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I have marine batteries in my boat. For the starting battery I have a Group 24 AGM battery. It’s has great CCA as it’s used for starting.
Now for my trolling motor batteries that I need Reserve Capacity, I have 2 Group 31 SLA batteries. Deep cycle batteries come in Group 24, 27, 31. For you, if you cannot find a specialty battery, go with a group 31 SLA. You don’t need an AGM type for your application unless you want to pay way more.


Retired guy from Southern Manitoba, Canada.
 
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