Scraping together some parts, I managed to build a 22AH 12V battery pack, but I don't want to damage the batteries.
I am using 4x 12V 5.5AH UPS batteries wired in parallel.
I have an Arduino Uno, and don't want to spend money on additional equipment. Is there a way that I can use the Arduino to detect low voltage and kill the power?
I've done very little light current electronics, but have a basic understanding. First time working with Arduinos. I bought the Arduino for a different project, but if I can use it for this it would be great.