DJI Matrice 4D Series – Matrice 4D & Matrice 4TD

Q1: We manage a large plantation and refilling is slowing us down. Would moving to a 50-liter agricultural spray drone make a noticeable difference?

A1: The UA50 is aimed at large farms, plantations, professional spraying businesses, fleet operators and institutional buyers that can support a 50L-class aircraft with trained pilots, field power, transport, refilling and spare parts.

Q2: On a large agricultural drone, I see 50 liters for spray and 80 liters for solids. Can you explain what each figure refers to?

A2: The aircraft has a 50L liquid spray tank and an 80L-volume solid spreader. Confirm which payload system and accessories are included in the selected package.

Q3: If the agricultural drone's spreader holds 80 liters, how do I work out the safe fertilizer weight instead of assuming 80 kilograms?

A3: No. Eighty liters is container volume; the published internal solid load is 50kg. Safe loading depends on material density and flow, so weigh the payload and stay within all aircraft and spreader limits.

Q4: The agricultural drone specification lists 105 kilograms. Is that the payload, the maximum takeoff weight, or something else?

A4: No. The listed 105kg figure is maximum takeoff weight, not useful payload. Do not confuse aircraft operating weight with the 50L liquid tank or the spreader's 50kg internal solid-load specification.

Q5: For a 50-liter agricultural spray drone working over a plantation, what swath width should I plan for?

A5: The published effective spray width is 8–10m. Final route spacing must be calibrated for altitude, droplet setting, speed, wind, crop canopy and the required deposition pattern.

Q6: We need good canopy coverage without too much drift. What droplet setting should I use on a 50-liter agricultural spraying drone?

A6: The listed atomized particle range is 130–250μm. Select and verify the setting against the chemical label, canopy target, weather and drift requirements; one droplet size is not correct for every application.

Q7: Could a large agricultural drone spread our seed and fertilizer, and what working width is realistic for those materials?

A7: The published spread width is 3–10m for compatible materials with a listed diameter of 0.5–5mm. Density, moisture, shape and flowability must be tested and the output calibrated before field use.

Q8: I'm trying to estimate daily output. In real fields, how many acres per hour can a 50-liter agricultural spray drone actually do?

A8: It depends on application rate, route speed, effective width, turns, refill location, battery turnaround, wind and obstacles. Provide field maps and liters per hectare so capacity can be modeled; do not rely on a universal maximum.

Q9: Before I quote a 50-liter agricultural drone, which battery does it take and how many batteries are included?

A9: The current specification lists an 18S 30Ah intelligent flight battery. Only use the approved battery, connector and charging system, and confirm the exact supplied model in the final quotation.

Q10: Is the claim that an agricultural drone battery goes from 20 to 95 percent in about nine minutes realistic day after day?

A10: The product specification lists about nine minutes from 20% to 95% under compatible conditions. Actual time varies with power, temperature, cooling, battery health and charger limits; operational planning must also include inspection and reserve batteries.

Q11: Our crews need the agricultural spray drone running all day. What generator or electrical setup would keep up with charging?

A11: Size the power system from the number of aircraft, battery rotation and simultaneous charging demand. The product lists compatible high-power supply and generator options, but grounding, ventilation, fuel, cable rating and local electrical rules must be engineered for the site.

Q12: For one 50-liter agricultural drone on a busy commercial crew, how many batteries would you normally recommend?

A12: There is no fixed number for every operation. Calculate flight and refill cycle times, charger throughput, battery cooling, peak daily area and contingency capacity; high-utilization contractors normally prioritize continuous rotation and a serviceable reserve.

Q13: I'm comparing 50-liter agricultural drone packages. Is RTK included, and will I still need a base station or correction subscription?

A13: RTK is shown as an option. Confirm whether the aircraft quote includes RTK hardware and which correction service or base station will be used in the destination country.

Q14: If my agricultural drone controller shows a 3-kilometer range, can I actually operate that far under normal farm-drone rules?

A14: No. The 3km figure is an unobstructed communication specification for the H12 controller. Aviation rules, visual-line-of-sight limits, terrain, interference and antenna placement determine what is legal and practical.

Q15: Our plantation has slopes, tree rows, and uneven ground. How well can a heavy agricultural spray drone follow that terrain?

