If you have the light off, then do the 3 click button move to see battery voltage, and while the display is active, hold the button, it locks, but instead of the little locked padlock symbol shown for locked status, it will show 1 followed by lock symbol followed by a checkmark.
I fiddled around, but could not see any difference in behavior.
Curious if anyone else has played around with the flashlight having shown the 1-lock-checkmark in the display and found anything.