Interesting! I went out to start my quadcab to go to church last nite, "click" 4-5 yr old battery dead. was a wally world 7 yr deal that they have quit making, and waranting. optima went thru a stage around here where they almost weren`t worth carrying home, never got longer than 3-3 to 3 1/2 yrs. out of an interstate, even got a buddy that sells them. are the mopar batteries sealed batteries ? i like the idea of a sealed battery when it`s in the trunk, it doesn`t have to be in a box, if the rear firewall is sealed.