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Message: <blockquote data-quote="Boomsday" data-source="post: 8417039" data-attributes="member: 621487">Long story short (since I'm on my phone)Big agms have always been recommended for car audio since years ago you always wanted the biggest batt you could find for your setup. Since most agms are only rated in amp hours that became the norm. What people didn't know was that those big agms had a lot of cca as well just not specifically printed on the labels.Since music has lots of dips and spikes you would want something that closely resembles that. So when you are starting a vehicle those first couple of seconds are the most important or cca.So In short most high ah Batts have a lot of cca anyway. But if you are gonna be playing with the car on and have a decent size alt, then cca rating is what you are wanting to look for. Or at least a load test to get an idea of its rating</blockquote>

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