thanks...I had the exact same issues. The dealership changed out the "Intelligent Battery Sensor". It still acted up, until I did a long Trickle charge, when I was out of town, for a week.
Now the ESS is working well, and is just as annoying as when the Jeep was new. No new batteries were needed, like most here seem to think are needed.
not exactly sure how to do a trickle charge. What is needed?