Under Seat Battery Kit????

[Javier]

is nothing but a tiny clear plastic hose plugging into the battery venting port and going trough the floor groomet just besides the battery.

Javier

[Torque]

so wheres the air box then???

It's on the driver's side.

[Kalevera]

The battery's under the hood until 3/91 production date cars in all US spec 525s. Bill has a TIS doc on it. I was a bit shocked when I first saw an M50 525 with the battery under there and had a post to that effect a few months ago...not so exciting now that I've seen a few of them

The other thing is -- you really need the vent kit. I pulled a battery on a '95 740 a few weeks ago; the vent had been disconnected (factory/original battery) and I had to neutralize the entire area because battery acid and corrosion were everywhere. Car would've looked funky without a pass rear quarter panel, right?

best, whit

[Traian]

Wow, ! When I pulled my old battery, the vent tube was disconnected; also the battery was a tad small and had inadequate CCA. Still a heavy sucker though!

[Qsilver7]

No no no i have it under the seat, i meant to say the underseat battery VENT kit that someone mentioned before



J.McWatters

the vent kit comes with whatever battery you purchase. The design of batteries are different so there isn't a "universal" vent kit. The batteries I've seen that are mfg'd by Johnson Controls (Duralast 49 DL, Interstate MTP-93, DieHard, etc) have the battery vent hole in the center of the battery...and their kit comes attached to the side of the battery and looks like this:



The BMW battery (and Douglas 95R) has the vent hole on the side and connects to the car's hose with a small elbow fitting...it looks like this:


If you have another brand battery...and their is a vent hole in it...you can puchase plastic hosing at your local hardware store and vent your battery that way. Sometimes a previous owner has disconnected the cars vent hose and you may need to buy enough hosing to go from the battery out through the grommet in the battery compartment.