I remember some forum members discussing in a thread a while back about the Inforce WML and its possible parasitic drain. Some members reported it while other didn't notice it at all. I have five of these now - two gray and three black.
Out of curiosity I decided to check my lights. All three of the black units lit up instantly and brightly. The two gray units were completely dead! Now, since I change the batteries on all of my weaponlights at the same time (bi-monthly, unless needed), I know that I haven't used them since installing fresh Surefire CR123s. SO... I conclude that it is a problem associated with the earlier "gray" WMLs and not the black ones. Can anyone offer any evidence to the contrary or that could possibly reinforce this theory? I think I may have solved the mystery of why some people complain of battery drain while it is a non-issue for others.
If we can figure this out, I'm sure contacting Inforce will get our gray models replaced with black ones that apparently won't exhibit this behavior.
Edited to add: The batteries had probably not been changed on the gray lights in about six months since one was mounted to an AR pistol that I rarely use and the other to a backup 870 that's been sitting in a gunsock. However- the tailcap lockouts were up and they had not been used since last replaced. The expiration date on the cells read 8-2020.
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