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Voltage drop is terrible after adding more batteries. :/
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<blockquote data-quote="boxpunch" data-source="post: 8270384" data-attributes="member: 655113"><p>Huh? Only 2 types of batteries (gel and agm). The deka's (if 8a31 or 9a31) are an agm battery that's built for high current draw in bursts, that would be good for car audio.</p><p></p><p>Back to the OP, when is the last time you charged your batteries (have you charged them since noticing voltage drop?)</p><p></p><p>Your connections are secure and clean?</p><p></p><p>Your amps are grounded to the rear batteries and rear batteries grounded to the frame of the car?(or a solid bolt on the body, if it's a unibody vehicle)</p><p></p><p>You've got what size (and brand) wire running to the rear?</p><p></p><p>Your voltmeter is pulling voltage from the amp or the front of the car?</p></blockquote><p></p>
[QUOTE="boxpunch, post: 8270384, member: 655113"] Huh? Only 2 types of batteries (gel and agm). The deka's (if 8a31 or 9a31) are an agm battery that's built for high current draw in bursts, that would be good for car audio. Back to the OP, when is the last time you charged your batteries (have you charged them since noticing voltage drop?) Your connections are secure and clean? Your amps are grounded to the rear batteries and rear batteries grounded to the frame of the car?(or a solid bolt on the body, if it's a unibody vehicle) You've got what size (and brand) wire running to the rear? Your voltmeter is pulling voltage from the amp or the front of the car? [/QUOTE]
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Voltage drop is terrible after adding more batteries. :/
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