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07-25-2012, 07:24 AM
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#1
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Junior Member
Join Date: Mar 2011
Location: Parker,CO
Posts: 14
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Feedback: Single group 4D 12v battery
I read on another forum that someone thinks it's a better option and has much more reserve power than with a regular 12 v battery; 2 - 12 v batteries hooked in parrallel; or 2 6v deep cycle batteries hooked up in series.
Anyone give me feedback on this "single group 4D 12 v battery? It seems that they can be pretty expensive and quite heavy. My cougar has an outside mount on the front, so I think this would be ok..
My interstate battery that came with the camper is crap and won't hold a charge dry camping for 1 day, with the ac on intermittently and the water pump and fridge.
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07-25-2012, 08:15 AM
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#2
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Senior Member
Join Date: Sep 2011
Location: Northville NY in the Adirondacks
Posts: 2,128
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Quote:
Originally Posted by break80
My interstate battery that came with the camper is crap and won't hold a charge dry camping for 1 day, with the ac on intermittently and the water pump and fridge.
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I'm very curious to know how you are running your air conditioning off a 12vdc battery.
__________________
'11 Cougar 326MKS loaded with mods
'12 Ford F250 SuperCab 6.7 PowerStroke Diesel
Amateur Radio: KD2IAT (146.520) GMRS: WQPG808 (462.675 TPL 141.3)
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07-25-2012, 08:50 AM
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#3
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Site Team
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,015
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Your fridge - if on propane - will draw only a small amount from your 12v battery and your A/C cannot run off it. If your single, 12v battery is in good condition, you should get a bit more than 1 day if you are being careful on your usage of lights, pump, etc.
But you are right about the 4D's being heavy, expensive and large.
If you do a fair amount of dry camping, my choice would be 2 6v Trojans but others use 2 -12's and have had success with those.
There probably wouldn't be much difference in the weight or price of a single 4D compared to two 12's or 6's. You'd have to take a look at the amp hours of the various combinations and brands when considering what would make the best option for you.
__________________
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
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07-25-2012, 09:53 AM
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#4
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Junior Member
Join Date: Mar 2011
Location: Parker,CO
Posts: 14
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Quote:
Originally Posted by Festus2
Your fridge - if on propane - will draw only a small amount from your 12v battery and your A/C cannot run off it. If your single, 12v battery is in good condition, you should get a bit more than 1 day if you are being careful on your usuage of lights, pump, etc.
But you are right about the 4D's being heavy, expensive and large.
If you do a fair amount of dry camping, my choice would be 2 6v Trojans but others use 2 -12's and have had success with those.
There probably wouldn't be much difference in the weight or price of a single 4D compared to two 12's or 6's. You'd have to take a look at the amp hours of the various combinations and brands when considering what would make the best option for you.
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My bad, the ac reference was incorrect. I was not running the ac on this trip. what kind of pricing would the 2 6v Trojans run, and where may be a good place to purchase. I saw some of th 4d 12v ranging from $300 and up adn over 120 lbs...
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07-25-2012, 10:11 AM
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#5
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Senior Member
Join Date: Jan 2012
Location: Central San Joaguin Valley, CA
Posts: 2,117
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Have to agree with Festus2 regarding the 6v batteries and I am told that the Trojans are the best. However, unable to spend the price of Trojans, I went with 2 - 6v golf cart batteries from Costco - right at $80.00 each. We can get 5 days dry camping with power to spare. FWIW
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Jack & Marty
2018 Laredo 298 SRL
2011 F-250 SB Crew Cab 4x4 6.7L
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07-25-2012, 10:24 AM
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#6
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Senior Member
Join Date: Aug 2011
Location: WESTERN,CT
Posts: 2,095
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I have seen thetrojans on fle-bay 100+price range. be careful when buying interstae 12v deep cyles there are two types one is srm the other pro. thesrm is adaul purpose the pro is a true deep cycle the pro's about 20 bucks more. that is right out of the interstae dealer sheet.
