So, I set out to try to make a battery and duplicate Will's Milk Crate build; but then went on to the briefcase idea as I was wandering the aisles of Harbor Freight. So, here it is. A full supply list and cost is included. This was a fun project and will help me when I'm remote working from the campground next week, and was good prep for my next project of building a 280 AH LiP04 battery for my trailer (cells and BMS on the way . . .But I might go with two Fortune 100 AH instead, so stay tuned for a deal on Eva cells).