Batteries deteriorate over time and yours must be several years old by now.
The % indication can be misleading but the cell voltage isn't.
Both of your batteries already have very low cell voltages before you launched, much lower than the %...
Never mind all, I guess I should've looked at the log first.
Data shows IMU altitude of 37.1 ft. when RTH was initiated...that explains it. I just don't remember it being that high...getting old, I guess.
To answer...
My 4 year old grandson...
But what about these cunning spots of light tells you they are drones ???
What is it about them that you can see or hear that helps you to tell them from the real starts in your sky?
Berries aren't drones.
You can look closely and tell that they...