How to document your rig's systems for resale

Keeping a simple document (even just a shared notes file) listing your rig's actual installed systems — inverter model/size, battery bank specs, solar array size, any upgrades from stock — makes a real difference at resale time and also makes any future service call faster since a tech isn't starting from zero. Photos of nameplate/model stickers on major components are an easy way to build this over time without much effort.