How to Make a Power Bank 5V-28V Variable Output / Mini UPS Circuit Diagram was included in the video at 7.45 or 8.50 Materials Required: 1. Mini Voltmeter - https://bit.ly/2PLFh4d 2. MT3608 Step up Boost Board - https://bit.ly/2EJ1qd4 3. 1S 15A 3.7V Battery Protection Board 18650 - https://bit.ly/2QauNuc 4. USB Female Socket - https://bit.ly/35LFhqh 5. On/Off Switch 12V - https://bit.ly/2SgYNr2 6. TP4056 Charger Board - https://bit.ly/2selRMn 7. 18650 Battery x4 - https://bit.ly/2tA5l9E 8. Piece of Acrylic 9. Wood Panels ATX Bench Power Supply – https://youtu.be/QkKt2ddS-n0 DIY Power Bank – https://youtu.be/0UBQMQ8e4C0 18650 Battery Spot Welder - https://youtu.be/pPY3z0PCav0 Subscribe LahisTech: https://bit.ly/2JHtlyc Subscribe for more future creative project videos. Thank you.