a super compact triple XP-L powered by by a Sony VTC5 drawing 6+ amps from the battery
And see... I wish we could see the "re-birth" of simplicity. Two modes - high and low. No programming, no click five times for this or that or stand on your head while turning the head three twists to the left then two to the right, blahblahblah. KISS - keep it simple ******. On - off. One hand operation.
A tilt switch-triggered relay (I had a novelty LED-illuminated bouncing ball some years back that used a similar principle) ... or in newer sekzier terms, an accelerometer that triggers with a specific motion (my smartphone activates the camera from rest with two flicks of the wrist)?