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Amp Killed battery and alternator twice
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<blockquote data-quote="n2audio" data-source="post: 7858003" data-attributes="member: 540940"><p>I think before we go doing our usual -- get a big battery, get a high output alternator, do the big 3 routine we need to actually consider what may be happening.</p><p></p><p>You have 600-700w of amplifier power and a car that uses a 120A alt.</p><p></p><p>There is really no reason to expect your electrical system troubles are due to too much long term current draw. Unless you're all-out blasting non-stop your sound system isn't much more of an impact on the electrical system than running your headlights and hvac blower at the same time.</p><p></p><p>What is the mileage on your car? Alts don't last forever. If you have ~100k or so on your car there's no reason to be surprised your alt failed - with or without aftermarket electronics.</p><p></p><p>If you had an alt failure while using an older battery it would not be surprising if the battery didn't recover.</p><p></p><p>What type of replacement alt did you use? The off-brand (cheap) rebuilt/reman options are hit-or-miss in terms of durability.</p><p></p><p>I always make sure to buy a replacement alt with a lifetime warranty since after the OEM dies my replacements have shown a tendency to only last a year or so.</p><p></p><p>Have you double checked all the electrical mods you've made?</p><p></p><p>It is possible you made an error causing a constant (probably small) drain on the battery, weakening it, making life harder on the alt trying to keep it charged --- one small problem leading to larger ones.</p><p></p><p>FWIW - I've been running ~1500w with 110/130A alts, stock batteries, and minimal wiring mods. Alts do fail once a year or so, but I figure a couple hrs replacing the alt is the price I pay for running what I run.</p></blockquote><p></p>
[QUOTE="n2audio, post: 7858003, member: 540940"] I think before we go doing our usual -- get a big battery, get a high output alternator, do the big 3 routine we need to actually consider what may be happening. You have 600-700w of amplifier power and a car that uses a 120A alt. There is really no reason to expect your electrical system troubles are due to too much long term current draw. Unless you're all-out blasting non-stop your sound system isn't much more of an impact on the electrical system than running your headlights and hvac blower at the same time. What is the mileage on your car? Alts don't last forever. If you have ~100k or so on your car there's no reason to be surprised your alt failed - with or without aftermarket electronics. If you had an alt failure while using an older battery it would not be surprising if the battery didn't recover. What type of replacement alt did you use? The off-brand (cheap) rebuilt/reman options are hit-or-miss in terms of durability. I always make sure to buy a replacement alt with a lifetime warranty since after the OEM dies my replacements have shown a tendency to only last a year or so. Have you double checked all the electrical mods you've made? It is possible you made an error causing a constant (probably small) drain on the battery, weakening it, making life harder on the alt trying to keep it charged --- one small problem leading to larger ones. FWIW - I've been running ~1500w with 110/130A alts, stock batteries, and minimal wiring mods. Alts do fail once a year or so, but I figure a couple hrs replacing the alt is the price I pay for running what I run. [/QUOTE]
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Amp Killed battery and alternator twice
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