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04-15-2019, 01:01 PM
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#1
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Montana Fan
Join Date: Mar 2019
Location: Chino Valley
Posts: 226
M.O.C. #23720
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Battery boxes?
For all of you with more than 1 battery, are you using sealed battery boxes? are you sticking with the sort of sealed boxes with the vent tube? My old rig had 4 batteries in the front compartment with unsealed boxes but seems to have more ventilation. IF your using sealed boxes what brand are they and can they hold group 27 batteries? Thanx for any info.
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Steven & Denise
New to us 2014 3150RL
Chino Valley, AZ
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04-15-2019, 01:04 PM
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#2
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Montana Master
Join Date: May 2016
Location: Cuyahoga Falls
Posts: 699
M.O.C. #18572
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Lead acid, or "wet" batteries outgas when being charged. Those gasses are explosive. Stick with a vented box.
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ATC/NAC Jerry A. Burkholder, USN (RET.)
Rule #1. The Chief is always right.
Rule #2. When in doubt, refer to rule #1.
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04-15-2019, 02:57 PM
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#3
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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No co boxes seem to be good, but I switched to agm to get away from wet cells. I use bolted down trays since I don't need ventilation.
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2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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04-15-2019, 04:32 PM
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#4
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,697
M.O.C. #12947
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When I upgraded from group 24 to group 27, I had to replace the two boxes. A local RV dealer had them in stock, but they are available on Amazon as well as many other places. https://www.amazon.com/rv-battery-boxes/s?k=rv+battery+boxes
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04-15-2019, 04:46 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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You can also find them at marine dealers.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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04-15-2019, 08:16 PM
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#6
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Montana Fan
Join Date: Mar 2019
Location: Chino Valley
Posts: 226
M.O.C. #23720
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Thanx everybody!!
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Steven & Denise
New to us 2014 3150RL
Chino Valley, AZ
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04-15-2019, 09:31 PM
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#7
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Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
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Just curious. Are the fumes from a battery heavier than air??
The battery compartment in my rig is vented below yet it has a vented box with the vent hose going up to an outlet at the front of the rig. Seems like you wouldn't need the vent hose if the fumes are heavier than air?
I plan to go AGM as soon as my current batteries wear out but just curious about the above.
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James & Irene Wilson
Bee Branch, AR.
2017 Ram 1 ton diesel duallyCrew Cab/Long Bed
2018 Montana High Country 381TH Garage Full of Toys
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04-15-2019, 10:10 PM
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#8
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,697
M.O.C. #12947
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You have the hose out the front of the compartment and the vent holes out the bottom of the boxes so air can flow in, through the battery box, and then out the other vent hole. If you only had one air source, you wouldn't get any air flow to clear gases from the batteries in the boxes.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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04-21-2019, 09:15 AM
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#9
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Montana Master
Join Date: Oct 2015
Location: westminster md
Posts: 2,318
M.O.C. #17894
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I have been running 2-6 volt and 2-12 volt batteries for over 5 years just sitting in a wooden box I made so they will not move around.
They are out in the open with no venting what so ever. Never been a issue. The front compartments are FAR front sealed and IMHO have more than enough air flowing through to let any gasses escape.
With a sealed box of some kind it would be a PITA to check water levels like I do quite often.
__________________
2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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04-21-2019, 09:46 AM
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#10
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Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
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Ok here goes the chemist again. The fumes from a battery are Hydrogen Sulfide. It is colorless, HEAVIER THAN AIR, flammable and poisonous. Since it is heavier than air, I would think that a vent or better yet open bottom on the battery compartment would be the ideal way to prevent buildup of hazardous fumes?? Which begs to question why are all the boxes in the RV industry vented upward? Is the idea to bring in fresh air to displace the fumes? That only works IF there is an opening below that allows for circulation.....
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James & Irene Wilson
Bee Branch, AR.
2017 Ram 1 ton diesel duallyCrew Cab/Long Bed
2018 Montana High Country 381TH Garage Full of Toys
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04-21-2019, 10:42 AM
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#11
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Montana Fan
Join Date: Mar 2019
Location: Chino Valley
Posts: 226
M.O.C. #23720
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I agree with all of that. Ran 4 12V batts for 13 years in the old rig, and not so much as a speck of rust!!
