Currently running ( 2 ) North Star Group 31 X2 AGM batteries in parallel for Mercury 250 Pro XS ( 2 stroke ) and ( 3 ) Lowrance HDS 12’s and Garmin 126 SV and LVS32. Current set up works very well but I want to eliminate ( 1 ) of the X2’s for weight reduction. Looking for suggestions on a stand alone battery set up for just the Garmin and LVS32. Thanks Mike