Thread: Aux Battery Cabling

That's not a vented battery, it's just the positive battery cable and a tin cover.
You are right that the photo shows the pos or neg cable now I look closer.
But doesn't answer whether it is vented or not.
Geez I am not going to die in a ditch about Beetles , but I can sure tell that every BMW E36 with battery in boot was vented.
Regards Philip A

Originally Posted by d2dave

Made my decision today. Went and got 6 metres of 6 B&S and ran it over the top of the chassis rail. It is in situ but yet to be tied.

Hallaluya, praise the lord. Now we just need to convince the other 2 that vented or not vented can be sorted between them in PM's and us mods can get on with other more important stuff.


Well done Dave, hope it works. There would only be about 1000 D2's running around with a 2nd battery in the rear.


Cheers Ean

Unfortunately another good thread worthy of discussion has turned into a slanging match for no good reason.

Gentlemen, and you both know who you are, this slanging match is to end here. I have deleted a number of inflammatory posts by both of you.
If both of you want to continue this debate and name calling privately by all means do so, but not here!

Let's bloody hope so

Originally Posted by bee utey

Also Minis from the 60s had regular non vented batteries inside the boot.

Thanks bee utey, I forgot about them.

New Jeeps have the battery under the seat, a number New Mercs have the battery next to the cab and if their baatery did vent it would be into the cab, just like the VE Commodores, because the boot and cab are the same area.

Now for all those contemplating putting a battery in the back of your landies, in the rare event that the battery is caused to vent GAS, providing it is maounted in a plastic battery box, NOTHING WILL HAPPEN other than in extreme cases, you will smell one of the worst stenches you could imagine, which will inevitably cause you to pull over.

THAT’S IT.

Contrary to was posted about how dangerous it is, it is not dangerous.

The only way you can cause a battery to vent while driving, is if you drop a cell AND that cell shorts internally.

No alternatory operates a a voltage that is high enough to cause a battery to vent gas.

The battery can in an extreme case, blow it’s top, just like the event Dave posted about ( only for a different reason ), and this is why ALL batteries should be mounted in a plastic battery box.

It should be a “PLASTIC” battery box for a number of reasons. The first is because it is plastic, it is unaffected by the electrolyte.

Secondly, Plastic battery boxes are specifically shaped so that should gassing occur, the gas will rapidly disperse throughout the cab.

By allowing the gas to disperse rapidly, the ratio of hydrogen to atmosphere can not reach a critical level inside the battery box, thus removing the chances of an explosion occurring at the battery.

NOTE, this does not remove the chance of an internal explosion occurring inside the battery, and this is the third reason for mounting a battery in a plastic battery box.

If a battery explodes, even if it’s not in a battery box, it will not vaporise the rear end of your vehicle, leaving you hanging on to your steering wheel, as it, your motor and your front wheels continue down the road.

The battery will just fracture in most cases, some time a corner blows out, and occasionally, the whole top blows away. Again, this is why you mount the battery in a plastic battery box.

The force of an internal explosion can easily be contained by a standard plastic battery box.

So Mike, no matter what type of battery you are planning to fit in the rear cargo area, mount it in a plastic battery box and you are safe.

Serious question tim, does it have to be plastic? I have an agm in the amarok in a wooden box (draw system), a yellow top in no box at all in the rear of the rangie.

Sorry Vern, not allowed to answer that.

See above.

Thanks for not being able to answer that tim