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10-01-2012, 02:43 PM
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#1
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Montana Fan
Join Date: Sep 2009
Location: Claypool
Posts: 279
M.O.C. #9711
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replacing batteries
My batteries (2 12 volt) are just a little over two years old. They test as good, but I can't run my furnace all night without having them almost completely depleted by morning. Even though they test good, they will not charge up to their full capacity. I am considering replacing them with a couple of Optimia Blue Top, but they are big bucks, about $210.00 each and I have never used any of these before. Has anyone replaced their 12 volt batteries with an Optimia and if so did it last any longer that any other deep cycle battery?
Thanks
Don
__________________
SOB Curt 25 K 5th wheel hitch
2012 Ram 3500 DRW Laramie Long Horn
RDS 60 gallon fuel tank, air lift air bags
Wheel to wheel SS side bars
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10-01-2012, 02:54 PM
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#2
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,658
M.O.C. #9969
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Dan, do you know the size and ratings for your present batteries?? I'm running a pair of Group 29s from Sam's Club and seem to be holding up fine, but then again we haven't been in a situation requiring the furnace to run all night.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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10-01-2012, 03:14 PM
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#3
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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Just for comparison, I have a single 12V Interstate battery that came with the fiver ... runs furnace fan all night with a bit of juice left the next day in 40 degree weather furnace set at 70. I do turn off the antenna booster and unplug the 12 volt Jensen TV.
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10-01-2012, 03:59 PM
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#4
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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I added an Optima blue top as a second battery to our rig. The original wet deep cell is separated by an isolation switch. I can say that the Optima has about three times the life of the wet deep cell. As always, this is not to be taken a a recommendation, rather just providing experience. What you need for long life is a combination of batteries that give you the most amp-hours.
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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10-01-2012, 08:01 PM
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#5
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Montana Master
Join Date: Feb 2005
Location: Sioux Falls
Posts: 729
M.O.C. #3206
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Have you considered using 2 6 volt batteries? We had 4 6 volt batteries in our Monty and never had a problem during overnite use- JMHO- Don
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10-02-2012, 02:36 AM
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#6
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Montana Fan
Join Date: Oct 2006
Location: East Moriches
Posts: 418
M.O.C. #6436
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X2 on the 6 volt batteries. Trojan T105 batteries are used in golf carts and make an excellent choice for RV's. had them and they really last. 2 in series have 220 amp hrs. You can really run them down and they still charge righ up. Just a suggestion. John
Foot Note, 2 - 6 volt batteries in series will give you the same capacity as 2 - 12 volt batteries in parallel. The advantage is if 1 of the 12 volt batteries has a problem it will drain the other. It doesn't do that with the 6 volt batteries.
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10-02-2012, 03:30 AM
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#7
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Montana Fan
Join Date: Sep 2009
Location: Claypool
Posts: 279
M.O.C. #9711
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Thanks for feed back. I started thinking about it and when these batteries were brand new they functioned the same way! I did have booster off but did not unplug the TV. I started the generator when we got to the site to open the slides so the batteries didn't take a big hit, but still no joy. I looked up Interstate warranty and these only have a couple of months left so that is no big deal. I have thought about some six volts batteries, but haven't decided on that yet. Again thanks for input.
Don
__________________
SOB Curt 25 K 5th wheel hitch
2012 Ram 3500 DRW Laramie Long Horn
RDS 60 gallon fuel tank, air lift air bags
Wheel to wheel SS side bars
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10-03-2012, 05:41 PM
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#8
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Montana Master
Join Date: Aug 2009
Location: Grand Rapids
Posts: 1,896
M.O.C. #9561
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this may sound silly but with your 2 12volt batteries do you have it that on the first battery the positive goes to the trailer and on the second battery that negative goes to the trailer?
http://www.gearseds.com/files/twobat_onechgr2.pdf and this one: http://www.batteriesnorthwest.com/ba...cfm?TID=6#ANC6
connecting batteries this way you double the amps. i had to teach the tech at the dealer i brought my trailer from.
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10-04-2012, 01:48 PM
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#9
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,548
M.O.C. #2283
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Interstate sell a battery that is made for portable electric sings. I think it is 1350 CCAs. Is designed to run these sings for days without being recharged. It is big and very heavy but it is a great battery. I gave about $175 for one.
Lynwood
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