It is somewhat concerning that these batteries can’t be relied on for even 2 years of service.
I installed the same Motocraft 850 battery in my 2011 Expy in mid 2019. That battery failed last December, (3.5Y) when suddenly with no warning it went dead and would not take a charge.
It has been my experience for quite some time that OEM batteries (Ford, GM & Stellantis) usually last 3-4 years. I don’t buy off-brand or cheap batteries, so I have no experience with them.
Modern batteries often fail suddenly, with no warning (such as slow crank, lights dimming, etc.).
I live in the Midwest with sub-zero winters and 90+ degree summers. That is hard on the battery.
I replace the batteries in my family’s vehicles every 3-4 years with the OEM battery (not an off-brand) as a matter of vehicle maintenance. I would rather replace a battery in my driveway in 60 degree sunny weather, than sub-zero weather at Christmas time when it is snowing.
My fall vehicle maintenance also includes inspecting the battery terminal connectors and posts, removing and cleaning the terminals, and adding anti-corrosion pads to the terminal post batteries.
I had Corvettes for decades and would store them in the winter. I connected a Battery Tender float-charger to the battery, which kept it in good shape.
I’ve found that modern car batteries are often damaged if discharged even once, such as what happened with your vehicle.
My first paid job with a business was at age 15 - at the local filling station. In addition to light mechanical work and full-service gas service, we replaced car and light truck batteries. Then, the battery was shipped dry and we had to add sulfuric acid to the battery when it was installed. Then, the batteries could often be fully discharged and recharged repeatedly, and they would be good as new. Not any more.