Is a battery a battery, or do I need a Porsche battery?

[Finnegan]

Originally Posted by Qingdao

The vent is for Hydrogen.

Your new battery should have a little orifice that you can attach a hose to that vents the hydrogen out into atmosphere. Its designed for trunk or cab mounted batteries so the gasses from the battery can escape the cabin.

If you don't see a little spot for a tube then you have a vent in the caps on the battery.

I looked for just such a port, and found nothing. Is my frunk going to fill with hydrogen and kill me?

[Qingdao]

Na, I mean old bugs had batteries under the back seat with venting from the caps.

Then again old bug floor pans are notorious for rust in the battery compartment. (well they rust everywhere, but first in the battery tray)



If it were me I'd get a battery with a proper vent tube. Just to eliminate the corrosive element of natural battery "breathing".

[Brian in Tucson]

Originally Posted by Qingdao

Na, I mean old bugs had batteries under the back seat with venting from the caps.

Then again old bug floor pans are notorious for rust in the battery compartment. (well they rust everywhere, but first in the battery tray)



If it were me I'd get a battery with a proper vent tube. Just to eliminate the corrosive element of natural battery "breathing".

Yup on the VW battery falling thru the floor. In Michigan, when I was a kid, all my cars seemed to have rusted out floor pans.

I didn't worry about the vent, when the Bosch battery died, I replaced it with a Walmart AGM, no vent. When I store my car (lately all the time) I disconnect the battery and occasionally slap a charger on it.

[Brian in Tucson]

Originally Posted by Finnegan

I looked for just such a port, and found nothing. Is my frunk going to fill with hydrogen and kill me?

No, and if you're worried about corrosion under the battery, go to a marine supply and get a pint of zinc chromate and coat the battery tray. Back in the day, I had a Fiero with a swiss cheeze battery tray, I replace it of course. What a crappy car!

[tommy583]

I just got an Autozone battery. There are 2 vent holes. One on each side. You cap off the side you're not using with the cut out circle on the red cover. The problem I'm having is the vent hole is totally different than the setup on the Interstate battery I took out. I'll have to get some kind of adapter to make it work.

[Qingdao]

Originally Posted by tommy583

I just got an Autozone battery. There are 2 vent holes. One on each side. You cap off the side you're not using with the cut out circle on the red cover. The problem I'm having is the vent hole is totally different than the setup on the Interstate battery I took out. I'll have to get some kind of adapter to make it work.

A bit of rubber hose will adapt it just right.

It doesn't have any pressure its just were the battery breaths.

Glass mat batteries don't breath, so they don't have vent holes in either the caps (which they don't have) or through a little "spout".