Overview
The FLYWOO O4 1S 5V BEC Module is a compact power module designed for 1S micro-drone builds, providing a regulated 5V supply for the DJI O4 system. It supports stable 5V 3A output with a 2.65V input (1S battery voltage) and is built for ultra-small installation space.
Key Features
- Stable output: 5V/3A
- Input voltage range: 2.65V-5V (1S battery voltage)
- Ultra-compact size noted as 11.5 x 8.2 x 2.2mm (also listed as 11 x 8 x 2.2mm)
- Ultra-light weight listed as 0.4g (also stated as 0.3g)
- Test note shown: minimum voltage 2.6V (4K/60FPS recording state)
- Pad labels on the board include VIN, +5V, and GND
Specifications
| Product | FLYWOO O4 1S 5V BEC Module |
| Input Voltage | 2.65V-5V (1S battery voltage) |
| Output | 5V/3A |
| Dimensions | 11.5 x 8.2 x 2.2mm (also listed as 11 x 8 x 2.2mm) |
| Weight | 0.4g (also stated as 0.3g) |
| Board Pad Labels | VIN, +5V, GND |
FAQ
-
Q1: Will it overheat under full 3A load?
Tested temperatures under 3A output remain ≤45°C (113°F) at 25°C (77°F) room temperature. Built-in over-temperature frequency reduction protection is described. -
Q2: What models are compatible?
Supports all 1S-powered 1.6"-2" FPV drones.
What’s Included
- 1x FLYWOO O4 1S 5V BEC Module
- 1x shrink film
- 4x silica wire (Red/Black)
Applications
- Power regulation for 1S micro FPV drones using the DJI O4 system
- Space- and weight-constrained builds (1.6"-2" class noted)
For installation and wiring support, contact https://rcdrone.top/ or email support@rcdrone.top.
Details

The FLYWOO O4-1S BEC provides a stable 5V 3A output from as low as 2.65V input, with clearly labeled 5V and GND pads for straightforward wiring to an O4 VTX.

The FLYWOO O4 1S BEC module uses a tiny 11.5×8.2×2.2mm board and weighs about 0.4g for space-saving 5V wiring.

The FLYWOO O4-1S BEC module connects between the flight controller and DJI O4 VTX using VCC, GND, RX, TX, and SBUS wiring.
Related Collections
