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Old 12-01-2013, 08:28 AM   #1
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Sunseeker battery box, ventilated?

I was at the dealer looking at some things on the Sunseekers prior to the delivery of ours. Is the battery box (under the step) ventilated? I didn't open it, but I crawled underneath and didn't see any ventilation.
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Old 12-01-2013, 09:21 AM   #2
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My unit has sealed batteries (Vent regulated lead acid -VRLA) from the factory. One of the battery hold down straps came loose and I had to pull the batteries to get strap cleated back in the bottom of the battery box. I didn't see any openings in the storage box. In fact I noticed Forest River took great effort to seal any holes. I assume this is to keep water/moisture and bugs out. It's not completely air tight but I don't think you should use flooded lead acid batteries in these storage boxes.

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Old 12-01-2013, 09:47 AM   #3
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My 2300 has an opening on the backside of the battery box. I use it to attach the battery tender to keep the batteries charged. And, yes, I did find a mud daubers nest inside last time I opened the box to check the battery fluid level
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Old 12-01-2013, 04:25 PM   #4
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My 3120 battery box is ventilated on the rear side where the positive cable goes thru. I also ran my battery tender lead thru the hole. Unless you have Optima style batteries I think they all should be in vented compartments.
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Old 12-01-2013, 05:14 PM   #5
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My 3120 battery box is ventilated on the rear side where the positive cable goes thru. I also ran my battery tender lead thru the hole. Unless you have Optima style batteries I think they all should be in vented compartments.
My coach is a 2014 and had entry ports for the battery cables but Forest River filled/sealed the openings with the urethane foam. I don't consider these "vents" although if battery gases did build-up it could vent through these ports if they aren't sealed too tight.

Optima is a brand name but is synonymous to dry cell or absorbed glass mat battery and would be am excellent application as a deep cycle battery.

Both vrla and glass mat batteries are suitable for enclosed battery wells.

Also I need to point out my wording error in my previous post; I stated "vent regulated lead acid", it was supposed to be "valve regulated lead acid".

I did a post months ago on on my battery well fix: Battery Box Fixes
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Old 12-01-2013, 06:25 PM   #6
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bgilly,

What exact battery did yours come with? I don't know of any VRLA that are not AGM's. Maybe gel cells I suppose. I'm pretty sure if they have liquid electrolyte, even if they are called maintenance free, they should not be in an unvented box.
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Old 12-01-2013, 06:36 PM   #7
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My 2014 2450s has a hole in the back of the box.
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Old 12-01-2013, 06:56 PM   #8
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bgilly,

What exact battery did yours come with? I don't know of any VRLA that are not AGM's. Maybe gel cells I suppose. I'm pretty sure if they have liquid electrolyte, even if they are called maintenance free, they should not be in an unvented box.
I don't recall the name exactly - Exide I think: http://cdn.forestriverforums.com/for...1&d=1374187129

VRLA is still a lead acid battery (the LA in VRLA) but the venting is "regulated". These are not sealed batteries but don't behave the same way as Flooded Lead Acid batteries. Some manufacturers refer to the line of VRLA as absorbed glass mat.

This may help detail the differences: Comparing Flooded Batteries to VRLA Batteries

Bobby
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Old 12-02-2013, 11:12 AM   #9
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Bobby,

The Trojan article says what I was saying: A VRLA is either AGM or gel. Not liquid electrolyte. I'll be tickled pink if FR is providing those. But I'm betting they are providing some sort of "maintenance free" liquid electrolyte battery. Which should be in a vented box, IMO.
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Old 12-02-2013, 11:44 AM   #10
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Bobby,

The Trojan article says what I was saying: A VRLA is either AGM or gel. Not liquid electrolyte. I'll be tickled pink if FR is providing those. But I'm betting they are providing some sort of "maintenance free" liquid electrolyte battery. Which should be in a vented box, IMO.
Ok, I agree on the technicality - FR isn't providing gel or AGM unless you buy them as an ordered unit.
The ones in my coach are maintenance free (not AGM or gel or sealed). As in the article - the gasses need to vent when under pressure. It doesn't vent in the same way as FLA batteries so battery box vent is not as crucial.
As for whether the battery that FR provides ("maintenance free") needs venting - they took great measures to seal the battery box in my unit including a bulb seal under the step access. Mine isn't drum tight but it's not open air vented.

Bobby
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