I'v run several brands of wet cell and amg, it's hard to beat a group 29 Wallmart 29everstart max. The max is $99 and full replacement for two years!!! If it even shows the slightest hint of a slow crank and get a new one for for 2 years at no cost. I run 2 large gps/sonar units, live wells on all day and never use the timer not to mention power poles and have never had one die.