteries.
IE: (Amazon) Power Distribution Block with Cover
Attachment 204848


Thank you.
I like that idea on bus bar instead of multiple wires connected to cut off switch.
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Old 05-18-2019, 04:00 PM   #20
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I too am in the camp of a battery selector switch. I can run one, the other or both but not usually both as my batteries are rarely the same age and keeping them separate, keeps them performing longer.

I always mount on the positive side and wire it so it cuts off everything.
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