Flywoo O4 1S 5V BEC is a miniature, ultra-lightweight, and highly efficient voltage regulator specifically designed for use with the DJI O4 digital video system. Its main purpose is to step down the voltage from a 1S battery (typically 3.7–4.35V) to a stable 5V required for powering the DJI O4 video transmitter and other drone components. The module provides stable and clean power, which is critically important for proper video system performance and interference prevention.
Features:
- The built-in overheating protection function ensures safe module operation by automatically reducing the frequency when a critical temperature is reached
- The module operates with an input voltage from 2.65V to 5V, making it compatible with most 1S LiPo batteries
- Thanks to its extremely compact dimensions of 11mm * 8mm * 2.2mm and ultra-light weight of 0.4g, it is ideal for small drones

- Brand
Flywoo
- Size
11mm * 8mm * 2.2mm
- Input voltage
2.65V – 5V (1S LiPo)
- Weight
0.4g
- Output voltage
5V/3A
1 x Flywoo O4 1S 5V BEC Voltage Regulator
1 x Heat Shrink Tube
4 x Silicone Wires (Red/Black)
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Flywoo O4 1S 5V BEC Module