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Message: <blockquote data-quote="2023 LTZ" data-source="post: 8832741" data-attributes="member: 686684">Thank you These amps are tolerant to 16vIt seems weird that w headlights, fan on medium and volume off it has occasionally stayed at 15v. I have a couple batteries but am hesitant to buy a decent isolator to find it didn’t change. Maybe the audio system is irrelevant to charging or doesn’t play a role in this. The oe alternator did the same thing. Maybe I’ve created in my mind this is a problem. The battery or cel have never come on.I appreciate the insight enthusiasts.</blockquote>

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