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09-11-2018, 07:37 AM
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#21
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Member
Join Date: Sep 2018
Posts: 71
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That’s looks pretty simple...lol. I just picked up my travel trailer on Friday and I haven’t even looked at how my batteries are set up but they did say they are in parallel with each other so I will check it out and see. Thanks
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09-11-2018, 08:01 AM
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#22
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by CUBS_WIN
That’s looks pretty simple...lol. I just picked up my travel trailer on Friday and I haven’t even looked at how my batteries are set up but they did say they are in parallel with each other so I will check it out and see. Thanks
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If both camper feed wires are on one battery it will "work"; just the one with both feed wires will work harder than the others.
When you have a "bank" of batteries, it electrically acts as one battery. The "inter-plate" resistance determines how current flows inside the battery.
When more than one battery is involved, the resistance of the cables and connections becomes part of the "inter-battery" resistance and the voltage drop across that extra wire and connections is not insignificant.
The battery connected directly has the lowest resistance and will charge and discharge faster than the battery with the "extra load" of cables, etc; thus it uses up its life faster than the "loafing" battery(s).
Wiring your batteries as shown will give both batteries an identical current path, so each will work equally hard.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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09-11-2018, 10:11 AM
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#23
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Member
Join Date: Sep 2018
Posts: 71
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Where is your ground? I just didn’t see it.
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09-11-2018, 10:28 AM
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#24
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Senior Member
Join Date: Apr 2015
Location: Denver, NC
Posts: 2,607
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Here is an old pic from years ago before getting my Forest River...I'm assuming I had it hooked up right I never had any issues
__________________
2015 Ram 2500 CTD,CC,SB,4x4
2016 Rockwood 2703 Emerald Edition
Husky CenterLine TS Hitch
TST 507 TPMS
Progressive Industries EMS-PT30X
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09-11-2018, 10:35 AM
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#25
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Senior Member
Join Date: Mar 2014
Posts: 3,083
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Quote:
Originally Posted by CUBS_WIN
I have a 2019 Wildwood 30KQBSS. I have dual batteries connected in parallel with each other. Does anyone have a diagram or pictures showing me how to hookup a battery disconnect switch. I have seen videos of hooking one up with a single battery but just want to see pictures or video of dual batteries. I want a good safe switch and one that is not hooked to the battery post. I don’t want to take the battery cover off each time I need to shut it off. Thanks.
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If you have parallel batteries, the ideal is a disconnect that can also select either or both batteries. This lets you use either battery singly, both in parallel, or both off. There are numerous marine battery switches set up to do just that (Blue Sea is a common brand that I use, and is available from Amazon and other sources). Wiring - I disconnect the positive side as per normal marine practice - has the cables from both positive battery terminals coming to the 1 and 2 positions of the switch, and the positive wire coming from the trailer attaches to the output/ boat/ camper terminal.
Now that I have 2 6V GC-2 batteries, I use the same switch but have nothing connected to the #2 battery terminal.
hope this helps
Fred W
2019 Flagstaff TBHW A-frame
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09-11-2018, 11:11 AM
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#26
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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Discharging the batteries separately is a bad idea. Just keep them in parallel. It makes life so much easier charging them back up. Battery banks are put in parallel all the time. Most motor homes have serial/parallel batteries of 4 and often 8 batteries and you don't see them dividing them up.
And ignore the people that claim that parallel batteries discharge each other. That's just ignorance of how batteries work. Just make sure your batteries are identical in age, manufacturer, size and type.
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09-11-2018, 11:53 AM
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#27
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Member
Join Date: Sep 2018
Posts: 71
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They are brand new batteries that were just put in last Friday from the dealership when I picked it up.
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09-11-2018, 11:54 AM
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#28
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Member
Join Date: Sep 2018
Posts: 71
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Is the picture with the Interstate batteries correct? I just don’t see where the ground wire is.
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09-11-2018, 12:29 PM
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#29
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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Quote:
Originally Posted by CUBS_WIN
Is the picture with the Interstate batteries correct? I just don’t see where the ground wire is.
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It's not. Has both negative and positive cables going to the trailer coming off same battery.
Also don't use one of those crappy disconnect switches.
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09-11-2018, 12:53 PM
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#30
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Member
Join Date: Sep 2018
Posts: 71
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Do you have any pictures or anything showing me the correct way to do it?
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09-11-2018, 12:56 PM
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#31
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Senior Member
Join Date: Apr 2015
Location: Denver, NC
Posts: 2,607
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Quote:
Originally Posted by babock
It's not. Has both negative and positive cables going to the trailer coming off same battery.
Also don't use one of those crappy disconnect switches.
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That was my old setup...I never knew it was incorrectly setup somehow I managed to get about 5 years out of those batteries...I only have a one battery setup now with my new trailer so I never paid any attention to how to setup a two battery setup up until reading this thread glad I did
__________________
2015 Ram 2500 CTD,CC,SB,4x4
2016 Rockwood 2703 Emerald Edition
Husky CenterLine TS Hitch
TST 507 TPMS
Progressive Industries EMS-PT30X
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09-11-2018, 12:56 PM
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#32
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by CUBS_WIN
Is the picture with the Interstate batteries correct? I just don’t see where the ground wire is.
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It is on the bottom battery coming out the side.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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09-11-2018, 12:58 PM
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#33
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by babock
It's not. Has both negative and positive cables going to the trailer coming off same battery.
Also don't use one of those crappy disconnect switches.
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Not true.
Hot coming off top battery positive and ground coming off bottom battery negative.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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09-11-2018, 12:59 PM
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#34
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by CUBS_WIN
Where is your ground? I just didn’t see it.
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Long black wire coming out the side by the bottom battery.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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09-11-2018, 01:01 PM
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#35
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by Ejs4029
Here is an old pic from years ago before getting my Forest River...I'm assuming I had it hooked up right I never had any issues
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THIS dual battery set up is the one not correct. Both trailer wires coming off top battery.
Its confusing (to me anyway) which battery set up folks were referring to.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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09-11-2018, 01:01 PM
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#36
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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Quote:
Originally Posted by Herk7769
Not true.
Hot coming off top battery positive and ground coming off bottom battery negative.
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The negative is coming off that disconnect off the top battery.
I am taking about the picture with the black dirty batteries.
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09-11-2018, 01:03 PM
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#37
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by babock
The negative is coming off that disconnect off the top battery.
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See what I mean …
You were not referring to this one.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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09-11-2018, 01:05 PM
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#38
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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Quote:
Originally Posted by Herk7769
See what I mean …
You were not referring to this one.
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Yes. That one is correct.
Both pictures had interstate batteries!
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09-11-2018, 01:26 PM
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#39
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Member
Join Date: Sep 2018
Posts: 71
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So the one with the cleaner Interstate batteries is correct?...lol. And the ground wire is the black one on the bottom of the picture?
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09-11-2018, 01:40 PM
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#40
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Member
Join Date: Sep 2018
Posts: 71
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Hey Herk....
Do you have a picture of how it’s connected to the disconnect switch?
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