I've had my '18 JLU Sport S for about two years now and I think my Aux/ESS battery is on it's way out. The dealer want's $133 for the replacement here in AZ. Is there a better aftermarket battery that I can get instead (short of switching to the dual battery set up for $1k)? I'm generally not a fan of factory batteries but this is our first Jeep. I can't seem to find an aftermarket one that matches, or even a great description of the one that's in there now dimension wise (12v, 12ah I believe)? Any information/recommendations would be greatly appreciated!