This is very (really quick!) and dirty mash up of a battery powered fan and a free power bank.
The power bank is pretty interesting - everything is done by one chip the MP3402A - it’s amazing how few components are actually needed.
My hacked up fan get 5-6 hours on a full charge at high power. Pretty impressive!
I’ve got a big project in the works - so don’t forget to subscribe and hit the bell!