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Old 09-11-2018, 07:37 AM   #21
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Thatís looks pretty simple...lol. I just picked up my travel trailer on Friday and I havenít 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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Old 09-11-2018, 08:01 AM   #22
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Thatís looks pretty simple...lol. I just picked up my travel trailer on Friday and I havenít 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
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.
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Old 09-11-2018, 10:11 AM   #23
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Where is your ground? I just didnít see it.
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Old 09-11-2018, 10:28 AM   #24
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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
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Old 09-11-2018, 10:35 AM   #25
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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 donít want to take the battery cover off each time I need to shut it off. Thanks.
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
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Old 09-11-2018, 11:11 AM   #26
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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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Old 09-11-2018, 11:53 AM   #27
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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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Old 09-11-2018, 11:54 AM   #28
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Is the picture with the Interstate batteries correct? I just donít see where the ground wire is.
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Old 09-11-2018, 12:29 PM   #29
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Is the picture with the Interstate batteries correct? I just donít see where the ground wire is.
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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Old 09-11-2018, 12:53 PM   #30
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Do you have any pictures or anything showing me the correct way to do it?
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Old 09-11-2018, 12:56 PM   #31
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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.
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
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Old 09-11-2018, 12:56 PM   #32
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Is the picture with the Interstate batteries correct? I just donít see where the ground wire is.
It is on the bottom battery coming out the side.
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Old 09-11-2018, 12:58 PM   #33
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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.
Not true.

Hot coming off top battery positive and ground coming off bottom battery negative.
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Old 09-11-2018, 12:59 PM   #34
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Where is your ground? I just didnít see it.
Long black wire coming out the side by the bottom battery.
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Old 09-11-2018, 01:01 PM   #35
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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
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.
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Old 09-11-2018, 01:01 PM   #36
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Not true.

Hot coming off top battery positive and ground coming off bottom battery negative.
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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Old 09-11-2018, 01:03 PM   #37
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The negative is coming off that disconnect off the top battery.
See what I mean Ö

You were not referring to this one.
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Old 09-11-2018, 01:05 PM   #38
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See what I mean Ö

You were not referring to this one.
Yes. That one is correct.

Both pictures had interstate batteries!
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Old 09-11-2018, 01:26 PM   #39
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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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Old 09-11-2018, 01:40 PM   #40
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Hey Herk....

Do you have a picture of how itís connected to the disconnect switch?
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