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04-03-2017, 08:35 AM
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#1
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3 Rivet Member
2015 25' FB Flying Cloud
Minnetrista
, MN
Join Date: Jun 2015
Posts: 105
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Will group 27 battery fit?
I have a 2015 Flying Cloud 25FB and currently have group 24 flooded batteries. Has anyone found a good AGM group 27 battery that will fit in the battery box?
Thanks
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04-03-2017, 09:38 AM
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#2
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Home of Vortex tuning
2013 27' FB Eddie Bauer
Spearfish
, South Dakota
Join Date: Dec 2009
Posts: 614
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Word is that 27's fit if you rotate placement, from inline to crossways. May be specific as to which spot fills first and the center rod may need to be removed and reinstalled in the process.
I haven't replaced my batteries yet, so I don't know for sure, but the word is, , ,
__________________
"Chip Tank" is in Westwood Ca.
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04-08-2017, 07:44 PM
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#3
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On adventure with H&G
1955 22' Flying Cloud
1958 26' Overlander
1966 28' Ambassador
Lansing
, Kansas
Join Date: Aug 2012
Posts: 373
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I tried today and came up about 3/8" too short after taking off the lid completely. If you could trim the lip on the front of the steel box that that lid is riveted on to, it would make it.
Hope this helps. I didn't try it sideways, but that seems unlikely.
Regards,
Matt
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04-08-2017, 07:59 PM
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#4
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Rivet Master
1987 25' Sovereign
Fort Collins
, Colorado
Join Date: Jan 2010
Posts: 582
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Look at dimensions of Trojan 27AGM. Fits our battery boxes with room to spare compared to previous flooded Group 24s.
__________________
Alumacoot
“We are confronted with insurmountable opportunities.”
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04-08-2017, 08:47 PM
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#5
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4 Rivet Member
2022 27' Globetrotter
Asheville
, North Carolina
Join Date: Jan 2017
Posts: 396
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I went the route of two Lifeline 6V AGM's and they fit my 2016 25FB battery box perfectly.
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04-08-2017, 08:50 PM
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#6
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Site Team
2017 30' International
Broomfield
, Colorado
Join Date: Apr 2009
Posts: 3,555
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Will group 27 battery fit?
I have 2 group 27 lifelines in my battery box....
It's a 2008 25'....
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04-08-2017, 10:02 PM
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#7
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Rivet Master
2012 25' Flying Cloud
Battle Lake
, Minnesota
Join Date: Jun 2009
Posts: 7,714
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You can go even larger. I put two 12 volt Lifeline AGM GPL 31XT batteries in our FC 25. I removed the lid, trimmed away the forward lip with a sawsall, dropped the batteries in, and riveted the lid back on at the sides. You will need much larger cables for the parallel connection between the two batteries than the stock cables, to ensure there is absolutely no resistance between the batteries. The center battery hold down rod will be tight between them.
__________________
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts
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04-09-2017, 05:36 AM
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#8
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4 Rivet Member
2022 27' Globetrotter
Asheville
, North Carolina
Join Date: Jan 2017
Posts: 396
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@Wulfraat - Nice install. did you torque the bolts or hand tighten?
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04-09-2017, 06:58 AM
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#9
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4 Rivet Member
2022 27' Globetrotter
Asheville
, North Carolina
Join Date: Jan 2017
Posts: 396
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Did some homework on these group 27's and added them to my spreadsheet. Wish I had thought of this a week ago as these seem to have an extra hour of runtime over the 6V.
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04-09-2017, 08:18 AM
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#10
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Rivet Master
2012 25' Flying Cloud
Battle Lake
, Minnesota
Join Date: Jun 2009
Posts: 7,714
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wulfraat, would it be better to have the two parallel leads of the same size (large), and short as possible? I believe the idea is to parallel the batteries so they act as one large battery, with as little electrical resistance between them as possible.
It looks like you have the same space issue we have with our two Group 31XT, the batteries fit too close together for the hold-down rod to fit easily.
__________________
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts
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04-09-2017, 09:53 AM
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#11
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Site Team
2017 30' International
Broomfield
, Colorado
Join Date: Apr 2009
Posts: 3,555
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Will group 27 battery fit?
My batteries are connected in parallel with 2 leads of the same size (2ga I believe).
I agree that cables in theory should be as large and as short as possible.
I may try and put some larger / shorter parallel cables in there this year (maybe 0/1 or 0/2) but I don't draw heavy amps from those batteries even with my inverter (I don't run the microwave for instance, just the TV, phone chargers, laptop,etc).
For light loads I don't think it matters much.
Bolts are tightened down good using a wrench (not hand tightened)
I removed the tie-down rod as there wasn't room for it.
Once these puppies are done I am going to make the move to lithium, 300-400 amp hours, and move my battery bank indoors. I boondock a lot and get tired of constantly monitoring and worrying if I am drawing down towards the 50% mark of my AGM bank.... (I have a victron 702 monitor in my system)
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02-21-2022, 08:47 PM
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#12
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1 Rivet Member
2013 16' Sport
Washington
, Washington, D.C.
Join Date: Dec 2012
Posts: 14
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I just put 2 Duracell group 27s in my 2019 FC 25 FB twin. I removed the center pin and eased in the first battery to the Port side. After trying to get the second battery in without success, I trimmed 1/2 inch for 6 1/2 inches off the box lip. Played with the cables and was now able to lower the battery into place. The lid lock still has plenty of lip to seclude nicely.
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03-01-2022, 07:27 PM
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#13
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Journeyman
2016 25' International
Amherst
, Massachusetts
Join Date: Apr 2016
Posts: 956
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I have two Interstate 27s in mine. They don't fit past the lip, so just bend that back when installing. They are nice and snug in the box and will require that you remove the threaded rod tie down.
(Note the pipe insulation I use on wire ends to prevent them from causing problems while disconnected.)
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