Thanks Subwoofer. So I guess every electronic switch has parasitic drain. Wonder what features/advantages my LD22 lacks as opposed to this HL30 because it has no electronic switch (I assume). If a switch has no click would you say that is a reliable indication that it is electronic?
"subscribe to thread" seems to be automatically selected under "go advanced" but even so got no email telling me you replied. Seems like it never has. My error, somehow?
Even electronic switches tend to have a soft click, and some very high quality make/break switches have almost none, so a switch not having a click is not a real indication, though it may point you in the right direction.
The LD22 has two switches, a make/break tail-cap switch and an electronic switch on the side to change mode when on. The LD22 is not a headlight so fills a different requirement. The HL30 is one of my regular users, it is a great light with excellent beam.