One of my favorite lights (probably because I won it here) is the Black Cat AAA light. I like the size and the beam, but about every month or so it will start to flicker or will not reliably turn on.
When I open it up, I always find a sort of greasy residue where the + tip of the battery meets the driver. I clean that off and the light works fine for another month, then I get the buildup again.
1) What the heck would cause that?
2) Would a bit of Di-electric grease cure the problem or make it worse?
None of my other lights seem to exhibit such behavior, not sure why the Black Cat does.
Cheers
Bill