G70-M400 Tethered Power Station: A Professional Long-Endurance Power Solution for DJI Matrice 400 UAV
Introduction
As drone applications continue to expand into critical industries such as public safety, emergency response, industrial inspection, surveillance, communication support, and night-time operations, traditional battery-powered UAVs often face one major limitation: limited flight time.
Even with advanced lithium batteries, most industrial drones can only remain airborne for dozens of minutes before requiring battery replacement or recharging. For missions that require continuous aerial presence, stable hovering, and uninterrupted payload operation, a standard battery-powered drone system is often insufficient.
The G70-M400 Tethered Power Station provides an advanced solution by delivering continuous high-power energy from the ground to the drone through a lightweight tether cable. Designed specifically for the DJI Matrice 400 platform, this tethered UAV power system enables ultra-long flight endurance, stable power output, intelligent cable management, and enhanced operational safety.
With a continuous flight capability of more than 24 hours, high-voltage 850V DC transmission technology, automatic cable winding and unwinding, and support for multiple mission payloads, the G70-M400 is designed for professional users who need reliable and extended drone operations.
What Is the G70-M400 Tethered Power Station?
The G70-M400 Tethered Power Station is a complete tethered drone power solution consisting of:
- Ground tether winch box
- Airborne power supply module
- High-voltage lightweight tether cable
- Optional payload systems such as the L24 high-power floodlight
Unlike conventional drone batteries, the system supplies continuous electrical power from a ground source to the UAV, allowing the aircraft to stay airborne for extended periods without battery replacement.
The system converts ground AC input power into high-voltage DC transmission and provides stable onboard power for the drone and connected payloads. It is specifically optimized for the DJI Matrice 400 drone, making it ideal for professional aerial operations requiring long endurance and reliable performance.
Key Features of G70-M400 Tethered Power Station
1. Ultra-Long Flight Duration Over 24 Hours
The biggest advantage of the G70-M400 tethered power system is its extremely long flight endurance.
Traditional UAV batteries limit operation time because energy storage capacity is restricted by battery weight. The tethered system solves this problem by transferring power continuously from the ground.
With continuous generator or grid power supply, the G70-M400 can support:
- More than 24 hours of continuous operation
- Long-duration hovering missions
- Extended surveillance tasks
- Continuous lighting operations
- Emergency communication support
This makes the system especially valuable for applications where the drone must remain in the air for hours or even an entire day.
2. High-Voltage 850V DC Power Transmission Technology
The G70-M400 uses an advanced 850V DC high-voltage transmission system.
Compared with traditional low-voltage power transmission, high-voltage technology allows:
- Lower current transmission
- Reduced cable thickness
- Lower cable weight
- Reduced aerodynamic drag
- Less payload impact on the UAV
The lightweight tether cable reduces the additional load carried by the drone, improving flight efficiency and stability.
The system provides stable onboard power conversion, delivering approximately 51.5V DC output for the aircraft and payload system.
3. Intelligent Automatic Cable Management System
One of the most important innovations of the G70-M400 is its intelligent cable control system.
Traditional tethered drone solutions often require manual cable adjustment, tension control, or operator intervention. The G70-M400 simplifies operation through AI-based speed and torque control technology.
The system automatically manages:
- Cable deployment
- Cable retrieval
- Cable tension
- Winding speed adjustment
The intelligent control system supports cable winding speeds of up to 5m/s, helping prevent:
- Cable sagging
- Cable vibration
- Large swinging movements
- Sudden pulling forces
This enables safer and smoother tethered UAV operation.
4. Lightweight and Portable Design
Although the G70-M400 is a high-power industrial system, it maintains a portable structure.
The ground module features a trolley-case design, making transportation and deployment easier.
Specifications include:
- Ground box weight: approximately 16.8kg
- Cable weight: optional configurations available
- Portable trolley case packaging
- Quick installation structure
The compact design allows operators to transport and deploy the system efficiently in different environments.
5. Plug-and-Play Installation
The G70-M400 is designed for fast deployment.
The airborne power module uses a slide-in quick mounting structure, allowing users to connect the system quickly without complicated installation procedures.
Main installation advantages:
- Fast mounting
- Simple connection
- No complex configuration
- Reduced setup time
Operators can focus on drone missions rather than managing complicated power equipment.
6. Comprehensive Safety Protection
Safety is essential for long-duration tethered drone operations.
The G70-M400 integrates multiple protection mechanisms, including:
Automatic High-Voltage Shutdown
The system automatically disconnects high voltage when detecting:
- Cable damage
- Short circuit
- Cable disconnection
Automatic Cable Recovery
If external power is interrupted, the backup battery automatically activates cable retrieval to improve operational safety.
Contact-Free Operation
The intelligent cable management system minimizes manual handling, reducing operator exposure to high-voltage components.
Multi-Level Protection
Additional protections include:
- Over-voltage protection
- Over-current protection
- Over-temperature protection
- Short-circuit protection
These features improve reliability during demanding industrial missions.