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BARNEY AND CHRISTINE
2010 MONTANA 3750FL
2005 DODGE 3500 DUALLY TD
2 RESCUE PUPS: SUSITNA AND CRYSTAL. RIP ALYESKA!
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07-25-2012, 02:33 PM
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#7
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Senior Member
Join Date: Nov 2010
Location: Herndon, VA
Posts: 394
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Battery
Saab,
How do you tell the difference?
Thanks,
John
__________________
2006 Dodge Cummins 3500 Mega cab, dually
2011Cougar 318SAB
Sidewinder hitch
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07-25-2012, 02:41 PM
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#8
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Junior Member
Join Date: Jul 2012
Location: Franklin
Posts: 11
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YOu are going to want to buy the Trojans locally, not sure on how they will ship a wet/flooded battery. I have two on the front of 2004 trailer that are just now getting close to needing replacement - but I treat them right. I would say $145-$150 each is in the range. Charge them fully before use, recharge them after every use and get a float/trickle charger for extended periods of non-use.
Another option is Brand X golf cart batteries at Sams/BJs/Costco. Figure $80 each at the big box store and if treated right you should get 5 - 6 years.
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07-25-2012, 10:30 PM
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#9
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Junior Member
Join Date: Mar 2012
Location: Covina, Ca.
Posts: 24
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TWO 6v VS TWO 12V
This brings up a question I also have. When I bought my Cougar 5ver (used) it had an older 12V. I asked the setup guy when I picked it up What I should replace it with. He told me 2 6V in series. More AMP HRS. The first time out that same weekend the 12V died by morning. I drove 35 miles to Walmart but they didn't have any 6v's so I ended up buying 2 12v's set up in parallel. Now I decided to research this on the internet, and what I find is that 2 6 volt batteries set in series the amp hrs do not add so if you put 2 6V in series with 105 amp hrs each. Your total amp hours is 105. But if you put 2 12v batteries in parallel with 105 amp hrs each. Your total amp hours is 210.
So why is it better to use 2 6v's in series?
__________________
2011 Toyota Tundra Crewmax 5.7L
2006 Cougar 278EFS
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07-26-2012, 02:20 AM
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#10
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Permanent User Ban
Join Date: Mar 2012
Location: Bartlesville, Oklahoma
Posts: 1,124
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Quote:
Originally Posted by BOBYT1630
This brings up a question I also have. When I bought my Cougar 5ver (used) it had an older 12V. I asked the setup guy when I picked it up What I should replace it with. He told me 2 6V in series. More AMP HRS. The first time out that same weekend the 12V died by morning. I drove 35 miles to Walmart but they didn't have any 6v's so I ended up buying 2 12v's set up in parallel. Now I decided to research this on the internet, and what I find is that 2 6 volt batteries set in series the amp hrs do not add so if you put 2 6V in series with 105 amp hrs each. Your total amp hours is 105. But if you put 2 12v batteries in parallel with 105 amp hrs each. Your total amp hours is 210.
So why is it better to use 2 6v's in series?
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As I understand it (battery dunce here)... When you run them in parallel, you don't get exactly double. It's not a linear "addition".
Also... your 105 amp hours for the 6v seems low to me???
Anyway.. a good read right here -> http://www.marxrv.com/12volt/12volt.htm
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07-26-2012, 04:53 AM
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#11
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Senior Member
Join Date: Aug 2011
Location: WESTERN,CT
Posts: 2,095
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johyfry look at the part number it will start with srm or pro then the group# ie srm-24 pro-24m both are 500 cca battery's but pro is the true deep cycle.
__________________
BARNEY AND CHRISTINE
2010 MONTANA 3750FL
2005 DODGE 3500 DUALLY TD
2 RESCUE PUPS: SUSITNA AND CRYSTAL. RIP ALYESKA!
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