Most overlanders get their 12V electrical system wrong. Not a little wrong — fire-hazard wrong. They watch a YouTube video, buy a battery and some wire, and start crimping. Nobody calculates voltage drop. Nobody checks if their fuse actually protects the wire behind it. Nobody thinks about what happens when you try to charge a LiFePO4 battery at 15 degrees in the Rockies. The result? Melted wire, blown fuses, dead batteries, and in worst cases, a vehicle fire 40 miles from the nearest paved road