🔋How does a power bank work? What's inside a power bank?

In this video, I explain how a power bank works -- how it is charged and how it charges your phone and USB devices. I take a power bank apart to see what's inside and explain what the electronic components do. ⚠WARNING: Lithium batteries can be dangerous if not treated with care. Attempt anything shown in the video at your own risk! 💳Affiliate links: USB LED flashlight: http://s.click.aliexpress.com/e/_sG6Y7W http://s.click.aliexpress.com/e/_shKMpS http://s.click.aliexpress.com/e/_svnnPw USB dummy load: http://s.click.aliexpress.com/e/_saU3bE http://s.click.aliexpress.com/e/_stxD5Q ******* Check me out on Facebook:   / leftymaker   Follow me on Twitter:   / leftymaker   More cool stuff on Instagram:   / leftymaker