Need battery boxes

[laknox]

My new KZ has a single Gp27 12v battery in a vented box. Box has a top vent =and= a bottom vent. (I've never seen a battery box with a bottom vent.) I want to replace with 2 GC2 6v batteries, so will need to replace the existing box since it's not tall enough, and add a 2nd box. I can't use a dual box due to interference with stuff inside the compartment, so will need 2 separate boxes. Questions:

1) Do I really need bottom-vented boxes?
2) Any issues with teeing the vent line to join the boxes into a single vent?

My pass-through and front storage are all one big compartment, so I really need sealed and vented boxes since I'm going to stay with wet-cells, for now.

Lyle

[bdoyle]

I have a century plastics battery box for four 6V batteries. They have many sizes. Just Google Century Plastics battery boxes. You will have to cut your vant holes and drains. I also added a foam rubber seal around the lid and taped around the cables to seal the box up. I used ratchet straps to hold the lid down against the seals. Or you could just duct tape the whole thing up (like I did for ten years). They are very basic as they come but you don't have to build the whole thing.

[Wankel7]

Check out Century Plastics. They have all sorts of different sizes boxes for different amounts of 6 volts. I love mine.

[brulaz]

laknox wrote:

brulaz wrote:
Wondering why the bottom vent.

H2 is a gas that is lighter than air so will rise. And it comes out of the top of the battery and should rise thru the vent piping and out of the trailer.

Our earlier trailer came with a single battery inside, vented at the top only. Air coming in under the lid could provide a draft up the vent, if that's what is wanted.

Guess I would be more concerned that the vent piping has a steady slope and no sags where the gas can pool.

Lyle:

Main reason is so I don't have to remove the d@mn batteries if I need to hose them down. :B Never seen one before, but the OEM box for the Gp24 Interstate has one and I thought it was pretty clever. Also, I have as yet to find a GC2 box with a =top= vent, so I'm pretty much convinced I'm going to have to DIY it with a hole saw. Just strange that =someone= doesn't make one. Oh, well...

Lyle

Ah yes, a drain rather than vent.

I've drilled holes in the bottom of all of my externally mounted battery boxes, just in case rain water gets in.

[MEXICOWANDERER]

Quick cable USED to have vented boxes --- my apologies.

You do not need nor do you want more than one hole per
box.

https://www.campingworld.com/battery-box-vent

Use one of these on a QC box.

Hydrogen gas is almost violent in it's rage to rise straight up.

They have bilge purge fans on boats to expel petroleum vapors -- another horse's color entirely.

[laknox]

brulaz wrote:
Wondering why the bottom vent.

H2 is a gas that is lighter than air so will rise. And it comes out of the top of the battery and should rise thru the vent piping and out of the trailer.

Our earlier trailer came with a single battery inside, vented at the top only. Air coming in under the lid could provide a draft up the vent, if that's what is wanted.

Guess I would be more concerned that the vent piping has a steady slope and no sags where the gas can pool.

Lyle:

Main reason is so I don't have to remove the d@mn batteries if I need to hose them down. :B Never seen one before, but the OEM box for the Gp24 Interstate has one and I thought it was pretty clever. Also, I have as yet to find a GC2 box with a =top= vent, so I'm pretty much convinced I'm going to have to DIY it with a hole saw. Just strange that =someone= doesn't make one. Oh, well...

Lyle

[brulaz]

Wondering why the bottom vent.

H2 is a gas that is lighter than air so will rise. And it comes out of the top of the battery and should rise thru the vent piping and out of the trailer.

Our earlier trailer came with a single battery inside, vented at the top only. Air coming in under the lid could provide a draft up the vent, if that's what is wanted.

Guess I would be more concerned that the vent piping has a steady slope and no sags where the gas can pool.

[laknox]

MEXICOWANDERER wrote:
Something wrong with these?


http://www.quickcable.com/products.php?pageId=190

Nothing, but where are the vents? Looking for =vented= boxes, like I currently have with my single GP24 battery...

Lyle

[MEXICOWANDERER]

Something wrong with these?


http://www.quickcable.com/products.php?pageId=190

[Learjet]

I cut the vent connections out of the old box leaving making a flange with them. Then, cut holes in new box with Dremel, glued in flange with bolts on the top flange for extra support.

[racer4]

Deleted.

I didn't see you are looking for bottom vents.

[laknox]

nayther wrote:

laknox wrote:
Why the hell can't I find battery boxes for a pair of GC2 batteries with built-in top and bottom =vents=?! F'n =stupid=! :M:M:M

Lyle

any luck? I'm looking too

No luck, yet. 😞 Going to have to make my own, I guess.

Lyle

[nayther]

laknox wrote:
Why the hell can't I find battery boxes for a pair of GC2 batteries with built-in top and bottom =vents=?! F'n =stupid=! :M:M:M

Lyle

any luck? I'm looking too

[laknox]

Why the hell can't I find battery boxes for a pair of GC2 batteries with built-in top and bottom =vents=?! F'n =stupid=! :M:M:M

Lyle

[SoundGuy]

laknox wrote:
My pass-through and front storage are all one big compartment, so I really need sealed and vented boxes since I'm going to stay with wet-cells, for now.

JMO but since properly designed vented boxes are much more costly than conventional battery boxes intended to be mounted on a trailer tongue I'd put the extra $$ into AGM batteries that don't need additional venting and be done with it ... just what I did recently, mounting my G31 AGM in the trailer's front pass through cargo compartment.