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11-07-2006, 08:11 PM
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#1
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Junior Member
Join Date: Jan 2005
Location: Denver, Co
Posts: 5
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What are the advantages of 2 6-volt batteries in series vs two 12 volt batteries in parallel?
I am looking at wanting to increase the battery life between charges.
When needing to run the heat with the blower a single 12 volt will not get me through the night so I have to run the gen to keep all working and recharge the current deep cycle 12 volt battery.
Thanks for any help in advance
__________________
2002 Dodge 2500 HD 4x4 Diesel, Pullrite, Brake Smart,Jacobs ex brake, 4",
Isopro Boost, Pyro, Fuel Pressure, Wife, 2 Dogs
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11-07-2006, 08:11 PM
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#2
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Junior Member
Join Date: Jan 2005
Location: Denver, Co
Posts: 5
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What are the advantages of 2 6-volt batteries in series vs two 12 volt batteries in parallel?
I am looking at wanting to increase the battery life between charges.
When needing to run the heat with the blower a single 12 volt will not get me through the night so I have to run the gen to keep all working and recharge the current deep cycle 12 volt battery.
Thanks for any help in advance
__________________
2002 Dodge 2500 HD 4x4 Diesel, Pullrite, Brake Smart,Jacobs ex brake, 4",
Isopro Boost, Pyro, Fuel Pressure, Wife, 2 Dogs
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11-07-2006, 08:36 PM
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#3
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 32,239
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You'll find hours of reading on this subject by running a search from the box at the top of the main forum page. Ths short version is: group 29 continous use battery from walmart has (I think) 210AH capacity. T105 golf cart batteris have a little more capacity, and last years longer. The drawback is they weigh 66# each, and usually cost more because they are sturdier built. For the best battery option check out this DEKA modular battery. It has a capacity of 1,350AH, putting deep cycle and golf cart batteries to shame. Expensive, Yes. You really do get what you pay for!
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;GS Life member,FMCA " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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11-08-2006, 05:34 PM
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#4
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Senior Member
Join Date: May 2002
Location: Idaho Falls, ID, USA
Posts: 581
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Log on to http://www.phrannie.org/ he has a whole chapter on 12V systems
__________________
2017 GMC 3500 4x4 Denali Duramax
2019 Outdoor RV (ORV) Timber Ridge 24RKS
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11-08-2006, 07:15 PM
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#5
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Junior Member
Join Date: Jan 2005
Location: Denver, Co
Posts: 5
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Thanks I like the information on the phrannie.org site.
Man are those DEKA batteries $$$$$
__________________
2002 Dodge 2500 HD 4x4 Diesel, Pullrite, Brake Smart,Jacobs ex brake, 4",
Isopro Boost, Pyro, Fuel Pressure, Wife, 2 Dogs
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11-09-2006, 05:04 AM
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#6
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Senior Member
Join Date: Feb 2000
Location: Navarre, Ohio
Posts: 262
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Here is a link to a website that will tell you everything you wanted to know about deep cycle batteries and more.
Battery FAQ
Ron
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Gulf Stream RV Owners Forum www.gsowners.com
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11-09-2006, 07:10 PM
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#7
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Registered User
Join Date: Aug 2002
Location: Socorro, NM (until ?)
Posts: 1,552
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by nascar-co:
Thanks I like the information on the phrannie.org site.
</div></BLOCKQUOTE>
Then you may want to save the webpages for future reference, perhaps on a CD-ROM.
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01-24-2010, 01:19 PM
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#8
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Senior Member
Damon Owners Club Workhorse Chassis Owner Forest River Owners Club Ford Super Duty Owner
Join Date: May 2005
Location: Parker, CO
Posts: 3,251
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I know this thread is 1172 days old but I either bring it back to life or start a new thread, so here's my question.
I have 2- 6 volt batteries now and they are more than 5 years old. It seems they don't last as long as they used to. So I will change them soon.
My battery box has room for 3 batteries. Obviously I can't use 3- 6 volt batteries in series. However, I could use 3- 12 volt batteries in parallel.
So my choices are 2- 6 volt or 3 12 volt batteries. Which would be better?
__________________
Max49
2018 Forest River Georgetown F-53
'08 Jeep Wrangler Toad
Denver, Colorado
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01-24-2010, 02:07 PM
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#9
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Senior Member
Country Coach Owners Club
Join Date: Jan 2006
Location: Northern California
Posts: 5,908
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I changed from 2, 8D, 12V batteries to 4, 6v Trojan Golf Cart batteries.
I gained marginal amp hours (420 vs 440) , but at least I could lift the 6V batteries to clean the battery compartment.
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Dean
1995 38' CC Magna #5280 **** Sold after 21 years of enjoyment.
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01-24-2010, 04:17 PM
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#10
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 28,504
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6V vs 12v is not the issue - it's the quality of the deep cycle battery involved. These days 6v's are golf cart batteries, designed from the ground up to be rugged and deep-cycled repeatedly. Most 12v's you can buy are essentially 12v starting batteries, perhaps with some improvements for better deep cycle performance, but not fundamentally different in design.
But amp-hours is what you need so 3 x 12v is the way to go in your case. Trojan and Lifeline make some pretty darn good 12v deep cycles, but they are really pricey. The Minnkota brand 12v deep cycle, made by Johnson Controls, isn't too shabby and the price is far better (available at Walmarts). They probably won't last 5 years like your 6v golf carts, though.
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is now West Palm Beach, FL
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01-24-2010, 05:00 PM
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#11
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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I agree with RV Roamer, in your case you need the most AH's (ampere hours) as possible found in a 12 volt deep cycle battery. So when you are looking, compare the AH's and size, usually the heftier AH batteries are the largest ones too. Size goes hand in hand with AH's.
Dr4Film ----- Richard.
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01-24-2010, 06:26 PM
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#12
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Senior Member
Damon Owners Club Workhorse Chassis Owner Forest River Owners Club Ford Super Duty Owner
Join Date: May 2005
Location: Parker, CO
Posts: 3,251
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Thanks guys, I'll check the prices, amp hrs, and availability locally and make my decision.
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Max49
2018 Forest River Georgetown F-53
'08 Jeep Wrangler Toad
Denver, Colorado
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01-25-2010, 12:08 PM
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#13
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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I see very little difference provided the batteries are of equal capacity and quality.. Baically it's one jumper wire (to hook 2 in series) or 2 (to hook two in parallel) and that is the only major difference. page 2
However, up till rather recently finding good 12 volt deep cycle batteries was not easy to do.. Today it's easier and it will get easier as time goes on.
Still, I think you should look at the cost, Often you can find six volt golf car batteries at fairly low prices compared to the same (220) number of amp hours worth of 12 volt.
And that. is the major difference right there.
Do remember if the battery says "Marine" on it (even if Marine is followed by /Deep Cycle) that is a starting battery.. Now, 110 amp hours of battery is 110 amp hours of battery,, but if you run 'em down too far real deep cycle batteries are more likely to recover than starting batteries are.. NOT guaranteed to.. just more likely to)
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Home is where I park it!
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02-04-2010, 09:49 AM
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#14
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Senior Member
Join Date: Mar 2009
Posts: 950
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Max,
We just attended a seminar on this subject. For house batteries (flooded) the 12v models just don't have the plate thickness necessary to make them good for a deep-cycle application. As stated above, stick with the 6 volt deep cycle batteries.
Bob Stokesbary
2003 Beaver Patriot
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