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Old 07-06-2014, 10:58 PM   #1
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Battery box question

I have two 6 volt batteries on rear bumper of 17B. The battery box is attached to the bumper frame but there is an added 1/2 piece of plywood between the box and frame and I'm not sure why.

Any ideas? This is a 2009. Is it the same setup for the newer models?
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Old 07-06-2014, 11:02 PM   #2
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On my 2010 17B the batteries were mounted directly forward of the bumper and encased in black plastic with a nylon belt strap to secure the lid. Don't recall any wood platform.
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Old 07-06-2014, 11:38 PM   #3
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The rear bumper is 1.5"x3" box-section steel tubing... which means without some sort of platform, the battery is sitting on a 1.5" wide bar. I doubt the battery case is designed for that, so I would use a steel or plywood platform.

I've seen several Escape battery installations, including some on the 17's rear bumper, but sorry - I don't recall the platform or clamp.

Quote:
Originally Posted by Rossue View Post
On my 2010 17B the batteries were mounted directly on the bumper and encased in black plastic with a nylon belt strap to secure the lid.
What holds each battery down, and what does it attach to?
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Old 07-07-2014, 12:05 AM   #4
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Brian- I modified the post above; they don't sit on top of the metal bumper. They are between it and the trailer. Can't remember exactly how they are mounted, but am pretty sure they're not on plywood.
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Old 07-07-2014, 06:52 AM   #5
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Our 2012 is on plywood.
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Old 07-07-2014, 08:26 AM   #6
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On my 2010 Escape 19, two pieces of plywood were sandwiched to form at least a 1 inch board that had bolts running through from the plastic battery box and then through the frame.

I has some issues with these bolts. It appears the battery box was taking on some water, the bolts were tightened down sufficiently that there were places for water to pool around the bolt. In turn, the bolt rusted and left some rather nasty stains.

I replaced the fasteners with a galvanized version and painted the plywood. The plywood was too weathered for me to determine if it was treated wood.
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Old 07-07-2014, 10:54 AM   #7
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So the sole purpose of the plywood must be to protect the box strap from the road elements.

My plywood is not treated and badly weathered.
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Old 07-07-2014, 05:05 PM   #8
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On mine the plywood is the floor between two pieces of angle iron welded to the bumper bars. The plywood is bolted to the metal angle iron, and the battery box is screwed down to the plywood from the interior of the battery box. The box strap is in a groove in the battery box, between the box and the plywood. I actually prefer a plywood bottom, since that's easier to replace than if the battery frame had a solid metal floor, which would collect water and rust out easily.
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Old 07-07-2014, 08:54 PM   #9
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Thanks for the clarifications, especially santacruzer - that's quite clear. If the angle irons are spaced just right to support the long edges of the battery then I don't think the plywood would be needed, but sometimes what is practical to fabricate is not the simplest design.

The strap over the outside of the plastic battery box holds the box lid on, but what holds the battery? Is the battery just sitting loose in the box?
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Old 07-07-2014, 09:42 PM   #10
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Santacruzer did a much better job of explaining the setup.

And yes the battery sets loose in the box. The angle iron in my case was heavily corroded and the bolts securing the box had to be cut off because of rust. Also there were rust deposits on the ground where I park. Just finished repainting the bumper area and not quite sure how I will re-assemble the box.
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Old 07-07-2014, 10:48 PM   #11
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Quote:
Originally Posted by Brian B-P View Post
Thanks for the clarifications, especially santacruzer - that's quite clear. If the angle irons are spaced just right to support the long edges of the battery then I don't think the plywood would be needed, but sometimes what is practical to fabricate is not the simplest design.
The angle irons actually are on the shorter ends on the battery box. They're perpendicular to the bumper, and the batteries sit lengthwise on the bumper frame. Without the plywood as a floor it would be difficult to attach, as firmly, the plastic battery box.
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Old 07-07-2014, 11:02 PM   #12
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I don't know if this is of any use in the discussion, but it's my group 27 battery box on my 17B bumper.
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File Type: jpg battery box.jpg (143.7 KB, 28 views)
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Old 07-07-2014, 11:14 PM   #13
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I'd be really tempted to replace the wood with something less organic like pieces used on decking - Timber Tech or something along those lines. Don't know if a piece of Dri-Dek flooring would be stout enough, but it might be as the weight is really carried by the angle irons on the ends.
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Old 07-07-2014, 11:32 PM   #14
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Watched a show last night about the eruption of a "super volcano" underneath Yellowstone. It will likely erase life in North America. Apparently it erupts about every 600,000 years. Last time it erupted was 640,000 years ago.

I have no plans to replace the supports for my battery box. I'm not concerned about rusted bolts.
If the battery box falls through the plywood, I probably needed to replace the battery anyway.

It's interesting to observe the difference between this forum and FGRV. Over there, members are trying to assemble awnings out of umbrellas they got at the thrift store and over here we keep trying to fix stuff that isn't broken yet.

If I wasn't so lazy, I'd probably "fix" some stuff too.
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Old 07-07-2014, 11:42 PM   #15
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Many on FGRV own pre-2001 trailers to work on, prior to Escape manufacturing. Oldies prior to factory awnings, too!
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Old 07-08-2014, 12:17 AM   #16
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Quote:
Originally Posted by RonS View Post
And yes the battery sets loose in the box.
That's not at all uncommon. At least with the plywood base it should be easy to add a couple of threaded rods for a hold-down clamp, if desired.
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Old 07-08-2014, 12:24 AM   #17
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With the battery in a box and the box secured by webbing and bolted to the trailer, why does the battery need to be clamped? I've been on some rough roads and unless I'm missing something, it looks just fine to me.
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Old 07-08-2014, 12:54 AM   #18
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We have solutions looking for problems, it's the American way!

I'm with gbaglo on this one, that plywood will likely outlive me, and the battery sure as hell is secure. Let's move on to keeping our ice cold for the cocktails.
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Old 07-08-2014, 01:00 AM   #19
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Quote:
Originally Posted by gbaglo View Post
With the battery in a box and the box secured by webbing and bolted to the trailer, why does the battery need to be clamped?
Because it can bounce around in there which is hard on it, and because in a collision that case is not designed to contain the massive battery. Most cars have the battery in a box these days - ever seen one without a clamp?

Quote:
Originally Posted by gbaglo View Post
I've been on some rough roads and unless I'm missing something, it looks just fine to me.
It's pretty hard to see the internal condition of the plates and connections.

Loose batteries are pretty common, and perhaps most people are happy with the life of their trailer batteries. Plus, in a collision an RV trailer is assumed to be totally destroyed.
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Old 07-08-2014, 01:05 AM   #20
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OK, I follow that. What is the battery clamped to?
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