TK4 Tethered Power System for DJI M400
⚡ 800V High-Voltage Tethered Power: The TK4 Tethered Power System is a next-generation tethered power system designed for the DJI M400 and other high-power drones. Featuring an 800V power supply, 4.5kW output, and support for up to 200m cables, it provides reliable, long-endurance power for demanding missions.
Product Overview
The TK4 Tethered Power System is the latest evolution in tethered power technology, engineered to meet the demanding power requirements of modern enterprise and industrial drones. It utilizes an advanced 800V high-voltage power supply architecture, which significantly reduces line loss and cable heat generation compared to lower-voltage systems. At the same power level, an 800V system carries half the current of a 400V system, reducing cable heat generation to one quarter.
This efficiency allows for longer cable lengths (up to 200m) and stable power delivery (4.5kW output) to the airborne unit. The TK4 is specifically designed to power the DJI M400 and its high-power payloads, including the ML200 matrix light (800W) and GL300 gimbal light (300W) simultaneously, making it the ideal solution for persistent surveillance, search and rescue, and large-scale event security. For agencies requiring continuous aerial coverage, this system is the ultimate DJI M400 tethered power station.
The TK4`s high-voltage drone tether system PLC communication supports high-bandwidth 4.5kW UAV ground power supply, enabling uninterrupted operations. The advanced 800V architecture also makes it an optimal high-voltage drone tether system, and its ability to power heavy loads classifies it as a robust 1500W payload drone power solution, driving intensive night lighting and surveillance gear for 24/7 missions.
Key Features
- 800V High-Voltage Power Supply for Lower Line Loss: The TK4 adopts an 800V high-voltage power supply. At the same power level, the current is half that of a 400V system, while cable heat generation is reduced to one quarter. The airborne unit delivers a stable 50V output with a rated power of 4.5 kW.
- Longer Cable, Higher Flight Altitude: The TK4 system comes standard with a 110m tether cable, with optional configurations up to 200m. This allows the drone to operate at greater heights, making tethered aerial monitoring more efficient and flexible.
- Strong Anti-Interference Capability: The ground station and airborne unit communicate via power line carrier (PLC) communication, supporting 100 Mbps bandwidth for high-frame-rate, high-bitrate 4K video transmission. Video output can be delivered from the ground station via HDMI and Ethernet directly to the command center.
- Supports Higher-Power Lighting Combinations: Features an upgraded lighting power output with a maximum of 1500 W. It can simultaneously support an 800W ML200 and a 300W GL300, delivering powerful combined illumination for demanding missions.
- Grounding Rod Included to Eliminate Induced Voltage: Equipped with a grounding rod to safely discharge induced current near high-voltage power lines, effectively reducing the risk of electric shock to operators.
- Built-in Bluetooth and Wi-Fi Modules: Integrates Bluetooth and Wi-Fi, enabling users to connect to the ground station via a smartphone and operate the system directly from a mobile device. Features a Type-C fast charging port with max 65W support for PD3.0/QC protocols.
Product Display
Technical Specifications
🏠 Ground Station
| Dimensions | ≤ 415×345×254 mm (including handle & base) |
|---|---|
| Weight | ≤ 13 kg (including 110m cable) |
| Input Voltage | 176-264 VAC (50/60 Hz) |
| Output Voltage | 800 V DC |
| Output Power | 4.5 KW |
| Communication Bandwidth | 100 Mbps (PLC) |
| Type-C Fast Charging Port | Max power: 65 W, supports PD3.0/QC protocols |
| Screen Size | 5.5 inches |
| Screen Resolution | 1920×1080 |
| Backup Battery | 2600 mAh, 22.2V |
| Speaker Power | 10 W |
| Video Output Interfaces | HDMI, Network ports |
🚁 Airborne Unit
| Dimensions | ≤ 190×155×86 mm (main body, excluding connectors) |
|---|---|
| Weight | ≤ 2 kg (main body, excluding mounting hardware) |
| Rated Output Power | 4000 W |
| Output Voltage | 50 V |
| Video Input Interface | Type-C |
| Max Operating Ground Elevation | 4000 m |
| IP Rating | IP55 |
| Operating Temperature Range | -20°C to +50°C (without solar radiation) |
| Storage Temperature Range | -40°C to +70°C |
🔗 Cable Specifications
| Cable Length | 110 m (Standard), Up to 200 m (Optional) |
|---|---|
| Cable Current Capacity | 5 A |
| Cable Voltage Rating | DC 2000 V |
| Cable Weight | 1.25 kg/100 m |
| Cable Tensile Strength | > 50 kg |
📌 Ultimate Power and Endurance: The TK4 is the most advanced tethered power solution for the DJI M400, offering 800V efficiency, 4.5kW of power, and the ability to fly at altitudes up to 200m. It provides the foundation for truly persistent aerial operations, supporting high-power lighting, 4K video transmission, and seamless command center integration.
Downloads & Support
📄 Firmware & Manuals
- TK4 Firmware — V01.00.00.27 (2026-08-20) + Release Notes
- User Manual — TK4 User Manual (2026-08-12)
⚡ All technical data sourced from official CZI product documentation. The TK4 is specifically designed for the DJI M400 platform. For the most current information, please refer to the manufacturer’s website. Explore more drone tethering solutions in our store.
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