Re: key fob battery
Right after I bought my JGC, I replaced the two batteries just as a precaution and no, the fobs did not need reprogramming.
2013 Jeep Grand Cherokee Overland
5.7L V8, 2WD, Quadratec mats, Sprint Booster, Northstar AGM Battery, Volant CAI, Blastinbob's axleback exhaust, and a X-pipe
Build date: 9/4/12
Bought 01/27/15 with 47,200 miles