Rust Electrical How-to - Battery Backup System, Splitting Charging, and MANY TIPS ALONG THE WAY!

I've spent a huge portion of my time in wipes studying and testing electrical systems and have come to many best practices. Here I'm sharing a backup battery techniques along with my thoughts along the way. Also in here is some hints at how the popular 'Nih core' works and might give enough info for clever individuals to hook it up (hint: its basically the initial power source as your first battery in a backup system)