I can’t speak for Cyberlux, but I can tell you that the new
generation of bright white LED’s work on 3.5 to 4.5 volt dc current
sources - in other words, 3 normal flashlight batteries.
I have a headlamp that uses 3 AAA cells to power it, and it lasts
almost forever! The manufacturer shows 70 HOURS of intermittent use
from the 3 AAA batteries, powering 4 LED’s at full brightness. I
estimate that continuous use would diminish the time by 20%, to
something like 55 hours. Obviously, D cells would last a very long
It seems like a battery compartment built into each case, with a
multiple position switch would be very nice; one position would be on
all the time, another position might turn off if ambient light was
high, a third position could flash the lights for attention getting,
while an additional setting for low power consumption might be nice.
Are any of you interested in individual spot lighting? Do you want
focused light, or case light?