Looks like the voltage was low for a number of weeks but the car still started fine. Until today of course. It lasted 2-1/2 years from the build date. Less than that by about a month and a half since I owned the car. The replacement was the same size and I think rated slightly higher. One minute to change the battery, 45 minutes to test and reprogram. You even need to recalibrate the steering angle sensor.
The new battery is an AGM.
The new battery is an AGM.