Last year I started to put the change date on optic batteries. The Aimpoint shown here hasn’t died, but it is dim. So that was a clue I needed to change it.
I have started doing this on all precision rifle scopes with illuminated reticles. I also keep the info in the service logs for the rifle in question. That way the data can be viewed without cracking open the covers.
This strategy gives the user a realistic measure of power usage at your preferred brightness settings. Not the manufacturer’s best case scenario. I’m looking at you, AimPoint.
“Shooting Guns & Having Fun”