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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?

Notes:
-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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Sean M. Pittman, USAF,
2001 Chevrolet Camaro Z-28
-336.7Hp @ 5700RPM, 346.5Ft./Lbs @ 4300RPM
-12.818sec @ 113.9MPH

Whisper Lid, K&N Breather/Air Filter, Gutted MAF, Mac Headers, O2 Sim, Bassani Exhaust, NGK TR55-IX Plugs, MSD 8.5mm Wires, Optima Red Top, Eibach Springs, BFGoodrich g-Force T/A KDW Tires, Auto-RX, GC Oil, RP Tranny/Diff, Pioneer DEH-P7700MP, Spider 6.5" 2-Ways, Pioneer 6.5" 4-Ways, Pioneer 6x9 3-Ways, Alphine MRP-F240 40W x 4 @ 4Ohms, Infinity Basslink, Zaino Wax , 5% Tint
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Old 07-12-2005, 12:34 PM   #2
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Default

My gauge does the same. I have the OEM alternator. Just changed out the battery couple of months ago.
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Old 07-12-2005, 12:34 PM
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