Onboard Power Supply A2.5(400S24,532g) Kitefly

Product Specification

Onboard Power Supply A2.5 (AF-400S24-2.5K) – 24V/48V Tethered Airborne Module for Standard Drones

The Kitefly AF-400S24-2.5K is a 24V/48V dual-voltage tethered airborne module designed to convert tethered ground power for use with standard commercial drones equipped with 6S or 12S battery systems. With a peak power of 2500W and a compact flat-profile design, it enables unlimited flight endurance on off-the-shelf drone platforms without requiring a dedicated tethered UAV.

Key Specifications

· Model: AF-400S24-2.5K

· Compatible Tethered Systems: Kitefly G3, G4

· Dimensions: 188 × 100 × 32mm (L × W × H, excluding pipe clamps)

· Weight: 532g

· Load Interface: XT60 | Output Voltage: 24V / 48V

· Battery Input (BAT IN): XT90 | 24V / 48V

· Battery Output (BAT OUT): XT90 | 24V / 48V

· Rated Power: 1500W | Peak Power: 2500W

· Accessories: 2 adjustable pipe clamps (included)

· Warranty: 1 Year

· MOQ: 1 unit | Availability: In Stock (2–3 weeks lead time if out of stock)

Why Choose the A2.5 for Your Tethered Drone Setup?

The AF-400S24-2.5K solves one of the most common barriers to tethered drone adoption: the need to purchase a purpose-built tethered UAV. This module allows operators to convert their existing 6S or 12S commercial drones into tethered systems, significantly reducing total system cost while retaining the flexibility to use familiar aircraft platforms.

Its ultra-low 32mm profile minimizes aerodynamic impact, while the dual installation method — pipe clamp mounting or direct M3 screw mounting through four standard holes — ensures compatibility with a wide range of drone frame designs. The module supports both 24V and 48V output configurations, making it adaptable to diverse payload and motor requirements.

Installation Options

The A2.5 offers two mounting methods to suit different drone frame structures. The pipe clamp method uses the included adjustable clamps attached to the module backplate (4× M2.5 screws). Alternatively, the module can be mounted directly to the drone frame via 4 standard mounting holes using M3 screws. Both methods are tool-accessible with a standard 1.5mm hex key.

Frequently Asked Questions

Q: Can the A2.5 be used with any commercial drone?

 A: The A2.5 is compatible with standard drones using 6S (24V) or 12S (48V) battery systems. Please confirm your drone's battery voltage configuration before ordering. Contact our team at susy@tetheredsystem.com or WhatsApp +86 19952400441 for compatibility guidance.

Q: Why does the drone still need a battery if it's connected to tethered power? 

A: The drone must take off with a fully charged battery. If ground power is interrupted during flight, the system automatically switches to battery power, allowing the drone to perform a safe emergency landing. The tethered module works in parallel with the battery — not as a replacement.

Q: How long can a drone fly continuously with the A2.5 tethered power module? 

A: Unlike battery-powered drones limited to 20–40 minutes per charge, a drone connected to the Kitefly tethered power system can fly continuously as long as mission requirements demand — hours, or even days with proper operational management. The tethered power supply provides stable, uninterrupted power with no recharging downtime.

Continuous flight duration is determined by the drone's own motor quality, thermal management, and mechanical endurance — not by the power supply. For extended missions beyond 12 hours, we recommend following your drone manufacturer's maintenance guidelines, such as scheduled rest intervals, to protect motor and component lifespan.

This makes tethered power the preferred solution for 24/7 surveillance, long-duration border monitoring, persistent aerial inspection, and any mission where battery swapping is operationally impractical.

Q: What are the two output voltage options (24V vs 48V)?

 A: The A2.5 supports both 24V output for 6S drone platforms and 48V output for 12S platforms. The configuration is selected based on your drone's battery and power input specifications.

Q: Is the A2.5 suitable for heavy-payload or long-duration missions?

 A: Yes. With a 2500W peak power rating, the A2.5 is suited for demanding missions including surveillance, aerial inspection, and extended monitoring operations. For missions with heavy payload or high heat environments, ensure tethered cables are fully extended outside the ground station box to prevent heat buildup.

Q: What installation tools are required? 

A: A No. 1.5 hex socket screwdriver is required for pipe clamp installation. For direct frame mounting, standard M3 screws are recommended.

Related Products: A1.5 (400S24, 380g, 1500W) | A2 (400S48, 530g, 2000W) | A3.5 (400S48, 900g) | A4 (400S50, 930g)