Technical Specifications of G70-M400 Tethered Power Station
General Specifications
| Item | Specification |
|---|---|
| Compatible UAV | DJI Matrice 400 |
| Flight Altitude | 100m / 200m |
| Cable Length | 110m / 220m |
| Flight Duration | More than 24 hours |
| Protection Rating | Air module IP54 / Ground module IPX4 |
| Operating Temperature | -20°C to 45°C |
| Storage Temperature | -40°C to 65°C |
| Ground Module Weight | 16.8kg |
Ground Module Specifications
The ground tether box is the core power management unit.
| Item | Specification |
|---|---|
| Input Voltage | 190-240VAC |
| Power Input | Single-phase 220V 50/60Hz |
| Output Voltage | 600-850V DC |
| Default Output | 850V DC |
| Continuous Power | 7000W |
| Peak Power | 8000W |
| Cable Length | 110m / 220m |
| Maximum Winding Speed | 5m/s |
| Cable Tension Control | 0-20N |
Airborne Power Module Specifications
The onboard module converts high-voltage tether power into stable aircraft power.
| Item | Specification |
|---|---|
| Input Voltage | 600-850V DC |
| Output Voltage | 51.5V DC |
| Continuous Power | 3000W |
| Peak Power | 3500W |
| Weight | 800g |
| Installation | Slide-in quick mount |
Optional L24-M400 High-Power Floodlight Payload
The G70-M400 can support professional payload expansion, including the optional L24 floodlight system.
The L24 floodlight provides:
- 2400W lighting power
- Up to 400,000 lumens brightness
- Large-area illumination capability
- Drone-mounted emergency lighting capability
Lighting coverage can reach:
- Approximately 3,000㎡ at 50m altitude
- Approximately 10,000㎡ at 100m altitude
This makes the system suitable for:
- Night rescue operations
- Emergency lighting
- Security patrol
- Large-area search missions
Applications of G70-M400 Tethered Drone System
1. Security Surveillance
For security monitoring, continuous aerial observation is often required.
The G70-M400 enables:
- Long-duration hovering
- Real-time monitoring
- Persistent aerial observation
- Reduced battery replacement requirements
Suitable scenarios include:
- Large events
- Border monitoring
- Critical infrastructure protection
- Industrial site security
2. Emergency Rescue Operations
During disasters and emergencies, fast deployment and reliable power are critical.
The tethered UAV system can provide:
- Continuous aerial observation
- Emergency lighting
- Communication support
- Search assistance
Potential applications include:
- Flood rescue
- Earthquake response
- Firefighting support
- Night search missions
3. Industrial Inspection
Many industrial inspection tasks require drones to stay airborne for extended periods.
Applications include:
- Power line inspection
- Oil and gas facility monitoring
- Construction site observation
- Large factory inspection
The continuous power supply allows operators to collect stable aerial data without frequent battery changes.
4. Communication Relay
With optional communication modules, the tethered UAV platform can support temporary communication networks.
Possible applications:
- Emergency communication stations
- Temporary network coverage
- Remote area communication support
5. Drone Lighting Systems
When equipped with high-power floodlights, the G70-M400 becomes an efficient aerial lighting platform.
Advantages:
- High-altitude illumination
- Large coverage area
- Long operation time
- Rapid deployment
Ideal for:
- Rescue lighting
- Night construction
- Outdoor events
- Emergency response
Advantages Compared With Battery-Powered UAV Systems
| Feature | Battery UAV | G70-M400 Tethered UAV |
|---|---|---|
| Flight Time | Limited by battery capacity | Over 24 hours |
| Power Replacement | Frequent battery changes | Continuous power supply |
| Payload Support | Limited | High-power payload capable |
| Long-Term Hovering | Difficult | Designed for persistent flight |
| Operation Cost | Higher battery consumption | Reduced battery dependency |
| Mission Duration | Short | Extended |
The G70-M400 is not designed to replace all battery-powered drones but provides a specialized solution for missions requiring persistent aerial operation.
Easy Operation for Professional Users
A major advantage of the G70-M400 is its simplified workflow.
Operators do not need to manually:
- Adjust cable tension
- Control cable speed
- Manage emergency winding
- Configure complicated parameters
The system automatically manages tether operation while the pilot focuses on flying and mission execution.
Supported control methods include:
- Keypad
- Mobile application
- HMI interface
- Drone remote controller integration
Why Choose G70-M400 Tethered Power Station?
The G70-M400 combines:
✔ Ultra-long endurance
✔ High-power output
✔ Intelligent cable management
✔ Lightweight design
✔ Fast deployment
✔ Advanced safety protection
✔ Payload expansion capability
For professional drone operators who require reliable, continuous, and safe UAV operation, the G70-M400 provides a complete tethered power solution.
Whether used for surveillance, emergency response, industrial inspection, communication support, or aerial lighting, this system significantly expands the operational capability of DJI Matrice 400 drones.
Conclusion
The G70-M400 Tethered Power Station represents a new generation of professional UAV power solutions. By combining high-voltage DC transmission, intelligent cable control, automatic winding technology, and continuous power delivery, it overcomes the traditional limitations of battery-powered drones.
For organizations requiring long-duration aerial missions, stable payload operation, and reliable drone performance, the G70-M400 Tethered Power Station is an advanced and practical choice.
With more than 24 hours of flight endurance, professional safety systems, and compatibility with DJI Matrice 400 platforms, it provides the foundation for the next generation of industrial drone applications.
