DJI O4 Relay Specifications: 8 km FCC Range, 6500 mAh Battery & Frequency Bands
DJI O4 Relay User Guide v1.0 publishes the radio bands, region-specific transmitter power limits, region-specific maximum transmission distance, power consumption and internal-battery capacity.
Quick Answer: The manual lists 2.4000-2.4835 GHz, 5.150-5.250 GHz and 5.725-5.850 GHz operating bands. Maximum transmission distance is 5 km SRRC, 4 km MIC/KCC/CE or 8 km FCC under unobstructed, interference-free conditions at a flight altitude of 2.5 m. Power consumption is 10 W, and the internal battery is Li-ion, 6500 mAh.
Operating frequency
The guide lists three frequency ranges: 2.4000-2.4835 GHz, 5.150-5.250 GHz and 5.725-5.850 GHz. DJI notes that 5.8 GHz is unavailable in some countries and tells users to check local regulations.
Transmitter power (EIRP)
| Band | Manual-listed EIRP |
|---|---|
| 2.4 GHz | <33 dBm (FCC), <20 dBm (SRRC/CE/MIC) |
| 5.1 GHz | <21 dBm (FCC/NCC), <23 dBm (CE) |
| 5.8 GHz | <33 dBm (SRRC/FCC), <14 dBm (CE) |
Maximum transmission distance
| Region/system | Distance |
|---|---|
| SRRC | 5 km |
| MIC/KCC/CE | 4 km |
| FCC | 8 km |
These values are not a promise of field range in every environment. DJI states that they are measured unobstructed, free of interference, and at a flight altitude of 2.5 m.
Power and battery
Power consumption is listed as 10 W. The internal battery is Li-ion with 6500 mAh capacity.
Field placement still matters
The operating section separately recommends placing the relay at least 2 m higher than the crops and keeping the antennas unobstructed. Those field instructions should be considered alongside the laboratory/standardized range statement.
Parts & Equipment Referenced in This Guide
Shop Related Collections
Related Tutorials
- O4 Relay Field Placement & Signal Safety
- O4 Relay Charging & Battery Care
- Existing DJI Agras Relay Tutorial
Source and revision note
Primary source: DJI O4 Relay User Guide v1.0 (2024), English Specifications section.
