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Old 03-16-2015, 09:04 PM   #1
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Battery replacement

Any recommendations on what brand of batteries to replace the ones I have in my 2015 31sl. Both my batteries are bad for whatever reason. Getting ready to change them out. I had Walmart deep cycle batteries in my last unit and they did an adequate job.
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Old 03-16-2015, 09:20 PM   #2
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That's what I use, highly rated by Consumers Report. Of course, Interstates are also good.
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Old 03-16-2015, 10:24 PM   #3
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on a 2015 ? I'd go back to the dealer and redwood - that's horrible they put bad batteries on a new rv!
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Old 03-16-2015, 10:49 PM   #4
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They put some crappy generic batteries in from the factory. They also put crappy tires on from the factory, but that's another thread.
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Old 03-17-2015, 01:15 AM   #5
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My 31SL only came with 1 generic battery from the dealer. I don't do any dry camping so I installed 1 Interstate battery. I had one Interstate in my previous 5ver and it was great.
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Old 03-17-2015, 03:49 AM   #6
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I had the same problem with mine. One battery shorted out so I replaced both with interstates. Both original battery's had no name brand no #s nothing to tell where they came from. The dealership or redwood reimbursed me about 2/3rd of the cost for the new ones. We were in the trailer for 2 mths

I
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Old 03-17-2015, 06:04 PM   #7
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Replaced my batteries with two golf cart 6 V batteries from Costco. $160 for the pair and they are made by Interstate. Lots of capacity.
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Old 03-17-2015, 07:10 PM   #8
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Now you're talking... That's what I'm doing as soon as I can chop a path through the ice to get to the battery box... UGH!
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Old 03-17-2015, 08:37 PM   #9
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That's a good price for the golf cart batteries. We don't have a Costco around here close, though. That would be the best way to go.
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Old 03-17-2015, 10:22 PM   #10
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We're using two maintenance free Interstate Batteries that were installed the day we picked it up three years ago. Still going strong.
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Old 03-18-2015, 03:53 AM   #11
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By the specs, I'm installing a new battery box and (2) Trojan T-145 6V. That should make a big difference dry camping before I have to hit the Onan button.
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Old 04-22-2015, 04:23 AM   #12
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My batteries have given out and I only used the 2015 rv for two months last fall.
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Old 04-22-2015, 07:51 AM   #13
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I have 2 Interstate batteries that have performed well over the past 3 years. Make sure you do not draw down your batteries to low while in use and keep them charged during storage with a solar panel. If you try to adhere to draw downs of no more than 50% on deep cycle and 40% on standard batteries, you should get good life out of them. Also do not mix brands.
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Old 04-23-2015, 12:56 AM   #14
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The Dealer replaced ours after 3weeks!
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Old 04-23-2015, 12:58 PM   #15
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If you are in the DFW, Tx area, I have 3 good interstates that are going back with my redwood
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Old 04-24-2015, 05:42 PM   #16
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The dealer replaced our originals with Interstates during the pre-delivery inspection. We were told the originals froze during a bad winter at the manufacturing plant.
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Old 07-10-2015, 03:18 AM   #17
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Converter issues w/6v batteries

I have to replace my bstteries and am thinking of changing to two 6V batteries in series. It looks like several folks have done that. Are there any issues with the converter for charging when on shore power or the genset? Are there any other gotchas folks have run into?
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Old 07-10-2015, 04:37 AM   #18
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Great choice!

The only complication is you'll have to get a different battery box and vent it. The 6 volts set taller than the standard 12V so the factory battery boxes won't work. Ken and Donna came up with a nice replacement box.
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Old 07-10-2015, 04:58 AM   #19
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I had them convert to 2-6 volts when I purchased, no issues ... They changed the battery box and this it.
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Old 07-10-2015, 02:49 PM   #20
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Quote:
Originally Posted by 5th_Time View Post
By the specs, I'm installing a new battery box and (2) Trojan T-145 6V. That should make a big difference dry camping before I have to hit the Onan button.
I'm sure you'll be smarter than me. First time dry camping I neglected to realize that the genny is wired into the same 12V system which feeds other on board systems. Bottom line, you're Genset won't start with a weak battery bank. Duhh.
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