LED Astronomy Torch Flash Light

Modelled after Celestron Night Vision Red LED Torch
https://youtu.be/_o72McPcHDA

Build of materials:

3x 5mm LEDS's (Red)
1x lithium battery charger PCB (USB C)
1x lithium lithium 18650 Battery
1x 12mm Latching Button
1x 180ohm resistor (or whatever suits your leds)

Circuit:
solder LEDS in parallel, connect led positive to switch. Connect other side of the switch to the battery positive with resistor in-between. Connect LED negative to negative side of battery. Battery also connects to charger circuit.

Print instructions:
print parts vertically with supports. 0.2mm layer height and 100% infill for strength.

Note:
Tolerances are very small between button and front cap, use thin wire and pre install switch before soldering wires to Leds.