Review of an cheap (Inexpensive) Chinese solar charge controller

I have a cheap (Inexpensive) Chinese charge controller which I expect will be useful for small solar power projects. In this video, I will be showing how to connect and use this charge controller. These controllers cost anywhere from $10 to $20, depending on where you buy it (a modest expense if it works, but a waste of money if it doesn't).
Please note that this solar charge controller is only used for Flooded Lead Acid (deep cycle marine) batteries and AGM batteries. Do not use this with lithium batteries.
This controller is intended for solar projects I will be designing and using as needed for any type of grid down situations.

This controller is intended for solar projects I will be designing and using as needed for any type of grid down situations.
Link to charge controller: https://amzn.to/36Q62Qa