Prepping for my battery bank upgrade today

Good morning y'all. Today I'm preparing to upgrade my battery bank as well as how it's hooked up to my solar charger and my inverter. I don't have all the proper pieces to this puzzle yet although the last couple will be here either today or tomorrow. I decided it was time to start getting cables ready so when the last of my parts do come I am ready.

Two years ago when I started this journey I bought a 12 volt system that consisted of a 40 Amp solar charge controller, two 200 watt solar panels, four 12 volt lead acid batteries and a 3000 watt inverter to run my AC electric devices. This initial set up was not very good for my requirements and I have since upgraded a few things and am now upgrading again.

My initial investment in lead acid batteries was a mistake for various reasons. But I listened to a friend who is resistant to change about such things and saved some money on the cost of those versus more efficient Lithium Iron Phosphate batteries at the time. This was 3 years ago and the price difference was significant. Now the price difference is not as significant as a result in the early spring of 2025 I changed over to 4 LiFePO4 batteries and just got 3 more yesterday with one more on the way. The upgrade is a result in about 20 Amp hours per battery as well as more efficient charging and a few other perks I'll get into later.

The other additions I'm making to my system this go round is I'm adding busbars. This will help in a more even distribution while charging and using my batteries. I'm also adding at least one automatic transfer switch. This will regulate the source of the electricity I am using without me having to manually switch plugs and things of that nature.

I'll be documenting this upgrade as I do it and either writing about it or making videos of my efforts. Maybe both.

I hope y'all have an amazing day!