A15: The aircraft includes front and rear obstacle-avoidance radar and terrain-following capability, which can support complex farms. A trained operator must still survey wires, trees, ridges and abrupt height changes and set conservative routes.

Q16: We apply pesticides, foliar fertilizer, and biologicals. Can the same agricultural spraying drone handle all three without compatibility problems?

A16: No universal approval should be assumed. Check that the label permits the intended aerial or drone application, then verify viscosity, corrosion, filtration, dose, droplet target and cleaning procedure.

Q17: What vehicle, crew, water supply, and charging equipment do I need to keep a 50-liter agricultural drone productive in the field?

A17: Plan for the folded aircraft, payload system, batteries, charger or generator, clean water, mixing equipment, PPE, tools, spare parts and secure chemical transport. Crew roles should cover pilot, refilling, battery handling, safety and maintenance as local rules require.

Q18: I'm planning to use a 50-liter agricultural spray drone in the United States. What registrations, exemptions, and applicator approvals should I check?

A18: Do not assume a drone this size can operate under ordinary Part 107 rules. The UA50's listed maximum takeoff weight is well above 55lb; current FAA guidance places agricultural operations at this weight under Parts 91 and 137, with registration, exemptions and an Agricultural Aircraft Operator Certificate, while state pesticide rules can also apply. Verify the current route before purchase or operation.

Q19: We're preparing an agricultural drone tender. Can the supplier provide the compliance documents, training plan, parts list, and after-sales terms?

A19: Request an institutional quotation covering aircraft configuration, payloads, batteries, charging, training, commissioning, documentation, warranty, spares and delivery milestones. Dealer, tender and volume terms require project review.

Q20: Before our pilots operate a large agricultural spray drone, what should the practical training and sign-off include?

A20: A professional handover should cover assembly, preflight inspection, route planning, calibration, payload handling, battery and generator safety, emergency procedures, cleaning and routine maintenance. Local certified pilot or pesticide training may be additional.

Q21: Our spraying window is only a few days. How should an agricultural drone fleet prepare for a pump, motor, arm, or battery failure?

A21: Agree on warranty handling, remote diagnostics, repair authority, parts lead times and a stocked field kit before the season. Keep inspection records and identify critical items such as propellers, pump and flow components, nozzles, seals, arms, landing parts and connectors.

Q22: Some of our sites are smaller and harder to reach. When would a 30-liter agricultural drone be better than a 50-liter one?

A22: Choose the UA30 when its 30L liquid capacity meets the workload and easier transport, lower ground burden or local weight rules matter more. Choose the UA50 when higher volume reduces costly refill cycles and the operation can support its larger logistics footprint.

Q23: We're designing a public agricultural drone program for rural communities. Is a 50-liter platform practical for shared use?

A23: It may fit high-volume programs, but the tender should assess local legal eligibility, operator training, field power, transport, chemicals handling, spare parts, service coverage and post-project ownership. Request a project-specific compliance and delivery document set rather than relying on the retail page alone.

Q24: A bank is reviewing our agricultural drone service plan. Which workload, revenue, battery, and maintenance assumptions should we show them?

A24: Use realistic paid hectares per season, application rates, service pricing, utilization, weather downtime, crew, transport, energy, insurance, maintenance, battery replacement and residual value. A large tank alone does not prove repayment capacity.

Q25: For a commercial agricultural drone fleet, what operating records and safety controls will an insurer usually want to see?

A25: Insurers may request aircraft and pilot records, approved operating scope, mission logs, maintenance history, battery controls, secure transport and incident procedures. Confirm coverage for chemical application, third-party liability, equipment damage, theft and business interruption with the insurer.

General Care Instructions for Drones and Drone Accessories

1. Battery Care

• Charging: Always use the recommended charger for your drone's battery. Avoid overcharging—once the battery is fully charged, unplug it to avoid damaging the battery.
  
• Storage: When not in use, store the battery in a cool, dry place. Avoid exposing the battery to extreme temperatures (below 0°C or above 40°C).
  
• Maintenance: Periodically check the battery’s health and charge cycles. Replace the battery after 300-500 charge cycles depending on its condition.
  

2. Cleaning

• Exterior Cleaning: Use a soft cloth to clean the drone’s body and propellers. Avoid using any abrasive materials that could scratch or damage the surface.
  
