My parents and some family friends both purchased new batteries the same month, three years ago. They have used the boats on the same trips, both stored like 5 miles from each other. One had Kirklands and one has optima blue tops, Kirklands cracked over first try with no charge first trip out. Optima, dead and had to be replaced every year. He finally purchased a set of Kirklands this year.
I have several other bad stories about optima batteries in boats. Now in a DD truck/car. They are good, but still nearly double the price of any other battery.
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