Quantity   Component name
5 × Cree XP-L HI 4000k White LED Old but still good
2 × Samsung 50S 5000mAh 21700 Lithium-Ion cell
3 × Carclo 10197 Elliptical TIR Optic 47 by 10 degree elliptical beam
2 × Carclo 10003/15 Medium Spot TIR Optic 30 degree circular beam
1 × PIC16F1765-I/P MCU to drive the boost converter and handle the UI
1 × 5V linear regulator (for the MCU) MCP1702-5002E/TO
2 × 1.81" square heatsink BDN18-3CB/A01
1 × 33µH 3.4A inductor SPM7054VT-330M-D
1 × 30V 2A Schottky Diode SB230
1 × 5.7A 30V MOSFET AO3400A
1 × 0.2 ohm current sense resistor RL1220S-R20-F
1 × Snappable protoboard Busboard Prototype Systems SB4
1 × USB-C 15W 2S Lithium-Ion Charger Board