I'm going to be upgrading my FICM to a 58V Swamps unit before long (thanks to tuckman!) and I was considering replacing my batteries as well to make sure I don't damage this new FICM. Currently, I'm only getting readings of like 13.3-13.8V on my CTS, which seems abnormal. Before I jump off and buy $300 worth of batteries, I was wondering if you all would give me your recommendations on what brand of battery I should buy. We've always just ran the Motorcraft 850cca batteries, but I figure that's open for interpretation. As bad as I hate to say it, Walmart carries the best value of battery for the dollar/warranty. O'Reilly's has the SuperStarts that are a little cheaper, but warranty isn't as good. My father in law swears by the Interstates, but I'm not sure why other than they look nice under the hood. Please share with me your personal experience with batteries and let help me pick out a good pair that will last me awhile!
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