components:
1) 4xM2
2) https://vi.aliexpress.com/item/4000559875991.html
3) https://vi.aliexpress.com/item/4000194710902.html
4) https://vi.aliexpress.com/item/1005001861065786.html
5) https://vi.aliexpress.com/item/1005001412953443.html
instruction
1. prepare electronics
2. put in place connector and wire
3. add 2 sided tape
4. stick the 18650 holder
5. solder everything
The author marked this model as their own original creation.