I purchased the Cabela's AGM batteries about a month ago. They were on sale $219 down to $125 for the 27 size. That's big as I could fit and I replaced Exide 27's. The advantage is no maintenance and the price was right. But I don't think they pull as good as the one's I replaced. Seems I run the troll motor on a little(5%) higher speed. Time will tell. For a less expensive battery, I also have had good luck with the walmart batteries and with any issues I had with them. Like I said, my main reason for this purchase was the price and no maint. Good luck to you!!
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