hey i have a 93 shortbed pickup. i just put a 760watt pioneer amp and 600 watt 10" sub in, i listen to music with alot of bass in it. recently ive noticed that my battery dies alot. it is fairly new and i had it as well as the altenator tested at autozone. they both passed their tests. im wondering if a capacitor would help me out in this situation. if i turn the stereo up alot and let the car idle it hovers around 14.3 volts and slow drops, 14.29, and back to 14.3 back and forth slowly losing voltage maybe a tenth volt every 2 minutes. but when i turn on the lights, and wipers , my voltage drops to around 11. basically im wondering if im driving around with just the stereo on loud , and the headlights + wipers, would a cap help me out?
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