I have talked about this before on here...Those cheap head lights that are by the cash registers in Home Depot, Lowes, etc...Stay away from them...
From my experience there are going to be times that predators will cross in front of you and their eyes will not even shine...I even said on the This NEPA PPHA get together hunt that I could swear that I saw shadows coming to my calls but I just could not pick up the eyes.
What a shame too...I played with this coyotes brain....Here he comes in right in shotgun range...I put the shotgun up to let him have it and the cheap cash register light hits his eyes and he was gone in a instant. I knew then I would only keep these in my hunting pocket for safety..Just say my go to hunting lights or light failed..I would put this cheap light on only for safety sake....
Buckwheat he Furbug may be talking about that light that does not have a battery pack..It just a head light with a rechargeable head. Saw pictures of kill with the light...There the red fox, and the light, and then there is snow in the pictures..As you all know you don't need a light when there is snow on the ground...Most times?
However I am learning things from Buckwheat on this post...Notice that his kills are at 50 yards and he gets a hairy trigger finger if they go beyond that...See many of us assume that all these lights that we can pick one off at 200 and 250 yards with a rifle..
Now do we want a 100 yard light for the 50 yard shot or do we want the 200 yard light for a 50 yard shot or do we want the 250 yard light for the 50 yard rifle shot? Are we buying to much power and we should be using the 100 yard light

So I have killed fox at 50 yards with a shotgun already...Do I really want to use a rifle? Maybe I should stick to the scatter gun with Remington Hevishot since the kill area would be the same as a 50 yard rifle for night time predator hunting?