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11-03-2018, 08:23 AM
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#1
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Member
Join Date: Jun 2016
Location: Moncton, New Brunswick
Posts: 33
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Four 6v batteries with inverter hookup
Purchased a new Cedar Creek 5'er this year and unlike my previous trailers it has four 6 volt batteries with an inverter to run the fridge as well as solar prep. (Solar not hooked up). I researched and understand running the two banks of 6 volt batteries parallel and in sequence to create one big 12 volt. I get that and my four batteries were hooked up according to the research I've conducted.
My question or concern is, from the dealership, the trailer battery cables, positive and negative were hooked up to one set or bank of two batteries and the cable for the inverter, positive and negative, were hooked up to the other set or bank of two batteries.
1. Shouldn't the negative cables of both the inverter and battery be hooked up to the negative post of the first bank of two batteries and the positive cables of both be hooked up to the furthest positive post of the second set? 2. Or is there a reason to have the inverter hooked on one bank of two batteries and the battery cables hooked on the other bank?
3. Or does it really matter?
Hope this all makes sense.
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11-03-2018, 08:50 AM
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#2
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Site Team
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
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In all honesty, for your application, it really doesn't matter. Your fridge isn't going to draw enough power that it's really going matter.
I'm sure others will have a different opinion, and that's fine. But if it were me, I wouldn't worry about it much.
__________________
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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11-03-2018, 08:55 AM
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#3
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Senior Member
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 7,184
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My dealer had the four batteries hooked up as having two 12 volt batteries but one set of batteries was not getting charged up. I hooked up the batteries so I would have one large 12 volt battery. Then I hooked the inverter and the converter up so all the batteries would get charged. A good article to read is the 12 volt side of life, just google it. It has a lot of good information. I replaced the cheap 6 volt batteries with Trojans. I kinda wish I had installed AGM batteries
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11-03-2018, 09:02 AM
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#4
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Senior Member
Join Date: Dec 2009
Location: Napa Valley, CA
Posts: 513
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I don't think it matters assuming that you have the batteries wired correctly. I have the same bank of 4 batteries... two sets of 6 volts in series and then those two pairs in parallel to create a 12v bank.
In my case, the main factor in how to wire to the trailer was keeping the heavy duty cables that run to the inverter as short as possible to minimize amperage loss when using high amp appliances like the microwave.
__________________
2015 Rockwood A128S
2010 Rockwood 2604
2014 Ford F-250 CC SB 2WD
2008 Toyota Sequoia 2WD
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11-03-2018, 04:33 PM
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#5
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Senior Member
Join Date: Mar 2018
Posts: 420
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Doesn't matter.
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11-04-2018, 05:38 AM
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#6
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Member
Join Date: Jun 2016
Location: Moncton, New Brunswick
Posts: 33
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OK thanks, my biggest worries were if the trailer or converter cables was only hooked up to one set or bank of two, was it charging up all four while plugged into shore power.
Tks again
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11-04-2018, 09:51 AM
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#7
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Senior Member
Join Date: Jul 2018
Location: Opelousas, LA
Posts: 168
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Just some info for folks. We have a Rockwood 8332BS that we bought in May. When I was doing the walkthrough at dealership, the tech informed me that they wire the 2 12 volt batteries so that all 12 volt systems draw off both. What he said is from factory they are wired separate. 1 for res. refrigerator. and other 1 for the rest of 12 volt systems. We were delayed in leaving the house and refrigerator/inverter etc. drew off batteries for 8 hours and battery level only lost 2 bars on indicator.
__________________
2020 Cedar Creek 38DBRK 5'r
2020 Chevy 2500HD Duramax 4X4
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11-04-2018, 09:56 AM
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#8
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Senior Member
Join Date: Jun 2013
Location: Between Pickles Gap and Toad Suck, AR
Posts: 6,070
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Quote:
Originally Posted by roddiemacdonald
Purchased a new Cedar Creek 5'er this year and unlike my previous trailers it has four 6 volt batteries with an inverter to run the fridge as well as solar prep. (Solar not hooked up). I researched and understand running the two banks of 6 volt batteries parallel and in sequence to create one big 12 volt. I get that and my four batteries were hooked up according to the research I've conducted.
My question or concern is, from the dealership, the trailer battery cables, positive and negative were hooked up to one set or bank of two batteries and the cable for the inverter, positive and negative, were hooked up to the other set or bank of two batteries.
1. Shouldn't the negative cables of both the inverter and battery be hooked up to the negative post of the first bank of two batteries and the positive cables of both be hooked up to the furthest positive post of the second set? 2. Or is there a reason to have the inverter hooked on one bank of two batteries and the battery cables hooked on the other bank?
3. Or does it really matter?
Hope this all makes sense.
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Same trailer, same setup. Works fine. Mine is 6v battery 1 and 3 are hooked together in series to make 12v #1. Then 6v battery 2 and 4 are hooked together in series to make 12v #2.
Then 12v #1 and 12v #2 are hooked together in parallel to make one 12v system. The coach neg goes to 12v #1 and the pos goes to 12v #2.
That's not the only way to do it. But it sounds like it's what you have also. And it works.
__________________
"Next to prayer, fishing is the most personal relationship of man" Herbert Hoover
"American by Birth, Southern by the Grace of God"Lewis Grizzard
FROG AR-0019-242
2016 GMC Denali 3500Dually--2017 CC 36CKTS
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11-04-2018, 09:59 AM
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#9
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Senior Member
Join Date: Jun 2013
Location: Between Pickles Gap and Toad Suck, AR
Posts: 6,070
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If I had done it myself upon original install, I'd have done it like this diagram.
__________________
"Next to prayer, fishing is the most personal relationship of man" Herbert Hoover
"American by Birth, Southern by the Grace of God"Lewis Grizzard
FROG AR-0019-242
2016 GMC Denali 3500Dually--2017 CC 36CKTS
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11-04-2018, 03:13 PM
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#10
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Member
Join Date: Jun 2016
Location: Moncton, New Brunswick
Posts: 33
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So would you hook up the converter pos & neg cables and the inverter pos and neg cables to the same out going battery posts?
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11-04-2018, 03:14 PM
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#11
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Senior Member
Join Date: Jun 2013
Location: Between Pickles Gap and Toad Suck, AR
Posts: 6,070
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Quote:
Originally Posted by roddiemacdonald
So would you hook up the converter pos & neg cables and the inverter pos and neg cables to the same out going battery posts?
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Sure. Shouldn't matter.
__________________
"Next to prayer, fishing is the most personal relationship of man" Herbert Hoover
"American by Birth, Southern by the Grace of God"Lewis Grizzard
FROG AR-0019-242
2016 GMC Denali 3500Dually--2017 CC 36CKTS
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