The Sears Die Hard AGM PM-1 is what I have been running with my 2 hds units, 2 lss boxes, aerator and the Opti that needs lots of CCAs. It cost about the same as my Optimas that I have on the trolling motor. Like stated it has a 3 year warranty and comes with 1150 CCA. It has never failed to crank the opti even in 20° temps after an hour on the road to the water. When this one goes, I'll buy another just like it.