I just replaced the battery in my daily use fob for my 2019 again. This is the second replacement after a total of 32 months of use so about 16 months per battery. I had a couple of new (sealed package) 2025 batteries that I found in a junk drawer which were purchased about 20 years ago so I tried them. The open circuit voltage was about 3.279 on each battery, but neither one would operate the door locks so I tried the current test noted above and had the following results:
1st old battery from sealed package about 10 mA.
2nd old battery from sealed package about 6 mA.
Battery removed from fob after receiving low battery warning for several days delivered about 75 mA.
1st old 2032 battery removed from garage door remote delivered about 350 mA.
2nd old 2032 battery removed from garage door remote delivered about 130 mA.
I did not want to shorten the life of the new fob battery so I did not perform the current test, but open circuit voltage was about 3.292 which is just a little higher than the old batteries that were too weak to deliver current.