Simple for printing enclosure wuth 18650 battery, charge controller and charge indication LED

BOM:

+ LED 2x5 square lens (optional: use for replace SMD led from charger and place DIP into 3d printed box)

+ TS457 module

+ 18650 LiIon battery

+ Heat brass insert nut M3 (prefer outer diameter 4.2)

+ USB Type C Connector

+ Miniature Rocker Switch 10x15mm

On Part1 and Part2 you can use Fuzzy Skin. (Point distane 0.3mm;Width 0.2mm)

Designed in Freecad 1.0