battery swelling

battery swelling - 10/15/10 12:50 AM

What causes the case of a battery to bulge.
It is pushed out. Is the Alt overcharging?

Posted By: Pacnorthcuda

Re: battery swelling - 10/15/10 12:54 AM

Either excessive heat or a deeply sulphated battery--so sulphated that the deposits have litterally pressed hard against the case.

Posted By: moparmikethree

Re: battery swelling - 10/15/10 01:00 AM

This is on a customers car. It had 2 new batterys in 2 months

Posted By: a4runer

Re: battery swelling - 10/15/10 01:05 AM

It's over charging alot. Regulator stuck open and alternator running full tilt. Should also be able to smell the battery cooking after a long drive.Stick a volt meter across it and bring the rpm's up some and the volt meter will probally get up over 16/17 volts no problem.....needs only 13.8 or so while driving.

Posted By: safetymike1977

Re: battery swelling - 10/15/10 02:13 AM

Watch out... Probably close to the point where it could explode...

Posted By: In_The_Pink

Re: battery swelling - 10/15/10 07:45 AM

Quote:

Watch out... Probably close to the point where it could explode...

Roger that. Something's overcharging the battery- most likely the voltage regulator has failed.

What make/model/year vehicle?

Posted By: CYACOP

Re: battery swelling - 10/15/10 04:49 PM

Hold down bracket on top too tight? What car is it?

Posted By: wvmarv

Re: battery swelling - 10/15/10 05:20 PM

Quote:

Hold down bracket on top too tight? What car is it?

Posted By: wvmarv

Re: battery swelling - 10/15/10 05:28 PM

Quote:

It's over charging alot. Regulator stuck open and alternator running full tilt. Should also be able to smell the battery cooking after a long drive.Stick a volt meter across it and bring the rpm's up some and the volt meter will probally get up over 16/17 volts no problem.....needs only 13.8 or so while driving.

Exactly. 13.8 volts is max the regulator should let the alternator charge. Probably cooked that battery too. New regulator definitely, and probably a new battery now.