• Lens & Camera: Clean the camera lens and sensors with a microfiber cloth to remove dust and smudges. Never use chemical cleaners that might damage the lens coating.
  
• Propellers: Inspect and clean the propellers regularly, especially after use in dusty or dirty environments.
  

3. Storage

• Safe Storage: When storing your drone, ensure it’s kept in a safe, dry place where it won't be exposed to extreme temperatures, humidity, or direct sunlight.
  
• Transport: Use a protective case when transporting the drone to prevent damage. Never leave your drone exposed to the elements, especially in hot or humid conditions.
  

4. Pre-Flight Checks

• Battery: Ensure the battery is fully charged before flying.
  
• Propellers: Check that the propellers are secure and free from cracks or other damage.
  
• GPS and Sensors: Ensure the drone's GPS and other sensors are functioning properly before takeoff. Perform a quick calibration if necessary.
  

5. Post-Flight Care

• Cool Down: Allow the drone to cool down before packing it away. This is particularly important if you’ve been flying for an extended period.
  
• Post-Flight Cleaning: After each flight, clean the drone and check for any damage or wear. Inspect the propellers and motors for any debris or dirt that might affect performance.
  

6. Maintenance & Repairs

• Repairs: For any mechanical issues, contact a certified repair center or technician. Avoid attempting complex repairs yourself unless you're trained.
  
• Firmware Updates: Regularly check for firmware updates for your drone to ensure it has the latest features and safety improvements.
  

7. Environmental Considerations

• Weather Conditions: Avoid flying your drone in strong winds, heavy rain, or extreme temperatures. Always check the weather conditions before flying.
  
• Flying Location: Always ensure that you are flying in an open area, free from obstacles like trees, power lines, and buildings. Check local regulations for any restricted airspaces.

Shipping Policy

1. Processing Time

• Orders are typically processed within 1-2 business days of receipt. If there are any delays due to high demand or inventory issues, we will notify you as soon as possible.

2. Shipping Methods

• We offer several shipping options based on your location. The available methods are:
  Standard Shipping (5-7 business days)
  Expedited Shipping (2-3 business days)
  Express Shipping (Next-day delivery)

Shipping times may vary depending on the destination and availability of the product.

3. Shipping Fees

• Shipping fees are calculated at checkout based on your order's weight, size, and destination. You will be provided with a shipping quote before finalizing your purchase.
• We offer free standard shipping on orders over a certain amount (e.g., $1000) for specific regions.

4. International Shipping

• We ship globally to most countries. For international shipments, please note that customs duties, taxes, and fees are the responsibility of the customer and will be charged by the local authorities upon delivery.
• Delivery times may vary based on the destination.

5. Order Tracking

• Once your order has shipped, you will receive a tracking number by email. You can track the status of your shipment using the tracking link provided.

6. Delivery Issues

• If your package is delayed or lost in transit, please contact our customer service team immediately. We will work with the shipping carrier to resolve any delivery issues.

Return & Refund Policy

1. Returns

• We want you to be completely satisfied with your purchase. If you are not satisfied, you can return most new, unused items within 30 days of delivery for a full refund or exchange.
• To initiate a return, please contact us at returns@uniteduav.com with your order number and reason for the return. We will guide you through the return process.

2. Return Conditions

• Items must be returned in their original condition (unused, undamaged, and in the original packaging) to be eligible for a refund or exchange.
• Non-returnable items include:
  Customized or personalized items
  Opened or used drone batteries
  Sale items or items marked as non-returnable

3. Return Shipping Fees

• Return shipping is the responsibility of the customer unless the item is defective or was sent in error. We recommend using a trackable shipping service for returns to ensure your items are returned safely.
• Free Return Shipping: We offer free return shipping on defective products or if you receive the wrong item.

4. Refund Process

• Once your returned item is received and inspected, we will notify you of the approval or rejection of your refund.
• Refunds will be processed to your original method of payment within 7-10 business days. Depending on your bank or credit card provider, it may take additional time for the refund to reflect in your account.

5. Exchanges

• If you would like to exchange your item for a different size, color, or model, please contact us with your request. If the exchange is approved, we will send out the new item and provide instructions for returning the original product.

6. Damaged or Defective Items

If you receive a damaged or defective item, please contact us within 7 days of receipt. We will arrange for a replacement or refund, including free return shipping for defective items.

For more details, please review our Shipping Policy.