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<blockquote data-quote="AlterEgo99" data-source="post: 5940418" data-attributes="member: 610253">I&#039;m gonna weight in and say a bigger battery is poo.&nbsp; If you are only planning on running your system when the engine is off, then a bigger battery will work.However, when the engine is running and you are driving around town with the bass boomin&#039;, the ALTERNATOR is providing all of your power...NOT the battery.Soooo...you really need to upgrade the &#039;ol alternator to a high output.&nbsp; The factory alternator was sized for the electrical load of your vehicle AND the OEM battery that came with it.&nbsp; Once you start adding huge amps to your vehicle and rockin&#039; car audio, the alternator is gonna need some serious beefing up.Oh, yeah, a lot of 1/0 gauge wire from battery to alternator, battery ground to engine block and engine block to chassis is in order to...along with a MUCH bigger fuse between the battery and the new alternator.There are plenty of sites on the net where you can punch in the wattage of your system and the amp output of your stock alternator to get an idea of how much amperage the new alternator is gonna have to put out...and pay special attention to what it will put out, at idle.</blockquote>

[QUOTE="AlterEgo99, post: 5940418, member: 610253"] I'm gonna weight in and say a bigger battery is poo. If you are only planning on running your system when the engine is off, then a bigger battery will work. However, when the engine is running and you are driving around town with the bass boomin', the ALTERNATOR is providing all of your power...NOT the battery. Soooo...you really need to upgrade the 'ol alternator to a high output. The factory alternator was sized for the electrical load of your vehicle AND the OEM battery that came with it. Once you start adding huge amps to your vehicle and rockin' car audio, the alternator is gonna need some serious beefing up. Oh, yeah, a lot of 1/0 gauge wire from battery to alternator, battery ground to engine block and engine block to chassis is in order to...along with a MUCH bigger fuse between the battery and the new alternator. There are plenty of sites on the net where you can punch in the wattage of your system and the amp output of your stock alternator to get an idea of how much amperage the new alternator is gonna have to put out...and pay special attention to what it will put out, at idle. [/QUOTE]

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