GEPRC O4 Series Step-Down BEC

The GEPRC O4 Series Step-Down BEC is a compact voltage regulator specifically designed for the DJI O4 Air Unit Lite/Wide and DJI O4 Air Unit Pro. It reliably steps down the voltage of a 3–6S LiPo battery to a stable output voltage of 9V or 5V, providing a clean and reliable power supply for the DJI O4 video system.

With an input voltage range of 10.5–25.2V, the BEC is suitable for FPV setups using 3S to 6S batteries. By default, the module provides a 9V output. Bridging the 5V pad permanently switches the output voltage to 5V.

Thanks to its compact dimensions of just 17 × 8.3mm and a weight of only 1g, the BEC can be easily integrated into builds where space is limited. An EN pad for electronic switching control is also provided.

Note: The BEC is strictly a step-down converter and cannot increase the input voltage. The maximum input voltage of 25.2V must not be exceeded. Once the 5V pad has been bridged, the output is permanently set to 5V.

Features

• Specifically designed for DJI O4 Air Unit & O4 Air Unit Pro
• Input voltage: 10.5-25.2V (3-6S)
• Selectable output: 9V / 5V
  
  • Default output voltage: 9V
  • 5V output by bridging the 5V pad
• EN pad for electronic switching control
• Compact dimensions: 17 × 8.3mm
• Ultra-lightweight at just 1g
• Ideal for compact FPV drones and custom builds

Package Contents

• 1 × GEPRC O4 Series Step-Down BEC
• 1 × 6-Pin / 6-Wire Cable
• 1 × 6-Pin / 4-Wire Cable
• 1 × Heat-Shrink Tube