What are the primary hardware improvements in the SpeedyBee F405 V5 Stack compared to the V3/V4?

The V5 Stack features a significantly upgraded 55A ESC with a larger CNC heatsink for superior thermal management. It also introduces an enhanced dual BEC system (5V 3A and 9V 3A), providing more stable and higher current output to power power-hungry peripherals like the DJI O3 Air Unit and GPS modules simultaneously.