I e-mailed Fenix about cleaning the lenses on all my Fenix lights. They responded that they use alcohol to clean the lenses. Of course, YMMV .
I would avoid using alcohol on any kind of lens, be it camera lens, glasses etc.
Lens usually have some sort of coating, I would avoid using alcohol. To get best results, use a clean microfibre cleaning cloth.
Awesome review, selfbuilt...as usual. Keep up the great work.
great review, thanks for the help! New to CPF. i just ordered a tk75. it was cheaper then i have ever seen it before so i jumped on it. i have a few "old" 18650's that are NOT protected. can i use these while i wait for my new ARB-L2's to arrive? or is that a bad idea in this type of light. thanks.