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Message: <blockquote data-quote="All_Logix" data-source="post: 7151204" data-attributes="member: 628274"><p>I'm no expert on extra batteries but I am in my last year of Electrical Engineering, what you have to consider is that the way the battery under your hood and the alt is configured, the alt sends a current in the opposite direction through your battery to recharge it and the battery acts a filtering cap making sure the AC current from the alt does not pass through into the DC circuit for your car. By placing an extra battery in line with the amps you are adding more voltage to the mix (voltage in series sums the net voltage), and since the current is a constant from the alt will produce more power (watts=volts*current)...in short it makes it easier for your amp to reach a certain voltage at the output without consuming as much current. Like i said I am no expert but if I have to guess this would be my thoughts on it</p></blockquote><p></p>

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