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05-19-2011, 08:58 PM
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#1
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Junior Member
Join Date: Jun 2010
Posts: 16
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How to wire two Battery's??
Just added a second battery to my jayfeather 197. I am so confused on how to hook up the batteries. I'm assuming I want to parallel the batteries and not install them in a series? I heard you can fry your electrical if you have them in a series? - to - + to+ ????? Please help!!
Thanks Again!! Great Site!!
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05-19-2011, 09:05 PM
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#2
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Member
Join Date: Aug 2010
Location: Placerville, CA (near Lake Tahoe)
Posts: 80
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Search for "battery" or "batteries" and you'll find lots of info on this site. I did a quick check and found....
http://www.jaycoowners.com/showthrea...hlight=battery
Jim
__________________
Jim and Barbara Manley; 2 toy poodles, Louis and Isabelle; 26BH; Tundra
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05-19-2011, 09:11 PM
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#3
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Senior Member
Join Date: Feb 2011
Location: Germantown, TN
Posts: 4,923
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If they are both 12 volt -then parallel - Plus to Plus - Neg to Neg....
Parallel - same voltage
Series - add the voltages (how you do 6 Volt batteries)
I recommend this site as well -- The 12 Volt Side of Life
Remember - pics posted to the mod section when you get done
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05-19-2011, 09:25 PM
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#4
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Junior Member
Join Date: Jun 2010
Posts: 16
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I get the + to + , - to - part, but im confused with the wiring from the trailer. Does the negative from the trailer go to the negative on one battery while the positive wire from the trailer go to the other positive on the other battery? Thanks Guys!!
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05-19-2011, 09:54 PM
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#5
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Senior Member
Join Date: Feb 2011
Location: Germantown, TN
Posts: 4,923
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Pull the (+) and (-) off the same battery for best results.
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05-19-2011, 10:03 PM
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#6
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Junior Member
Join Date: Jun 2010
Posts: 16
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Im sorry tafische, what do you mean?
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05-19-2011, 10:30 PM
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#7
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Senior Member
Join Date: Sep 2010
Location: PNW
Posts: 5,195
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Quote:
Originally Posted by tafische
Pull the (+) and (-) off the same battery for best results.
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Why is that?
__________________
Bill
2011 Dodge Ram 1500 HEMI Quad Cab
2011 Jay Flight 26BH
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05-19-2011, 10:31 PM
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#8
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Junior Member
Join Date: Jun 2010
Posts: 16
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Im so confused!!
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05-19-2011, 10:33 PM
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#9
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Junior Member
Join Date: Jun 2010
Posts: 16
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Hey Smoker Bill, I was looking at your post regarding your mod with pics. is your set up parallel or in a series? Thanks
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05-20-2011, 12:32 AM
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#10
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Senior Member
Join Date: Oct 2010
Posts: 414
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Quote:
Originally Posted by clossan
I get the + to + , - to - part, but im confused with the wiring from the trailer. Does the negative from the trailer go to the negative on one battery while the positive wire from the trailer go to the other positive on the other battery? Thanks Guys!!
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For a picture, surf: http://i178.photobucket.com/albums/w...Vbatteries.jpg
Note: Each battery's "-" cable can be connected to seperate Frame Ground points. re: Different steel bolts on the steel tonque.
For total 110V + 12V diagram, surf: http://i178.photobucket.com/albums/w...VDiagram-1.jpg
Hope this helps...
.
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05-20-2011, 12:54 AM
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#11
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Senior Member
Join Date: Jan 2011
Location: Phoenix AZ
Posts: 278
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Quote:
Originally Posted by clossan
I get the + to + , - to - part, but im confused with the wiring from the trailer. Does the negative from the trailer go to the negative on one battery while the positive wire from the trailer go to the other positive on the other battery? Thanks Guys!!
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Exactly....That's the best way to connect two 12v battery's to your trailer.
Look at configuration-7.
__________________
2010 Dodge Ram 2500 Big Horn 4x4
2011 Jayco Eagle Super Lite 30.5RLS
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05-20-2011, 04:52 AM
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#12
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Moderator Emeritus
Join Date: Apr 2011
Location: Michigan
Posts: 9,424
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Thus far we are assuming the OP is adding a second 12V battery (he has yet to confirm), so just in case:
Bob
__________________
2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2002 GM 2500HD 6.0L/4:10 (retired)
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (Strait-Line)
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05-20-2011, 07:06 AM
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#13
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Senior Member
Join Date: Feb 2011
Location: Germantown, TN
Posts: 4,923
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Quote:
Originally Posted by SmokerBill
Why is that?
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My opinion is that it is best to be on the same battery for a couple of reasons....
- if you have a problem with one of your cables between the batteries, you don't loose complete power (ie - less chance of problem)
- it gives you the flexibility to remove one battery if you want to charge it or do other maintenance.
- I am just speculating, but I would think it could be an issue if you are pulling a heavy load. If you had too much resistance between the connecting cables it would create a differential in voltage between the two batteries...maybe that is not an issue....but not sure....
Anyway, those are my thoughts....would love to hear differing opinion if someone thinks just the opposite.
