As an aside, I have found that chem lights on a break away lanyard are ideal for keeping track of young children playing at the campground after dark
Yep ! that's about the only usage I ever found for these chem lights !!
I used to keep a bunch of chem lights in various kits, including hiking and car kits.
9 times out of 10, they were dead when I needed them, even when expiration date was not reached !
No way to know if they are still good or not ; you have to try them and find out !
(when you try them, they usually works ! But when you really need one... bad luck ! They are all dead)
If you want lights in that range of brightness, KRILL lights are OK (use them with Lithium AA batteries).
Just be sure not to store the batteries inside the lights : the weight of the batteries + various "shock testing" while stored, will deform internal parts and the light will no longer be useable.
YMMV + IMHO ...
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