Bulging Battery ! - BMW Luxury Touring Community
 
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post #1 of 14 Old May 2nd, 2014, 5:49 pm Thread Starter
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Bulging Battery !

Good evening all......

I just thought I'd post up a little event that me and my beemer encountered the other day.

We had just left home for a tootle down to Birmingham when I decided to stop for fuel before hitting the motorway. Having filled up I put the key into the ignition and pressed the go button............whirrrrrr.......whirrrrrr......c lick click click !!! Everything was lit up as normal so I tried again....click click click followed by my dash lights doing a vanishing trick before my eyes. I dismounted and pushed my always faithfull and trusty steed around the corner the garage when I noticed a strange aroma, as if something was frying ! It was at this point I lifted the seat to check all was OK.....it wasn't :-(

My battery appeared to be sizzling from the negative terminal and at the same time bulging as if to explode( I maybe over exaggerating that last word but it's what it looked like ) well at that point I grabbed the bike and pushed it like mad away from the garage and quickly and with a sweat on(Jack Bauer eat your heart out ;-) ) disconnected the battery.

Now, as you could all imagine, I was distraught at the behaviour of my reliable steed and having stood there for at least 10 mins in a busy supermarket car park looking like Emo Phillips with a caffeine overdose I plucked up the courage and reserve to lift the seat and check to see the damage. Well the battery is deceased and totally Fubar'd. It has a bulge almost as wide as the battery holder.....I consider my extremely lucky.

My question for you guys is simple.......what the bloody hell happened ???

Answers on a postcard below please...

PmC
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post #2 of 14 Old May 2nd, 2014, 7:27 pm
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Re: Bulging Battery !

Had this happen on an older car I had some year ago. Battery was being over charged due to faulty regulator.


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post #3 of 14 Old May 2nd, 2014, 7:37 pm
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Re: Bulging Battery !

Hard to say but at least disconnect the negative terminal. I have never heard of the regulator going bad on an LT (there is always a first time).

You did not mention a year model so I will say that if it a pre-2002 there is a good chance you have welded the starter relay contacts and when you install the replacement battery be ready for the starer to run. May be able to free it up by hitting the starter button while it is running as this wiggles the welded bits and may break them free.

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post #4 of 14 Old May 2nd, 2014, 7:42 pm
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Re: Bulging Battery !

The bulged case is normally from over-charging. This can be from a defective alternator or from a non-regulated charger being left attached. A 10 amp charger produces roughly the same heat as a 100 watt 110 volt incadescent bulb. Soooo........ get a new battery, install it, and check it for voltage at idle. You should see about 13.2 give or take. Bring the RPMs up and it should top out at around 13.8. Anything consistently over 14 is cause for repair.


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post #5 of 14 Old May 2nd, 2014, 7:49 pm
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Re: Bulging Battery !

Could have been caused by tootling............

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post #6 of 14 Old May 2nd, 2014, 9:55 pm
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Re: Bulging Battery !

Can we have the battery type and history. How old.
What year bike.
Just curious.

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post #7 of 14 Old May 3rd, 2014, 2:59 am Thread Starter
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Re: Bulging Battery !

Morning all....and thanks for your replies

Its a '99 LT with 40k on the clock. The gel battery is 2 years old however it had almost run down on power as I had it in storage for 2-3 months and unable to hook up an optimate charger. Once I got it back home I hooked up the optimate for 24 hours and it fired up perfectly and all was ok till the meltdown.

Tootling is good....

PmC
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post #8 of 14 Old May 3rd, 2014, 4:03 am
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Re: Bulging Battery !

I would read John's mail carefully. +1 for possible welded starter relay.

Born to be wild so why not

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post #9 of 14 Old May 3rd, 2014, 7:23 am
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Re: Bulging Battery !

Quote:
Originally Posted by rattler50 View Post
Could have been caused by tootling............
I thought that was the cause of hairy palms...

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post #10 of 14 Old May 4th, 2014, 7:56 am
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Re: Bulging Battery !

I had a WESTCO fail (no sizzling that I know of) and after I removed it I saw that it was slightly swollen. Last year I saw a WESTCO on a bench at the Blue Ridge Motorcycle Campground that was swollen a bunch.

Ron
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post #11 of 14 Old May 7th, 2014, 1:52 am Thread Starter
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Re: Bulging Battery !

Quote:
Originally Posted by beets View Post
I had a WESTCO fail (no sizzling that I know of) and after I removed it I saw that it was slightly swollen. Last year I saw a WESTCO on a bench at the Blue Ridge Motorcycle Campground that was swollen a bunch.
Morning all..... I neglected to take a picture of my battery bulge, will try to get one up on here for you all to see !!

I have managed to free the starter relay by connecting the new battery and pressing the starter button at the same time time and so far no problems. I'm waiting on a bosch parts company to open this morning to order a new starter relay.....should be a lot cheaper than BMW
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post #12 of 14 Old May 7th, 2014, 4:11 am Thread Starter
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Re: Bulging Battery !

http://www.euromotoelectrics.com/mob...ct.aspx?id=412

Ordered from Andrew Page in UK for $60
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post #13 of 14 Old May 7th, 2014, 6:49 am
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Re: Bulging Battery !

Congrats. Now you can tootle again

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post #14 of 14 Old May 7th, 2014, 3:07 pm Thread Starter
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Re: Bulging Battery !

Quote:
Originally Posted by TeddyTelco View Post
Congrats. Now you can tootle again
Cheers Teddy.....

There's nowt wrong in tootling @ 4500 rpm
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