I need a good recommendation for an LED to be used to squeeze every bit energy and deplete the snot out of my collection of Lithiums that my Scorpion and TL-3 Xenon have used and have depleted for their use.
Build yourself a joule thief circuit, otherwise known as a SatCure circuit. Maybe 3 LEDs, I wouldn't recommend more if using generic transistors like the 2N2222. Pop that in to a suitable housing and run them like candles. Thanks to MilkySpit for bringing up that idea in another thread. (Look for milky candle).