Portable Power Supply

This project started when I realized I needed a portable power supply. Nothing special but just an adjustable voltage supply that would allow me to test things on the fly.
I decided to use some LM2596 modules as I had quite a few laying around. As I wanted two separate outputs I used 2 for this project.
All the parts i used for this project are listed in the description with the links to where I bought them.
For the 2 LM2596 modules the potentiometers where disoldered and replaced with 2 external ones.
The supply is designed to run on basically any battery (max voltage output is the voltage of the battery - 1.5V). In my case I used a 2 cell lipo battery and included a 3-pin port on the side to balance charge.
This is a small video of the final product: https://youtu.be/P5Va9ukvHRo

Parts list:

LM2596 X2 https://www.aliexpress.com/item/10-PCS-DC-DC-Step-Down-Converter-Module-LM2596-DC-4-0-40-to-1-3/1975111111.html?spm=2114.13010608.0.0.Pp5i9X

Potentiometer X2 https://www.a