![]() In comparison most other AGM batteries of this size and reserve capacity are around $250.00. The Deka's offered at Sam's Club, however, are made in the US, PA to be exact, have a 3 year full replacement warranty and cost only slightly more than a group 31 wet cell ea. They can be used for both starting and deep cycle applications, but they do. The biggest disadvantage is weight (not a concern for me) and cost. They are affordable, reliable, and can provide high amounts of power when needed. AGM's have some specific advantages over wet cell in marine applications, the most important being they are safer, but they also discharge more slowly when stored, recharge more fully over time, and last considerably longer than wet cell batteries. From what I read I felt the best value for a deep cycle application was the Deka group 31 AGM battery sold by Sams Club. Specifications Part NumberGC2-ECL-UTL Group SizeGC2 Cold Cranking Amps (CCA) Cranking Amps (CA) Reserve Capacity (RC)447 minutes Amp Hours (Ah)225 Length10 5/16 inches Width7 1/8 inches Height11 inches Termination CodeTOP Voltage6 Wet/DryW TechnologyFlooded Warranty View warranty by purchase date. I had 2 Group 27 Interstates in my boat and wasn't satisfied with my run time. I just went through a somewhat exhaustive study of batteries specifically investigating AGM vs traditional wet cell deep cycle.
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