Emergency power bank | Power bank savior

In this video, I made a power bank using the power bank module and 3D printed parts, but not an ordinary power bank, but a power bank that is small, portable, powerful and has a high capacity. This power bank is used in emergency situations when your phone needs to be charged. It charges your phone and saves you
Join me to take a look at how it is made and enjoy its construction and technology.
Don't forget to like, comment and subscribe.
In this video, I made an hourglass using Arduino and 3D printed parts, but not a normal hourglass, but a digital hourglass that has a gaming look.
Join me to take a look at how it is made and enjoy its construction and technology.
Don't forget to like, comment and subscribe.
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[@user-hf9id7kt9n]

❤🎉

[@MattFixesStuff]

very nice :) How does that board work though. You put 1.5Volt in and get 5 Volt. Does it use a Joule Thief or sometype of transistors turning each other to increase voltage ? Didnt see a coil either.

[@Inventorsidea]

hello my friend
Have a good time and happiness
No. do not make a mistake. This is an 18650 battery that gives a voltage between 3.7 and 4.2 volts with each full charge.
And that module was a power bank module that adds a little to the voltage and outputs 5 volts.😉😉

[@MattFixesStuff]

@@Inventorsideaah thanks :) makes much more sense now.