Unless I'm mistaken, you can register any drone, including a home-built. There's no database of FCC approved drones connected to the FAA registry system.
Keep in mind that you MUST register any home-built drone over 250g. A system checking drone...
During a Mavic 4 pro flight yesterday I had a battery overheating warning.
The same battery brought up the same warning last time it was used a week ago.
Both times the weather was cool.
Yesterday, the warning appeared when the battery reached...
Even though the Litchi app can't be used with drone generations after the Mavic 2, the Litchi Hub tool, on-line on the web, is immensely useful for planning and tweaking waypoint missions, and has a lot more flexibility for editing and tweaking...