Quantity   Component name
1 × LED, CREE XML2 <a target="_blank" rel="noopener noreferrer" href="http://www.ledsupply.com/leds/cree-xlamp-xm-l2-leds">http://www.ledsupply.com/leds/cree-xlamp-xm-l2-leds</a>
1 × Heatsink (for LED) Mouser Part # 588-SV-LED-314E
1 × Lithium Ion 26650 Battery <a target="_blank" rel="noopener noreferrer" href="https://www.craftvapery.com/products/mnke-imr-26650-3-dot-7v-high-drain-li-mn-battery">https://www.craftvapery.com/products/mnke-imr-26650-3-dot-7v-high-drain-li-mn-battery</a>
5 × Battery Contacts Mouser Part # 534-1016-1
1 × LED Driver for Flashlight <a target="_blank" rel="noopener noreferrer" href="http://www.dx.com/p/1050ma-rhttp://www.dx.com/p/1050ma-regulated-current-5-mode-memory-led-driver-circuit-board-for-flashlight-diy-3-4-5v-127689#.V1t6-sBVg4Megulated-current-5-mode-memory-led-driver-circuit-board-for-flashlight-diy-3-4-5v-127689#.V1t6-sBVg4M">http://www.dx.com/p/1050ma-rhttp://www.dx.com/p/1050ma-regulated-current-5-mode-memory-led-driver-circuit-board-for-flashlight-diy-3-4-5v-127689#.V1t6-sBVg4Megulated-current-5-mode-memory-led-driver-circuit-board-for-flashlight-diy-3-4-5v-127689#.V1t6-sBVg4M</a>
1 × 3D printed parts! <a target="_blank" rel="noopener noreferrer" href="http://www.thingiverse.com/thing:1620367">http://www.thingiverse.com/thing:1620367</a>