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08-31-2022, 12:05 PM
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#1
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Seasoned Camper
Join Date: Jan 2019
Location: Holyoke
Posts: 96
M.O.C. #23350
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12 V Deep Cycle AGM Battery
Looking for the above battery to fit in area 12Lx6 1/2wx9h. Anyone have any ideas where we might find such a battery? Not having much luck locating one so far. It is for our 2019 Montana High Country.
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Randy/Debbie
2019 MHC 330RL
2019 Ford F250, 4.30 axle ratio,
Ext cab, 6.2L, gas
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08-31-2022, 12:23 PM
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#2
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Montana Master
Join Date: Jan 2018
Location: Granger TX
Posts: 2,593
M.O.C. #21044
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I use two Duracell Group 27 AGM batteries from Sam's in my rig.
Group 27 dimensions: 12.0625 x 6.8125 x 8.875 inches (306 x 173 x 225 mm)...close to what you need.
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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08-31-2022, 01:19 PM
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#3
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Seasoned Camper
Join Date: Jan 2019
Location: Holyoke
Posts: 96
M.O.C. #23350
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Thanks Mike & Debbie,
Unfortunately, we do not belong to Sam's club. But will search for that particular battery. Appreciate your feedback.
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Randy/Debbie
2019 MHC 330RL
2019 Ford F250, 4.30 axle ratio,
Ext cab, 6.2L, gas
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08-31-2022, 02:20 PM
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#4
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,669
M.O.C. #9969
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Randy, are you looking for that size to fit into an existing battery box??
I don't know exactly how large your front storage is, but we have an OEM Onan 5500 Generator and still have room to fit 4 Trojan T105 6 Volt AGM Golf Cart Batteries. I don't have them in Battery Boxes, but do have a cover over top with the outside vent attached.
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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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09-01-2022, 03:14 AM
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#5
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,236
M.O.C. #25165
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If you don't have Sam's, try WalMart or maybe a Batteries Plus. Both should sell the same battery. Also, a Group 24 would be just a bit smaller than the Group 27 listed above, if the dimensions are slightly too large for your box.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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09-02-2022, 12:27 AM
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#6
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,774
M.O.C. #12947
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Don’t let the existing battery box dictate the size batteries you install. It’s not that hard to install a new box for larger batteries. Most RV dealers will have or can order a new box to replace one that is too small. I upgraded to larger batteries from what our dealer had installed originally and just changed out the box.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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09-02-2022, 06:25 AM
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#7
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Montana Fan
Join Date: Nov 2010
Location: Chatsworth
Posts: 471
M.O.C. #10933
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These are AGM which release no gas so what do you need a box for? I had 4 AGM,s for 6 years in our Monty and put them in a shallow tray with pieces of wood surrounding them so they couldn,t slide around. They didn,t move. I now have 3 lithium Ampertime batts.
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Gayle and John Devall
2017 Legacy 3720 IS and Disc brakes
1120 watts solar panels and 300 AH lithium batteries
2011 Ford f350 srw long box Lariat with B&W Patriot hitch. Residential Fridge.
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09-02-2022, 06:29 AM
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#8
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,236
M.O.C. #25165
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Although not the extent that flooded lead acid batteries do, AGM batteries CAN still off gas during charging. They are still recommended to be vented when installed in an enclosed environment.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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09-02-2022, 09:41 AM
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#9
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Montana Master
Join Date: May 2006
Location:
Posts: 1,732
M.O.C. #5751
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I've got two deep cycle 12v Interstate AGMs, cheaper from a dealer than a regular retail auto store.
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09-02-2022, 04:49 PM
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#10
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Montana Fan
Join Date: Nov 2010
Location: Chatsworth
Posts: 471
M.O.C. #10933
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Check out the prices of many lithium brands on Amazon. They re almost the same price as AGM. They,re lighter, can be charged faster, and have more useful capacity.
__________________
Gayle and John Devall
2017 Legacy 3720 IS and Disc brakes
1120 watts solar panels and 300 AH lithium batteries
2011 Ford f350 srw long box Lariat with B&W Patriot hitch. Residential Fridge.
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09-02-2022, 05:46 PM
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#11
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Montana Master
Join Date: May 2006
Location:
Posts: 1,732
M.O.C. #5751
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Quote:
Originally Posted by artfuldodger
Check out the prices of many lithium brands on Amazon. They re almost the same price as AGM. They,re lighter, can be charged faster, and have more useful capacity.
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...and take a different or different settings on your present charger.
I just checked Lithium prices...if they are less than about at least three times the AGM price...and if they are really ''on sale'' they are hard to find.
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09-03-2022, 05:43 AM
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#12
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Montana Fan
Join Date: Nov 2010
Location: Chatsworth
Posts: 471
M.O.C. #10933
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When I bought agms 6 yrs ago they were about 300$ a piece and I needed 4 x6 volts. Cost 1200$. Last spring I bought Amperetime lithium's for 400$a piece but only needed 3 for approximately the same usable amp/hrs. Cost 1200$. Yes the converter settings are different but easily changed on newer units. Older units would require an updated converter and yes that would be a game changer for me too. I charge almost exclusively with solar.
__________________
Gayle and John Devall
2017 Legacy 3720 IS and Disc brakes
1120 watts solar panels and 300 AH lithium batteries
2011 Ford f350 srw long box Lariat with B&W Patriot hitch. Residential Fridge.
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09-04-2022, 08:07 PM
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#13
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Seasoned Camper
Join Date: Aug 2016
Location: Tustin Calif
Posts: 76
M.O.C. #18958
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Checkout lifeline
Amazing batteries
As said agm don't degass so enclosed boxes are less a concern other then securing them..
I installed the taller 6volt batteries
Have been absolutely amazed at how long they last under load and overall about 8 years.. of heavy use
Cheers
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