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Message: <blockquote data-quote="dboy727" data-source="post: 8304885" data-attributes="member: 662658"><p>what to look at is simple you only get out what you can put in volts(x)available amps=potential watts cars run at 14.4v normally some 16 or 18v a stock alt pushes out 110amps minus 50-65 amps for cars on board electrical system giving you about 50 amps left, =720 watts potential output, in your case your getting a 320 amp alt minus say 65 amps if you have ac gives you 255 amps times 14.4 gives you 3672 watts of potential output batteries have amp hours think of them as a bank account but if you withdraw more than your alts can replenish over time you will lose power and have to charge the batteries again to regain full power. batteries are nice if your doing shows and dont want to have your car running constant. but if your amps are less than 3600 watts rms altogether highs and lows you will be fine.</p></blockquote><p></p>

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