Notice: If you attempt anything you see in this video, you do so at your own risk.
DO NOT waste your money now of a cheap soldering iron or soldering station because it will make your life more difficult! It's worth the money to get the right tool now! Check other EE videos and you will get the same reply. I have a drawer with several cheap irons that I used back when I was learning and studying electronic engineering. With the money I spent on those turds, I could have had three of these nice Hakko's. If you're serious about building a real power bank and other EE circuits, you will save hundreds of hours of time and frustration if you take this advise.