Replace Grp 24 Batt with Grp 27 2007?

[2dabeach]

I have a 2007 25'FB Safari with the standard front frame mounted battery box with 2-Group 24 deep cycle batteries. I'll be replacing the batteries this season and want to know if anyone has replaced the 2-Group 24's with 2-Group 27 batteries without any modification to the battery box? I would go out and measure the box but my trailer is 50 miles away in a storage yard. Thanks

[Nightwatch]

Originally Posted by 2dabeach

I have a 2007 25'FB Safari with the standard front frame mounted battery box with 2-Group 24 deep cycle batteries. I'll be replacing the batteries this season and want to know if anyone has replaced the 2-Group 24's with 2-Group 27 batteries without any modification to the battery box? I would go out and measure the box but my trailer is 50 miles away in a storage yard. Thanks

Fairly sure they wont fit. I checked into this with my 2008 23D, and unless you have a slightly larger box it wont work. Might be easier to go with 6 volts as you just have to raise the height of the box. Width can be limited by the frame width.

[JFScheck]

I just checked and I agree that I don't think that this will work out as you have suggested.

[Al - K4GLU]

According to comments from Lewster you can replace 24's with 27's if you remove the plastic tray in the bottom of the battery box. Tight fit but will work and from measuring my battery box and looking at the 27's dimensions I believe it will work but have not tried it yet.

[vswingfield]

Originally Posted by Al - K4GLU

...the plastic tray in the bottom of the battery box...

There's supposed to be a plastic tray in the bottom of the battery boxes?

I can see the potential for making the batteries easier to get out.

[wayner61]

The plastic tray has to go.

The battery you select may or may not fit without slight trimming.

Many batteries have handles, mounting tabs, etc. that extend beyond the basic battery dimensions.

I saw a post where CrawfordGene put group 27 life-lines into the factory battery box of his 25FB. I can't locate the post but I am pretty sure he had to do a little trimming with an angle grinder on the top flange of the battery box as well as trimming a little of the plastic from the batteries where the carrying handle was attached to make it fit.

I was going to put Interstate Group 27's in but I couldn't figure out a way to make them fit without significant modifications so I abandoned the idea and went with Group 24's. I probably didn't spend enough time looking for a solution that day though. I was in a hurry and rain was heading my way....

[tomp]

Originally Posted by Nightwatch

Fairly sure they wont fit. I checked into this with my 2008 23D, and unless you have a slightly larger box it wont work. Might be easier to go with 6 volts as you just have to raise the height of the box. Width can be limited by the frame width.

NIGHTWATCH has the right idea. You gain amp hours with 6 Volts which is what you want and the "fix" is simple by increasing the height of the box with four pieces of pt wood and reattaching the lid. I ripped some 2" x 2" pcs and screwd them to the top of the box.

Look at this link for dimensions: BCI Battery Group Size Chart

It will give yu battery dimensions for various "Groups" assuming you remember how well you Group 24's fit the box.