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Message: <blockquote data-quote="jmanpc" data-source="post: 4283488" data-attributes="member: 565915">Voltage should be at 12.5 with the car off and between 13.8 and 14.4v with the car on, depending on how 'warmed up' the charging system is (Usually, while it's 'cold', it's at 14.4 and slowly drops to 13.8 once it has 'warmed up')Your voltage should never go below 12.5v, as it is possibly harmful to your audio system components, as well as your car's electronics and computer. Ideally, while your car is on, you want your voltage to stay as close to 13.8v+ as possible with your system on.</blockquote>

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