Running the internal battery as well. It's a heavy pig, but those proteks keep a high voltage during flight. Lots of power and lift with the platinum propellers. I wouldn't try with original propellers. They will spin too fast and you'll see Max Motor Speed. The platinum propellers have a higher pitch and it keeps the motors right in the sweet spot for efficiency. I did remove the rear motor covers/feet to allow more cooling. ESC temps were 38C in the rear during flight which is very cool.