The XAG AG400 is a high-performance, modular agricultural drone platform designed for precision spraying, granular spreading, and aerial mapping. Operating with a 35-liter liquid payload and centimeter-level RTK navigation, it provides medium-to-large-scale farmers with an automated solution for crop protection, significantly reducing chemical waste and labor costs while maximizing field efficiency.
Overview of the AG400 Ecosystem
As of 2026, the XAG AG400 has established itself as a cornerstone of modern precision agriculture. Unlike earlier generations of agricultural UAVs (Unmanned Aerial Vehicles) that were often cumbersome or limited to a single task, the AG400 utilizes a modular architecture. This allows operators to switch between the RevoSpray system and the RevoCast system in minutes, making it a multi-purpose tool for the entire crop cycle—from seeding and fertilizing to pest control and desiccation.
The platform is built on the SuperX 4 Pro flight control system, which integrates high-performance AI processors and redundant sensor arrays. This ensures that the drone can handle complex terrain, such as orchards or terraced fields, without constant manual intervention. For the modern farm manager, the AG400 is not just a flying sprayer; it is a data-integrated robot that executes pre-planned missions with a high degree of repeatability.
Technical Specifications and Design Architecture
The structural integrity of the AG400 is rooted in its high-strength carbon fiber and aluminum alloy frame. This choice of materials minimizes weight while maintaining the rigidity necessary to support high-torque motors and heavy payloads. The quad-rotor configuration provides a stable aerodynamic profile, which is essential for maintaining a consistent spray pattern even in variable wind conditions.
Propulsion and Power Systems
The AG400 utilizes high-efficiency brushless motors paired with large-diameter propellers. This propulsion system is optimized for "heavy-lift" endurance, allowing the drone to maintain stable flight even when the 35-liter tank is at maximum capacity. Power is managed through the B13960S Smart Battery, which features integrated temperature management and cell balancing to extend the hardware's lifespan. In 2026, these batteries are typically rated for over 1,000 cycles, provided that standard charging protocols are followed using the specialized GC4000+ mobile gas station or the CM12500P intelligent charger.
Structural Modularity
One of the most significant advantages of the AG400 is its foldable design. The arms lock securely into place for flight but can be retracted for transport in the back of a standard pickup truck. The "IPX6K" rating ensures that the entire platform is dustproof and resistant to high-pressure water jets, allowing for easy cleaning after exposure to corrosive fertilizers or pesticides.
Precision Spraying with the RevoSpray 2 System
The AG400’s spraying capability is defined by its use of centrifugal atomization technology rather than traditional pressure nozzles. This is a critical distinction for professionals who require precise droplet size control.
Centrifugal Atomization
Traditional pressure nozzles are prone to clogging and produce a wide range of droplet sizes, many of which are too small (leading to drift) or too large (leading to runoff). The RevoSpray 2 system uses high-speed spinning disks to "flick" the liquid into droplets. Operators can adjust the spinning speed via the XAG One app to produce droplets ranging from 60 to 400 microns.
- Small droplets (60-150 microns): Ideal for insecticides where total coverage of the leaf surface is required.
- Large droplets (250-400 microns): Used for herbicides to minimize the risk of wind drift onto neighboring sensitive crops.
Peristaltic Pumps
The system is equipped with dual peristaltic pumps that provide a maximum flow rate of approximately 12 liters per minute. Because the liquid only touches the internal tubing of the pump and not the mechanical gears, the pumps are highly resistant to wear from abrasive chemicals. The flow rate is automatically synchronized with the flight speed, ensuring that the dosage per acre remains constant regardless of whether the drone is accelerating or slowing down at the end of a row.
Granular Spreading with RevoCast 2
For applications involving solid fertilizers, seeds, or cover crops, the AG400 integrates the RevoCast 2 system. This module replaces the spray tank with a 50-liter granules container (capable of holding roughly 35-40kg of material depending on density).
