How should I utilize the upgraded 3A BECs on the F405 V5 Stack for power-hungry builds?

The V5 Stack features dual 3A BECs (5V and 9V). We recommend using the dedicated 9V 3A rail exclusively for high-power digital VTX systems like the DJI O3 or Walksnail Avatar. Reserve the 5V 3A rail for your Receiver, GPS, and LED strips. This separation prevents voltage ripple from the VTX from affecting your control link or sensor accuracy during high-current bursts.