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05-20-2011, 07:17 AM
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#14
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Junior Member
Join Date: Jun 2010
Posts: 16
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Yes, I added a second 12v. Thanks
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05-20-2011, 07:19 AM
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#15
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Senior Member
Join Date: Sep 2010
Location: PNW
Posts: 5,195
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Quote:
Originally Posted by clossan
Hey Smoker Bill, I was looking at your post regarding your mod with pics. is your set up parallel or in a series? Thanks
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They are connected in parallel, with the positive posts of each battery connected to each other, and same for the negative posts.
I had no problem making the parallel connection, but I was also unsure of which posts of the two batteries to use to make the connection to the trailer. In found diagrams and instructions for doing it both ways; using the negative post of one battery, and the positive post of the other one- or using both the negative and positive off of one battery.
I opted for the former- using the negative post of one battery, and the positive post of the other one - because I thought there might be some benefit when charging the batteries. But that was just a guess.
Actually, I don't think it really matters how you make the trailer connection from the parallel-connected batteries. And that's why I asked Tafische why he believes that using the pos/neg from the same battery is the best way.
I'm really curious about this one.
__________________
Bill
2011 Dodge Ram 1500 HEMI Quad Cab
2011 Jay Flight 26BH
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05-20-2011, 09:11 AM
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#16
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Junior Member
Join Date: May 2011
Posts: 9
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I have a 36 ft 5er and only one battery. Do you recommend I add a second one. (No boondocking)
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05-20-2011, 11:21 AM
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#17
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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Quote:
Originally Posted by lowfly
I have a 36 ft 5er and only one battery. Do you recommend I add a second one. (No boondocking)
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not if you never boondock... with one battery you can spend ONE night in a parking lot but that would be about it...
__________________
Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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05-20-2011, 12:38 PM
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#18
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Senior Member
Join Date: Sep 2010
Location: PNW
Posts: 5,195
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Quote:
Originally Posted by tafische
My opinion is that it is best to be on the same battery for a couple of reasons....
- if you have a problem with one of your cables between the batteries, you don't loose complete power (ie - less chance of problem)
- it gives you the flexibility to remove one battery if you want to charge it or do other maintenance.
- I am just speculating, but I would think it could be an issue if you are pulling a heavy load. If you had too much resistance between the connecting cables it would create a differential in voltage between the two batteries...maybe that is not an issue....but not sure....
Anyway, those are my thoughts....would love to hear differing opinion if someone thinks just the opposite.
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I didn't see that you posted ahead of me. You make some good points. I think I used #4 multi-strand cable between the batteries, so I don't think voltage drop would be a problem under extreme loads, at least there. But I do think the wiring from the batteries to the power converter could be a little stouter. When the snow's gone, I think I'll pull out my meter, turn on all the lights and the furnace, then check the DC voltage at the battery terminals, then at the converter. I bet there's a drop between the two points.
But it's cold and wet outside now, and it's so nice and warm in here! I'm just gonna stay inside and soak up the heat. :hihi:
__________________
Bill
2011 Dodge Ram 1500 HEMI Quad Cab
2011 Jay Flight 26BH
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05-20-2011, 01:42 PM
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#19
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Moderator Emeritus
Join Date: Apr 2011
Location: Michigan
Posts: 9,424
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Quote:
Originally Posted by SmokerBill
snip...... But I do think the wiring from the batteries to the power converter could be a little stouter.....snip
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Bill,
I agree, and I believe that Jayco uses 10 gauge (maybe 8) from the converter/charger to the battery. My Jayco converter/charger is located at the rear of my TT, so I'm sure there's a drop with my set-up once it lands at the battery. I plan to up-grade my existing 2-stage converter/charger to a PD 3-stage converter/charger in the near future, but I plan to locate it in my front pass-thru storage area which will be only a couple of feet away from my battery bank.
One thing that I picked up over the years when banking batteries is make the cable lengths the same between the batteries (balance), and go heavy on the cable gauge. With my (2) 6V deep cycle batteries (in-series) I used a 1-gauge cable between the two. http://www.jaycoowners.com/showthread.php?t=2752
Bob
__________________
2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2002 GM 2500HD 6.0L/4:10 (retired)
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (Strait-Line)
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05-20-2011, 04:43 PM
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#20
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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Quote:
Originally Posted by tafische
My opinion is that it is best to be on the same battery for a couple of reasons....
- if you have a problem with one of your cables between the batteries, you don't loose complete power (ie - less chance of problem)
- it gives you the flexibility to remove one battery if you want to charge it or do other maintenance.
- I am just speculating, but I would think it could be an issue if you are pulling a heavy load. If you had too much resistance between the connecting cables it would create a differential in voltage between the two batteries...maybe that is not an issue....but not sure....
Anyway, those are my thoughts....would love to hear differing opinion if someone thinks just the opposite.
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The biggest problem with they way you are suggesting is it ages battery 1 faster than battery 2 as all voltage must go through 1 to get to 2. With taking pos and neg off of opposite batteries they all age the same.. I know this is a purest point.. On my 6-6 volt system the power goes in pos on the N side Neg on the S side.. and comes out Pos on the S side and Neg on the N side ... ahhhhh I hope that is clear
LOL
__________________
Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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