Just got a 2018 Jeep Unlimited Rubicon pre-owned, never any issues, 60K miles. Parked Sunday, went to leave Wednesday and was dead. Had it jumped, got a new battery Thursday. Went to leave this morning and put the battery dash indicator on to watch with the new battery, and the battery was showing 13.7, but the "meter" was going to zero at a complete stop, and then all the way over to the max of 30+. (is this normal? still learning about the car just 2 weeks' ownership). The car died at a complete stop after the battery meter went to zero. I had it towed to a dealer. They said no codes are coming up, and they're going to have to try and duplicate what the problem is. This is more than battery. ANy experience or thoughts on this?