JAS114 said:I have three Costco Kirkland Group 27s in my boat. They're dual purpose deep cycle/cranking 115AmpHrs. They are made by Johnson Controls(same company that makes Optima batteries) for Costco and will cost you a whopping $68. They have a 36 month warranty. I run a 24v trolling motor off two of them and all my electronics off the other. Work like a champ.
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