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Old 08-18-2014, 10:27 PM   #1
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Larger battery box

Has anyone replaced the standard tongue mounted battery box with a larger one suitable for golf card batteries (why doesn't Airstream make a slightly larger box?)
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Old 08-18-2014, 11:20 PM   #2
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As others have reported doing, we had a dealer modify the battery box height to accommodate golf cart batteries by removing the lid, adding C-channel, replacing the lid and repainting with factory paint. Looks original. Good question why Airstream does not offer this setup as an option, especially as part of a solar package.
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Old 08-19-2014, 08:43 PM   #3
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I recently had my battery box modified by the guy who installed my solar system. He cut the bottom off and spot welded in a lower bottom. The advantage of doing it this way is it doesn't add to the height of the box which will interfere with my front storage lid (I have a 25 foot FB with twin beds.

The battery box still looks original and the cost was about $200.




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Old 08-19-2014, 09:40 PM   #4
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Quote:
Originally Posted by rp709 View Post
Has anyone replaced the standard tongue mounted battery box with a larger one suitable for golf card batteries (why doesn't Airstream make a slightly larger box?)
Maybe because our Airstream Owners Manuals state that 10% of the trailer weight should be on the tongue, but never more than 1,000 pounds.
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Old 08-20-2014, 07:30 PM   #5
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Battery box

I think Airstream is worried about added weight on the tongue and keeping the battery box smaller is their way of regulating that. I'm wondering if the original box can be removed and how expensive fabricating a new larger one would be. I do like the idea of lowering the bottom.
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Old 08-20-2014, 10:57 PM   #6
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Lowering the bottom is an elegant solution. I'm very happy with it, and the look is entirely original. I estimate that changing out to two 6v golf cart batteries probably added 30 pounds. Just not enough to fret about.


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Old 08-20-2014, 11:13 PM   #7
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golf cart

I have been using 2 Trojan 105 golf cart batteries for several years. This was a good addition. I added some hardwood spacers to raise the lid. I don't care for the look. Do you have pictures of the box modification?
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Old 08-20-2014, 11:15 PM   #8
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I'll post what I can tomorrow.


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Old 08-21-2014, 03:17 PM   #9
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Attached photos show 6V golf cart batteries in original battery box, maintaining top profile. Lowering the bottom can probably be done in a number of ways. In this case, two L brackets were welded to bottom with plate between.

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Old 08-23-2014, 08:17 AM   #10
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Nice. Thanks for that idea. I just went to all GC batteries in our sailboat and will be buying two for the AS in the next few weeks.
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Old 07-29-2015, 03:32 PM   #11
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can't find a solution yet but working on it golf cart batteries instead of house batt

I'm going through this identical problem of trying to upgrade house batteries to golf cart batteries with a newly-acquired 2012 flying cloud 27. The Trojan T-105 RE batteries that the manufacturer says would be perfect for boondocking are a bit less than 2 inches too tall. A local welder says he can't do anything with a welded battery box, although I am going to email him pictures of the L-bracket solution in this thread.

I wonder if anyone has done an end run around this problem by locating robust golf cart batteries with a lower profile that fit in the existing box, without modification, or whether everyone who chose to upgrade their batteries to golf cart batteries has found someone to recraft their battery boxes.

Thanks!
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Old 07-29-2015, 04:15 PM   #12
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See post #18 on this thread for how I gained the height necessary for the Golf Cart type batteries.

http://www.airforums.com/forums/f449...-124829-2.html
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Old 07-29-2015, 06:29 PM   #13
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is there an alternative to expanding the battery box?

Thank you for your response!

I see that you added height to the top of your battery box:

"I mitered the corners and put small L brackets inside the channel for stiffness, then attached it to the top of the battery box with sheet metal screws (or pop rivets) then attached the original top of the box to the new frame."

If I add height on my flying cloud 27 battery box - AT ALL! - it will block access to the storage locker that sits next to the battery compartment. I hope you can see that in the enclosed picture.

I'm wondering if I put two of the largest batteries that can fit in the box as is that will dramatically increase my boondocking capabilities to a similar extent as using the Trojans. For example, a local battery store is recommending a pair of Group 31 Deep Cycle batteries, arguing they will give me "a considerable upgrade." They fit. I have to get the specs to compare. Has anyone gone that route? Do you have an opinion on the two choices? Thanks!!!!
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Old 07-29-2015, 08:19 PM   #14
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Group 31's fit?
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