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Old 06-29-2020, 09:59 AM   #1
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6 Volt Vented Boxes

Hi All,


I am looking to swap out my dual 12 volt batteries for 6 volt batteries. The factory boxes are for group 24 batteries so they are about an inch too short. The problem is since they are in the front compartment they have to be vented and I cannot find anywhere to buy vented battery boxes that will accommodate a 6 volt battery. Does anyone know where I can find such a thing? The original battery boxes weren't totally sealed anyways as the wires made a gap all the way around the lid. Maybe the gap isn't a big deal since the hydrogen will rise up into the lid anyways?
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Old 06-29-2020, 10:14 AM   #2
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My factory battery was vented and I hooked the existing vent up to my new battery box. If you look in the blog in my signature you can scroll to the bottom and find "Off the Grid" where I did the battery upgrade and inverter setup on my 5th wheel. You really need a vent in the bottom and a vent in the top of the battery box to allow air to flow though and pull out the gases. And you absolutely want it vented from the compartment as it doesn't just remove the gasses it helps to prevent corrosion. If it isn't now it needs to be.
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Old 06-29-2020, 10:53 AM   #3
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I like that box, did you do anything about the wire pass through U shaped bits or just leave them? I think short term since the current boxes have vents in the bottom and top and the gap is quite a ways below the top of the batteries I will just install them back in with longer screws and leave the gap, since hydrogen rises any discharged gas should still just rise up and out of the vent. Long term I will probably get that same box as you because I would like to switch from 2 6V to 4 6V batteries. Might also go AGM since they don't vent under normal operation so if your venting isn't perfect it probably won't be as big a deal and you don't have screw with the water level. I need to figure out if my converter will correctly charge AGM batteries though.
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Old 06-29-2020, 11:34 AM   #4
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I bought a box online capable of holding 4-6V golf cart batteries. I modified it by cutting the vent out of the existing vented box and glued it into a hole I drilled into the top of the new box. Itís been working as expected every since. I also used duct tape to cover the unused cutouts in the new box so as much hydrogen gas as possible would escape thru the vent.
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Old 06-29-2020, 11:48 PM   #5
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Pick which one you want.
https://www.amazon.com/s?k=6+volt+ba...b_sb_ss_i_1_17
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Old 06-30-2020, 09:13 AM   #6
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Quote:
Originally Posted by chboone View Post

Unfortunately it isn't that straight forward. I specifically was wondering about a 6 volt box that has the connections for a vent lines from enclosed spaces. Amazingly it seems no one that manufactures battery boxes has determined there is a need. I ended up going with this box and slicing and dicing the old box up and adding the vents to this one. https://www.statetrailer.com/product...23&detail=true
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Old 07-02-2020, 06:49 PM   #7
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Quote:
Originally Posted by Kdawg89 View Post
Unfortunately it isn't that straight forward. I specifically was wondering about a 6 volt box that has the connections for a vent lines from enclosed spaces. Amazingly it seems no one that manufactures battery boxes has determined there is a need. I ended up going with this box and slicing and dicing the old box up and adding the vents to this one. https://www.statetrailer.com/product...23&detail=true
I think that's the best way. I did use pool noodles to seal the u shaped cutout's in mine.
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Old 07-03-2020, 07:54 AM   #8
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i've been looking at this issue also. we have two vented group 27 battery boxes in the front compartment of our 5th wheel. the venting is very important as there are all kinds of electronic devices also in the same compartment. the floor of the compartment has been cut to the size of the battery box and the lower half of the box actually fits through the the floor so the bottom of the box extends down through the floor.

i was looking at upgrading to a couple of gc2 batteries. they will fit in the existing boxes but they are taller so the box won't totally enclose them. i couldn't find any type of box on the internet that would work.

i have an idea of have a metal fabrication shop build a couple of deeper bottom battery boxes. i could put them into the holes that the existing box bottoms fit into and they would allow the gc2 batteries to sit lower. then i could use the existing vented box tops to cover and enclose the batteries. right now this is simply a concept.

or do i just go with agm batteries with their limited off gassing. my biggest fear is off gassing and corrosion getting into the compartment and affecting all the electronic devices in the compartment. i do not want that to happen!
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Old 07-04-2020, 07:54 AM   #9
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batt box

I swapped out 1 12V for 2 6V.

Used boat battery boxes.




Made custom vent cover.





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