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03-21-2019, 04:54 PM
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#1
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Member
Join Date: Feb 2019
Posts: 61
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Any suggestions on 12V batteries
I have 2-12v batteries on my tt and looking to replace soon, any suggestions on what 12v batteries you would suggest?
Thanks Brian
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2020 Silverado 3500HD 4X4
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03-21-2019, 04:59 PM
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#2
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Senior Member
Join Date: Sep 2012
Location: Palm Coast Florida
Posts: 12,995
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I would just recommend a large group size like 29/31 as they have more reserve capacity and will allow more recharge cycles.
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03-21-2019, 05:55 PM
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#3
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Senior Member
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 4,602
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If you're asking this question, you might need to read this for some great general info.
The 12volt Side of Life (Part 1)
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03-21-2019, 06:27 PM
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#4
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Senior Member
Join Date: Nov 2006
Location: Western NY
Posts: 6,150
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For house use 2 - 6V GC2s in series. True deep cycle, lowest $/AH and good durability.
Sam's Club $85 Ea.
Bests 12V RV / Marine batts hands down.
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Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD
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03-23-2019, 04:18 PM
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#5
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Senior Member
Join Date: Jul 2011
Posts: 141
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We do alot of boondocking. So, we went with two 6v golf cart "Interstate" brand batteries from Costco for $99 each. They work great. I'll never go back to 12v batteries again.
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03-31-2019, 08:04 AM
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#6
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Junior Member
Join Date: Feb 2018
Location: Adirondack Mtns.
Posts: 26
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Not an expert, but most people that do true boondocking seem to lean towards 2 - 6V GC (Golf Cart) batteries. Seems to make sense the way golf carts are misused and abused.
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04-01-2019, 09:31 AM
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#7
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Senior Member
Join Date: Apr 2018
Posts: 167
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I am doing the same, going to two 6v deep cycle batteries. If you have two 12v already, you might be able to wedge in 4 6v batts. Just depends on your needs.
I am slowly, very slowly, building my own lithium ion pack, that I plan to eventually install on the TT. Lithium is great, but very expensive new.
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2006 23' RVision Trail Cruiser Lite
2013 F150 SCREW 3.5 EB 4x4 XTR 3.55's 1402lb Payload
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04-01-2019, 09:40 AM
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#8
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Member
Join Date: Nov 2018
Location: Simi Valley, CA
Posts: 66
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After researching options, I just replaced the original four 12v flooded batteries with four 6v Trojan T105 AGMs, true deep cycle and maintenance free. I didn't want to deal with checking and adding water every month to flooded batteries. 
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04-01-2019, 09:46 AM
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#9
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Senior Member
Join Date: Feb 2011
Location: Oregon
Posts: 252
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I pickup my 12 volt type 24 batteries at Costco - think they run about $60.
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Hope this helps.
Kevin
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04-03-2019, 10:17 AM
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#10
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Registered User
Join Date: Jun 2016
Posts: 839
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Quote:
Originally Posted by bryan2101
I have 2-12v batteries on my tt and looking to replace soon, any suggestions on what 12v batteries you would suggest?
Thanks Brian
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Deka Group 31 AGM batteries. No maintenance required.
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04-03-2019, 11:16 AM
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#11
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Senior Member
Join Date: Nov 2006
Location: Western NY
Posts: 6,150
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Read this before replacing house battys with any GP batty rated w CCA or MCA even if they claim to be deep cycle marine RV
Also Reserve capacity is not a good deep cycle measure... look for and compare AH at 20A Rate and compare $/AH for a valid comparison.
https://marinehowto.com/what-is-a-deep-cycle-battery/
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Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD
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04-04-2019, 12:38 PM
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#12
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Senior Member
Join Date: May 2018
Posts: 111
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My first batteries were 12v "deep cycle" and lasted not quite 2 years. After that, I switched to two 6v GC batteries. My first set went 8 years. I acquired a 9 year old set of Trojan T105s, which lasted another two years. That means they were 11 years old when I replaced them with a new set of T105s, which are about 2 years old now.
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