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<blockquote data-quote="smoka" data-source="post: 5634364" data-attributes="member: 606721">Some of you guys know what you are talking about but most have no clue!Johnson Controls has around 80% market share of after market batteries. They make Interstate, Duralast, generic Walmart, even Energizer car batteries all in the same factory.In one plant they make over 20 brands! There is really not much difference between types of batteries, but there are several main factors that go into how a batt performs. There is the shape of the plates, the plate count, and the thickness of the plates. They generally sell the batts based on the amount of lead used. Then the buyer puts their name on it and charges whatever they want.Like Loopkiller mentioned, there are car starting batteries, and there are car audio batteries. One goes under your hood and one goes in your trunk.If you want something for under your hood, Duralast is good, but I think Interstate or a red top would be slightly better. If you want something for your trunk, then look into the deep cycle batts such as Deka.I don&#039;t know too much about deep cycle batts in relation to car audio, but in my opinion I would not choose Deka for a deep cycle. They are made my East Penn. You can see their plant on Modern Marvels &#039;Lead&#039;. If you watch that you&#039;ll see their quality looks like crap.</blockquote>

[QUOTE="smoka, post: 5634364, member: 606721"] Some of you guys know what you are talking about but most have no clue! Johnson Controls has around 80% market share of after market batteries. They make Interstate, Duralast, generic Walmart, even Energizer car batteries all in the same factory. In one plant they make over 20 brands! There is really not much difference between types of batteries, but there are several main factors that go into how a batt performs. There is the shape of the plates, the plate count, and the thickness of the plates. They generally sell the batts based on the amount of lead used. Then the buyer puts their name on it and charges whatever they want. Like Loopkiller mentioned, there are car starting batteries, and there are car audio batteries. One goes under your hood and one goes in your trunk. If you want something for under your hood, Duralast is good, but I think Interstate or a red top would be slightly better. If you want something for your trunk, then look into the deep cycle batts such as Deka. I don't know too much about deep cycle batts in relation to car audio, but in my opinion I would not choose Deka for a deep cycle. They are made my East Penn. You can see their plant on Modern Marvels 'Lead'. If you watch that you'll see their quality looks like crap. [/QUOTE]

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