Replacement Battery - United Bimmer Community

**coladuck007** · 12-15-2007, 03:46 PM

I need to replace the battery on my 2003 Z4. Walmart has a battery that they say will work. However, I noticed the original battery has a tube coming out of the side(not sure what it's for)but the replacement battery does not.
Does anyone know what the tube is for and if the replacement battery sans tube is sufficient.

**Dudesky** · 12-16-2007, 05:25 AM

The tube is there to vent the vapors out of the car. You need it, trust me it's the wrong battery.

**coladuck007** · 12-16-2007, 10:45 AM

Thanks Dudesky, you are right. I took my car to Walmart yesterday and they ended up telling me they didn't have the right battery after all. Any idea where i can get a replacement or is the dealer my best choice?

**Antiburn** · 12-16-2007, 01:09 PM

Theres very few aftermarket batteries that supply a vent hole, they are all usually sealed
Ive seen a few cars come in with aftermarket batteris and the vent hose isnt connected. Yes dealer batteries cost a bit more but they are OEM replacement with a 2 yr parts warranty. If price is the factor a aftermarket battery will work w/o the vent hose but if the battery damaged your trunk area BMW will not cover it.

**Numark318i** · 12-16-2007, 02:58 PM

im suprised walmart even has a battery they say might work.

330 has a cold crank number so high the people at all my local shops said they dont think they ever made batteries with that much juice.

buy an OEM battery. They have a two year warranty i believe. Heh ok just read anyit burns post. but yea what he said. ^^

nick_318is · 12-16-2007, 07:52 PM

^+1 the OEM batteries are great and I think worth spending the extra cash on, otherwise get something with a lot of cold cranking amps.

**mzbmw325i** · 12-16-2007, 10:17 PM

i got my E30 battery from auto zone, it has the vent tube, then again i live in Arizona.

**coladuck007** · 12-19-2007, 07:59 PM

Thanks, Everyone I was able to find a replacement vented battery at AutoZone. Their computer search showed 2 different vented batteries for my year, make and model. The Duralast 94R-DLG and the Duralast H6-DLG. The first battery did not fit in the battery well, but the H6-DLG was a perfect match.

Thanks Again!

**jackmlnsn** · 04-03-2009, 11:02 PM

My Z needed a battery as well. Walmart book doesn't have a listing for Z's, so I measured the size of my battery, (I believe it was 7" x 7" x 11") and matched one up in the 48 series that had a vent. Cost around 65 bucks.