Quote:
Originally Posted by bobalong
I would look for a Series 29 deep cycle. Your not really looking for CC (cold cranking) capacity that is for a starting battery. You want one with a large Reserve capacity, usually listed in minutes. I would try and stay with at least 180 minute reserve for a trolling motor.
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Yep,,,,, the higher the reserve capacity , the better for longevity on the water.
These are big batteries physically but they do last longer. I found a group 31 with 210 min RP. At any rate I keep two batteries for my trolling motor (one as a back up spare for those week long fishing trips away from electrical power). I run a smaller group 24 600 CC amp battery for starting the engine. This battery also runs the sonar.