Thanx for all the input, I installed 2 of them and am going to install a tray above those for 2 more batteries!! Does anybody isolate one of them for genset start????, or for emergency coach 12v if needed???
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Steven & Denise
New to us 2014 3150RL
Chino Valley, AZ
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04-21-2019, 08:03 PM
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#12
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Montana Master
Join Date: Jan 2017
Location: home base IL, OTR anywhere
Posts: 533
M.O.C. #19382
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Just get AGMs.... problem solved.
__________________
2017 RAM 3500 Laramie CCLB Dually CTD Aisin, OEM auto level rear air-ride, B&W hitch
2020 3813MS Legacy Cobalt FBP, MORryde 8K IS & pinbox, PI EMS,DIY mods by in-house "craftsman", RV security system Mk1 Beagle Alerter
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04-21-2019, 09:06 PM
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#13
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Montana Fan
Join Date: Oct 2015
Location: Round Rock
Posts: 475
M.O.C. #17905
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Just received a NoCo box for 2-6v AGMs that are on order....for over 2 wks...seems like a long time to get Trojans from our local RV dealer. I think he failed to order . NoCo is a really nice well built box. Original box for 2 -12v had extra set of post connections on the lid of the box and had trouble keeping tight. Hated that box, took the lid off and reconnected direct. Maybe get new batts this coming week.
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Pete & Joan & "Honey" fur-baby.
2015 Montana 3611RL 2012 F350 6.7 DRW Lariat
Disc Brakes & Sailun 14 ply S637
6-pt Hydraulic leveling
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04-24-2019, 01:34 PM
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#14
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Seasoned Camper
Join Date: Aug 2018
Location: Sun City
Posts: 53
M.O.C. #22428
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I can get 100 amp hour AGM here in Phoenix from the cartel for fifty bucks each if anyone is interested. I have four of them in my Montana with residential refrigerator and have no problem. Jeff
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04-24-2019, 02:03 PM
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#15
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New Member
Join Date: Feb 2019
Location: Jefferson City
Posts: 5
M.O.C. #23549
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I'm interested. Can you provide specs? brand? model number?
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2017 Montana 3820FK, 2019 Ford F350 Diesel SRW, crew cab, long bed, 25k Companion Hitch, 400 watts solar, two 100Ah 12V LiFePO4 (Lithium Iron Phosphate) batteries.
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04-24-2019, 03:27 PM
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#16
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Seasoned Camper
Join Date: Feb 2019
Location: Oroville
Posts: 66
M.O.C. #23396
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I ordered one of these off of eBay 4for 4 6v t105 Trojan batteries.
(GCQ-G) Century Plastics Quad 6V Deep Cycle Battery Box - Auto, Marine and RV.
I had to glue in a event on the top and bottom for air ventilation.
Works great.
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2018 Montana 3701LK, 2018 Dodge 3500 Laramie.
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04-24-2019, 03:31 PM
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#17
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Seasoned Camper
Join Date: Feb 2019
Location: Oroville
Posts: 66
M.O.C. #23396
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(GCQ-G) Century Plastics Quad 6V Deep Cycle Battery Box - Auto, Marine and RV.
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04-24-2019, 03:47 PM
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#18
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Established Member
Join Date: Apr 2010
Location: Kamloops
Posts: 37
M.O.C. #10287
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I made up a box using using a Rubbermaid Roughneck bin. Added a vent to the bottom through the floor and attached the existing vent to the top. The low profile box is perfect for my two HD 6 V golf cart batteries. Has worked great for 10 years now.
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04-25-2019, 07:48 AM
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#19
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Montana Fan
Join Date: Sep 2018
Location: Terry
Posts: 153
M.O.C. #22698
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In viewing a video about AGM batteries it notes you must use an AGM compliant charger. Are the later model RV's charger's AGM compliant? I presume so since a lot of people note they are using AGM batteries.
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04-25-2019, 10:39 AM
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#20
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Seasoned Camper
Join Date: Aug 2018
Location: Sun City
Posts: 53
M.O.C. #22428
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Charge voltage of AGM batteries are slightly highers than flooded cells, but not by much. I use a Victron solar controller for my charging needs.
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