Battery Voltage Gauge Fluctuating... - LS1TECH - Camaro and Firebird Forum Discussion

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Battery Voltage Gauge Fluctuating...

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Old 07-12-2005, 10:25 AM   #1
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Default Battery Voltage Gauge Fluctuating...

Ever since buying this car I have noticed that the Battery Voltage Gauge likes to move around a lot. Is this normal? This is what I have noticed:
-Prior to turning the key to start, the voltage gauges reads just a hair over the red area (10V if I had to guess)
-Upon starting and for the first 30M of driving, the gauge reads somewhere around 15V
-After about 30M of driving, the gauge goes to about 13.2V and remains there until I turn her off
*Is the gauge indicating that the alternator is charging the battery for 30M everytime I turn the car on? If so, why would it still try to charge my new Optima Red Top Battery that I bought yesterday? Is this how the stock factory alternator voltage regulator works?

-I don't have an aftermarket alarm, amp, stereo, lighting accessories, or any other device to my knowledge that would draw a current when the car is off and cause the battery to be drained.
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Old 07-12-2005, 12:34 PM   #2
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My gauge does the same. I have the OEM alternator. Just changed out the battery couple of months ago.
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