I have a maintence free battery in my Chevelle. When I took it out today, I noticed it was leaking acid out of the vent hole. Its probably 3 or 4 years old, but it holds a good charge. Any idea why it would be leaking?
If it is a sealed battery there was too much gas pressure built up inside and the safety vent opened. It could be a defective valve, in which case the battery might be returned for warrenty.
It could also be over charged. What is your charging voltage at cruise (say 2500 rpm)?
I put a higher amp alt. in the car for my stereo. It had a 55amp, the one put in the car is putting out about 80amps. I didn't think there would be a problem considering the fact that the alt. has an internal reg. I know this might sound like a dumb question.... You think this could cause the batt. to over charge?
Brian if the voltage regulator is working properly the alt will only put out the amps required. So no a larger alt should not do that unless the voltage reg is hosed and allowing the alt to over charge. Voltage should be around 14 to 15 volts at the horn relay, car running of course. This assumes it's still a 3 wire setup and the sensing is still at the main splice, very close to horn relay.
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