Where did you find this gem?
I once built a HealthKit TV which included a small voltmeter. I think it was the first thing to be built, and it included instructions to solder in the “D” size battery. I did and that battery lasted close to 30 years!
Also, the batteries in my pacemakers have lasted 7-11 years. Of course they have no intention of changing the battery, they just change the whole device.