For a Cube Orange, I understand the input voltage limit on the aux ports/servo rail is 4.7 to ~10V but I was wondering if there is any current regulation that would prevent me from powering 5 servos on the aux rail and powering the rail from the 6th port. Thanks!
That’s basically the correct way to run servos, and I think I’ve read where 10 amps is the recommended maximum current.
There is no actual current limiting or fuse though, so I would be inclined to connect the BEC and servo power wires externally if you were expecting them to draw more than 5 or 6 amps.
Add up the stall current of all your servos and you need to use a BEC capable of supplying at least that much current.