A light which can be used as a typical straight light or with a 90 degree segment that can be attached between the head and tube for a use like the old angle-head military style lights.
Solid copper led shelf/cooling segment that threads to reflector ring/housing and battery tube. Titanium reflector segments for reflector, side switch, and batteries.
Small battery, or even a capacitor, that acts as a kind of “reserve-tank” when the main battery runs low or is depleted.
It gives you a minute or so on high, or maybe a quarter of an hour on low, to change the old battery to a fresh one.