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Old 06-22-2018, 05:20 PM   #1
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2006 25' Safari FB SE
Mooresville , North Carolina
Join Date: Nov 2017
Posts: 10
Upgraded Group 24 to Group 31 AGM's

Many thanks to all posters of content. Hoping to return some karma....

Getting ready to do some extended boondocking and decided to upgrade my Group 24 batteries to Group 31 AGM's. (going from 144 to 210 Amp/Hrs )In preparation for this I also upgraded my converter to a multi-stage Progressive Dynamics (so as not to cook the new batteries ;-)

This project was inspired by a youtube video by "Embracing Detours".... See link.



Having the advantage of doing this at home with all my tools and "Amazon Parts" the major change to what he did was the elimination of a bolted on angle at the hinge side of the box. I chose instead to create a double-articulated hinge, ordering an aluminum hinge off of ebay, modifying it per the picture, and then riveting it to the location of the cut-off "lip" on the box. I then riveted the old hinge/lid to that. Folds completely out of the way to take out and/or replace batteries. BTW, Group 31's added to standard box fit with 3/16" to spare, front to back dimension.

Photos from upper left going clockwise are... 1) before Group 24's 2) Battery box with lip cut off 3) modified Aluminum piano hinge 4) view of "double articulating" hinge 5) upgraded converter 6) new 31's in box. Tiny box in upper left of photo is a remote bluetooth battery monitor which seems to work just fine. Also moved and changed electric jack fuse to a car style fuse.

All rust seen in in photos was removed and repainting done.

Hope this helps someone.
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Old 06-23-2018, 03:30 PM   #2
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 7,870
Hi

Probably a better approach on the hold down bar:

Grab a grinder or Dremel tool and cut back the bar where it approaches the vicinity of the + post. That's really the only point that a short will create smoke. The gotcha with rubber is that if the batteries shift, they may eat right through the insulation. Lots of pressure and not much rubber ....

Bob
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Old 06-28-2018, 08:06 PM   #3
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2006 25' Safari FB SE
Mooresville , North Carolina
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Bob, Thanks for the advice on improving hold down.
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