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<blockquote data-quote="tjjohnson91" data-source="post: 6929711" data-attributes="member: 614582"><p>i have a 110ah battery alone sits at 12.55 and a walmart cheapo that sits at 12.7</p><p></p><p>My alt is a DC 250amp</p><p></p><p>okay........... well with one battery no amp car running it is 14.2 or so</p><p></p><p>when second battery is hooked up its reads 14.1</p><p></p><p>NOW added the amp ( DD z1) when just turning on it drops to 13.9</p><p></p><p>i turn the radio up it drops to 12.5 or 13...... but here is the messed part, it stays at that voltage in the back if not drops more...</p><p></p><p>but... the front battery still reads 14.2</p><p></p><p>ground?</p></blockquote><p></p>
[QUOTE="tjjohnson91, post: 6929711, member: 614582"] i have a 110ah battery alone sits at 12.55 and a walmart cheapo that sits at 12.7 My alt is a DC 250amp okay........... well with one battery no amp car running it is 14.2 or so when second battery is hooked up its reads 14.1 NOW added the amp ( DD z1) when just turning on it drops to 13.9 i turn the radio up it drops to 12.5 or 13...... but here is the messed part, it stays at that voltage in the back if not drops more... but... the front battery still reads 14.2 ground? [/QUOTE]
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