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.
- Realistically I got 14 months out of this. Not bad considering I usually run it around 7 during the day.
- New battery installed. Date marked on battery and recorded. This way we don’t need access to logs to check age in field.
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.

Why so short? This is my truck gun. So it stays on quite a bit. Sees very cold weather for extended periods. And gets used as well.
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.
Sincerely,
Marky
www.John1911.com
“Shooting Guns & Having Fun”
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