The FlySpark FLS-G1-70M UAV Tethered Power System is a compact, lightweight, and high-efficiency automatic cable management solution designed for professional multi-rotor UAVs. It delivers continuous wired power, data transmission, and automatic retraction control, enabling drones to perform long-duration missions safely and efficiently.
Built from durable aluminum alloy, the system integrates a retraction and deployment winch, tethering box, 70-meter high-strength tether cable, and a ground power module—ensuring reliable flight operations without dependence on onboard batteries.
With its DC 398–450V output and maximum 2000W power capacity, the FLS-G1-70M provides a stable, uninterrupted power supply for drones during fixed-point, surveillance, or industrial missions. The LCD control panel, torque adjustment knob, and transparent inspection window offer real-time control, monitoring, and safety during operation.
✅ Key Advantages
Unlimited Flight Duration – Supports continuous operation without battery swaps.
Lightweight & Portable – Compact body (≈11kg) for easy transport and quick deployment.
Safe & Smart Operation – One-button activation, built-in circuit protection, and real-time LCD monitoring.
Automatic Cable Management – Smooth payout and retraction with torque adjustment for precise tension control.
Plug & Play Integration – No modification required; connects directly to the UAV via an XT90 interface.
Ideal for aerial surveillance, emergency management, industrial inspection, public security, and event monitoring, the FlySpark FLS-G1-70M ensures reliability, safety, and high performance for long-endurance drone missions.
portable automatic retraction and deployment system for tethered drones primarily consists of a retraction and deployment winch, a tethering box with integrated tethering cables, and an integrated tethered ground power supply. This system primarily provides wired power, information transmission, and cable retraction for the tethered drone. The retraction and deployment winch primarily includes the system box, a main frame, a cable storage reel, and control circuitry.
1.2 Main technical parameters
| Serial number | Items | Technical Parameters |
| 1 | System Box Dimensions | 395mm*316mm*220mm (L/W/H) |
| 2 | Single Cable Length | 70m |
| 3 | Weight | 11kg±0.3kg |
| 4 | External Power Supply | AC220V |
| 5 | Maximum Reeling Speed | No less than 2m/s |
| 6 | Operating Mode | Passive payout/active take-up |
| 7 | Ground Power Output | DC398-450V (max 2000W) |
1.3 Instructions
1.3.1 Tethering Box Panel Description:
1) Main Power Circuit Breaker: This is the main switch for all electrical functions, including the tethering box control power supply and the tethering power mains.
2) Main Power On/Off Button: This is the on/off button for the aircraft’s power supply. Pressing this button activates the system’s high-voltage DC power supply, outputting 398-450V DC high voltage, which supplies the drone’s onboard power supply.
3) Main Power On/Off Indicator (integrated in the main power on/off ring): This indicates the tethering box power status.
4) Torque Adjustment Knob: This controls the reeling torque.
6) Transparent Panel: This allows for a visual inspection of the winch cable length.
7) LCD Display Information:
USB Main Power Switch (On/Off)
USB Output Voltage: This displays the current DC output voltage of the ground power supply.
USB Output Current: This displays the current DC output current of the ground power supply.
USB Output Power: This displays the current output power of the ground power supply.
USB Input Voltage: This displays the current DC input voltage of the ground power supply.
USB Input Power: This displays the total AC input power of the system.
1) Connect the included power cord from the mains or generator to the mooring box. Connect the aviation plug on one end directly to the mooring box’s aviation outlet. The other end should be a plug that can be directly connected to a power strip with a power rating of at least 2500W.
1) During operation, first adjust the torque adjustment knob to the lowest setting, then close the circuit breaker. This will power up the system and illuminate the display on the display panel.
2) To power the drone, press the “Power On/Off” button. The tethered box cooling fan will begin operating, and the “Main Power Running” indicator will illuminate steadily. The display will show the current output voltage, current, and power of the main power cable. When the system is carrying current, the indicator will flash, indicating power is being supplied to the aircraft.
3) When preparing to take off, adjust the torque knob to the lowest setting or slightly increase the torque (in windy conditions). Pull the cable out through the drone. To reel in the cable, adjust the torque knob from low to high, synchronizing with the drone’s descent speed. Alternatively, you can adjust the torque from the very beginning to a suitable value to maintain a constant tension in the cable. The drone will release the cable and hover by forcing it to pull. During landing, the cable will automatically reel in due to the tension in the cable. 4) After completing the task, first turn off the main power switch and disconnect the high-voltage DC power supply. Perform the remaining cable reeling operation to prevent any electric shock. Finally, turn off the main power switch and unplug the power cord.
1.3.4 Precautions
1) Before starting use, please ensure the equipment is level and relatively balanced.
2) Operators must wear insulating gloves to prevent accidental electric shock.
3) When adjusting the speed control knob, turn it slowly from low to high, and do not suddenly turn it to the maximum.
4) After reeling or unreeling, wrap the power cord and place it in the box. Do not drag it on the ground.
5) The mooring cable should not be dragged on the ground during use to prevent linting. Be aware of stones or other sharp objects on the ground to avoid cutting the cable.
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