The RevoCast 2 utilizes a dual-impeller design. Unlike gravity-fed spreaders that can be uneven, the AG400 uses a vertical screw feeder to precisely control the volume of material delivered to the spinning impellers. This results in a "curtain" of granules that can reach a spread width of up to 10 meters. This system is particularly effective for:
- Rice Seeding: Direct sowing into paddies.
- Top-dressing Fertilization: Applying urea or NPK mid-season.
- Pasture Seeding: Efficiently covering large areas of uneven terrain.
Navigation, Obstacle Avoidance, and Safety
Safety is a primary concern in agricultural aviation, particularly when operating near power lines, trees, or buildings. The AG400 employs a multi-layered safety stack to prevent collisions and ensure flight path accuracy.
RTK Positioning
The AG400 relies on Real-Time Kinematic (RTK) positioning. By receiving corrections from a local base station or a network-delivered signal (NTRIP), the drone achieves horizontal and vertical accuracy within 2-3 centimeters. This precision allows for "row-to-row" accuracy, ensuring that there are no overlaps or missed spots (skips) during the application process.
4D Imaging Radar
To handle obstacles, the platform features an omnidirectional 4D imaging radar. Unlike simple ultrasonic sensors, this radar can detect thin objects like power lines or wire fences from up to 40 meters away, even in low-visibility conditions or at night. The system doesn't just "stop" when it sees an obstacle; it can autonomously calculate a new path to bypass the object and return to its original flight line.
Terrain Following
A downward-facing radar allows the AG400 to maintain a constant height above the crop canopy. This is vital in hilly or undulating terrain. If the height is not consistent, the spray width and concentration will vary, leading to ineffective treatment or chemical burn. The AG400 adjusts its altitude in real-time to follow the contours of the land.
Comparative Specifications Table
The following table compares the two primary configurations of the AG400 platform as of 2026.
| Feature | RevoSpray 2 (Liquid) | RevoCast 2 (Granular) |
|---|---|---|
| Container Capacity | 35 Liters | 50 Liters (approx. 40kg) |
| Max Flow/Discharge Rate | 12 L/min | 80 kg/min |
| Effective Swath Width | 5.0 - 8.0 Meters | 7.0 - 10.0 Meters |
| Atomization/Spread Method | Centrifugal Disc | Dual-Impeller Spreader |
| Droplet/Particle Size | 60μm - 400μm (Adjustable) | 0.5mm - 5.0mm (Dry Solids) |
| Navigation Accuracy | 2cm (RTK Enabled) | 2cm (RTK Enabled) |
| Operating Efficiency | Up to 15-20 Hectares/Hour | Up to 1.5 Tons/Hour |
Software Integration and Mission Planning
In 2026, the AG400 is managed primarily through the XAG One mobile application or the XAG Agri-Cloud platform. The workflow is designed to be "map-centric," meaning the operator first creates a digital twin of the field.
- Surveying: A specialized surveying drone or the AG400 itself (equipped with a camera) flies over the field to identify boundaries and obstacles.
- Prescription Mapping: Using AI-based image analysis, the software identifies areas of high and low weed pressure or nutrient deficiency.
- Mission Upload: The prescription is uploaded to the AG400.
- Autonomous Execution: The drone takes off, performs the mission, and returns to the landing point when the tank is empty or the battery is low.
The software also provides comprehensive logging. Every liter of chemical and every gram of fertilizer is tracked against the GPS coordinates of the field. This data is invaluable for compliance with environmental regulations and for analyzing crop performance at the end of the season.
Operational Limitations and Best Practices
While the AG400 is a robust platform, its effectiveness depends on proper operational management. Users should be aware of several limiting factors:
- Weather Constraints: While the drone is IP-rated, it should not be operated in winds exceeding 8 meters per second (approx. 18 mph). High winds cause excessive spray drift, regardless of droplet size.
