Were you experiencing any specific issue that warranted the battery replacement? Curious what the charge level on the old battery is if checked. I am 2+ years now on our Pacifica's factory installed FOB batteries and no issues. My RAM 2500 is over 3 years on its factory batteries. Previous vehicles have gone 5+ before needing replaced.
2017 Pacifica Touring L Plus w/ Customer Preferred Package 25J - Built 11/2016
Advanced SafetyTec, Tire and Wheel Group, KeySense, 8.4 NAV, Wireless Charging Pad, Hands-Free Sliding Doors and Liftgate, 20-Speaker Harman Kardon Sound Group
2016 Ram 2500 Laramie 6.7L CTD Crew Cab, 4x4, Short Bed