DIY Wifi Router UPS 4x18650

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