update...
got the car back this past wednesday... then took it for a 9 hour round trip weekend...
it completely stalled out doing 75 MPH on the way up for the weekend. sat on the shoulder for about 5 minutes and then it restarted and finished the weekend trip without any problems. when first re-started, it had the engine light, wrench, and red triangle lights on. then when re-started after a night, just check engine light was on. then the second night i charged the battery and in the morning there were no bad lights on the dash. drove it the whole weekend without AC or anything plugged into the outlets in the car. today on ride back home we ran the AC and then also plugged in one iPhone. all good so far. we shall see how it does tomorrow after plugging in more stuff slowly.