you probably get a thousand replies on what name brand to buy from all state to sears or who the heck knows,but here,s the story on batteries.buy a deep cycle.find a no maintenace type.the refill type is for hot conditions like a engine compartment. trolling motors and the battery are not stored in hot enough areas to have a fill type.avoid acid spill and filling buy a no maint.battery.there are not that many battery factories so your delco,sears, all state etc. could all be made in the same plant,battery engineering is not new so,there all the same in deep cycle. the most important thing,read my lips or fingers is age of battery . buy from a store that has a big turn over of stock, kmart,wal mate etc. AND CHECK DATE BATTERY WAS MADE. the newer the better nothing more than 3months old. you see what really kills a battery is shelf shuffle they move the older ones forward. as a battery sits the plates break down and short each other out causing battery failure. if that puppy has been in the back room for 10 months don,t expect a good result