- Battery Management: Batteries should never be stored at 0% or 100% charge for long periods. Ideally, keep them at a 50-60% "storage charge." The 2026 XAG batteries include a self-discharge feature to protect cell health.
- Chemical Compatibility: Always perform a "jar test" when mixing new chemicals to ensure they do not precipitate and block the internal lines. Although the centrifugal nozzles are harder to clog, the pumps and flow meters can still be affected by thick, undissolved residues.
- Regulatory Compliance: In most jurisdictions, operators must hold a Remote Pilot Certificate and specific permits for aerial chemical application. Ensure your 2026 credentials are up to date with the FAA in the US, EASA in Europe, or your local aviation authority.
Economic Impact and ROI Analysis
The transition to the AG400 platform represents a significant capital investment, but the Return on Investment (ROI) is typically realized within 1 to 2 seasons for medium-scale operations.
- Chemical Savings: By using RTK and prescription maps, farmers often see a 20-30% reduction in chemical use. The drone only sprays where the weeds are, rather than "blanket spraying" the entire field.
- Zero Soil Compaction: Unlike heavy tractors, drones do not compress the soil. Soil compaction can reduce yields by 5-10% by restricting root growth and water infiltration.
- Timeliness: Traditional machinery often cannot enter a field after heavy rain because they would get stuck. The AG400 can fly the moment the rain stops, ensuring that fungicide applications occur at the critical biological window.
- Labor Reduction: One operator can manage multiple AG400 units in a "swarm" configuration, allowing one person to cover hundreds of hectares in a single day.
Frequently Asked Questions
What is the flight time of the AG400 on a single battery?
The flight time typically ranges between 10 to 15 minutes depending on the payload weight and weather conditions. However, the system is designed for a "continuous cycle" workflow. By the time the drone finishes a 12-minute mission to empty its tank, a second battery is already finished charging in the fast-charging cooling tank. This allows for near-constant operation with just two or three batteries.
Can the AG400 be used for night operations?
Yes, the AG400 is equipped with high-intensity LED searchlights and an obstacle avoidance radar that does not require ambient light. This allows for night spraying, which is often preferred because wind speeds are lower and temperatures are cooler, reducing evaporation and improving chemical efficacy.
How does the AG400 handle "Dead Zones" with no internet or cellular signal?
The platform can operate in offline mode. While RTK corrections are best delivered via a cellular network (NTRIP), XAG offers a local RTK Base Station. This station connects directly to the drone via a proprietary radio link, allowing for centimeter-level accuracy even in the most remote areas with zero cell service.
Is it difficult to repair the AG400 in the field?
The AG400 uses a modular component design. Most major parts, such as the arms, motors, and pump assemblies, are connected with quick-release plugs or standard hex-bolts. In 2026, many authorized dealers offer "field-swappable" modules, allowing operators to replace a damaged arm or motor in under 15 minutes to minimize downtime during the busy season.
Does the AG400 support multi-spectral mapping?
While the AG400 is primarily an application platform, it can be equipped with a basic mapping gimbal for field boundary surveying. For high-detail multi-spectral analysis (NDVI), it is recommended to use a dedicated surveying drone to create the prescription map, which is then imported into the AG400's flight controller.
Final Recommendation for Agricultural Professionals
For growers and service providers looking to scale their precision agriculture capabilities in 2026, the XAG AG400 offers a balanced "sweet spot" between the smaller, entry-level drones and the massive, ultra-heavy-lift platforms. Its 35-liter capacity is sufficient for meaningful acreage coverage, while its quad-rotor footprint remains manageable for a two-person team.
The primary recommendation for new owners is to invest in the full ecosystem: the RTK base station, the mobile cooling-charging station, and at least three smart batteries. This setup eliminates the bottlenecks of downtime and positioning errors, transforming the AG400 from a piece of equipment into a seamless, automated service. Those focusing on high-value specialty crops (vineyards, orchards) or medium-scale broadacre farms will find the AG400's precision and modularity to be a significant competitive advantage.
