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Car Audio Help
Wiring, Electrical & Installation
Do I need a HO Alternator?
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<blockquote data-quote="Roland" data-source="post: 7966974" data-attributes="member: 647142"><p>[quote name='&gt;&gt;SQL</p><p></p><p>How would an 80 amp alternator keep 2 batteries charged and provide enough power to run the rest of the car' date=' it cannot is the answer.</p><p></p><p>I bet if you stopped selling batteries and started selling alternators all of a sudden you would be telling everyone that they do not need a second battery and they just need one of your alternators.[/quote']</p><p></p><p>Here here, You are right about adding batteries NOT being the correct answer, at least for 95% of us.</p><p></p><p>But just to clear things up. Alternator's keep up with electric demands, or try too. Adding another battery does not increase demand by itself. Turning it up loud is what increases demand.</p><p></p><p>The only reason to have extra batteries is if your doing competition stuff, or just want to turn it up high for short periods of time.</p><p></p><p>The Best option is to put a amp meter on your alternator (or even on the + lead going to your amps).</p><p></p><p><strong>There is no reason to be guessing about what your electrical demand is when measuring is so easy.</strong></p><p></p><p>Personally i just use a portable $50 RMS digital clamp-on amp meter. Then turn the most demand music I like, play to the max listen level i can stand, and measure what it uses.( also having headlights and fan blower on) If that measurement is higher than my alternator can put out. Then look it buying a HO alternator or not playing the music that loud.</p></blockquote><p></p>
[QUOTE="Roland, post: 7966974, member: 647142"] [quote name='>>SQL How would an 80 amp alternator keep 2 batteries charged and provide enough power to run the rest of the car' date=' it cannot is the answer. I bet if you stopped selling batteries and started selling alternators all of a sudden you would be telling everyone that they do not need a second battery and they just need one of your alternators.[/quote'] Here here, You are right about adding batteries NOT being the correct answer, at least for 95% of us. But just to clear things up. Alternator's keep up with electric demands, or try too. Adding another battery does not increase demand by itself. Turning it up loud is what increases demand. The only reason to have extra batteries is if your doing competition stuff, or just want to turn it up high for short periods of time. The Best option is to put a amp meter on your alternator (or even on the + lead going to your amps). [B]There is no reason to be guessing about what your electrical demand is when measuring is so easy.[/B] Personally i just use a portable $50 RMS digital clamp-on amp meter. Then turn the most demand music I like, play to the max listen level i can stand, and measure what it uses.( also having headlights and fan blower on) If that measurement is higher than my alternator can put out. Then look it buying a HO alternator or not playing the music that loud. [/QUOTE]
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Do I need a HO Alternator?
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