Price:
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Model:
X4-1900H X9 revision review
Wheelbase:
Archived: 1900mm frame
Flight Control:
Conflict: X9 vs X8 propulsion
Empty Weight:
Archived: 18m/s — define current limit
Power Battery:
Archived: two 6S 5300mAh auxiliary packs
Wingspan(without propellers):
Archived unfolded: 1500 × 1500 × 650 mm
Folded Size(without propellers):
Archived folded: 900 × 800 × 650 mm
Empty Weight:
Conflict: 16kg vs 14.5kg empty
Satellite Navigation System:
Multi-GNSS and RTK entry — verify hardware
Endurance Time:
Two hours without payload
Maximum Horizontal Speed:
Archived: 18m/s — define current limit
Image Transmission:
Archived link claim needs equipment identity
Electronic Speed Controller:
Archived fuel-cell output: 48V, 3kW
The heavy-lift hydrogen platform should be judged across its service lifecycle. Cylinder inspection, fuel-cell hours, battery condition, structure, payload interface and return-to-use checks must remain traceable. Article 2430 has a locked archived lead image but no retained gallery images. That lead image alone does not prove the claimed X9 propulsion, 16kg empty weight and 52kg maximum take-off at a stated throttle point on a 1900mm hydrogen platform. Nearby X4-1900H records instead describe X8 propulsion, 14.5kg empty and 29kg maximum take-off. The shared 48V 3kW fuel-cell and folding dimensions do not prove that the larger variant exists as described. Revision-specific documents are required.
| Identity point | Article 2430 | Other family record |
|---|---|---|
| Propulsion | X9 | X8 |
| Empty mass | 16kg | 14.5kg |
| Maximum take-off | 52kg | 29kg |
| Media | Locked lead image; no retained gallery | Lead image and other pages cannot establish this variant |
A model plate, overall photographs, propulsion labels, dimensioned drawing and current parts list should establish whether the X9 airframe is a distinct revision. Do not borrow the X8 gallery to fill the media gap. The source package should also state who issued each drawing, its revision date and which serial range it covers.
Manufacturer structure and propulsion limits, configured weight, centre of gravity, energy-system state and a controlled lawful equipment test belong in separate but linked records. Record the cylinder fill state, auxiliary batteries, mounted civil equipment, weather and reserve so the result cannot be transferred to a different configuration without review.
Ask for manufacturer and physical-unit evidence before comparing large-platform values.
Track high-load platform condition from intake through return to service.
Review the X4-7 INAV configuration, flight-controller and GNSS records, 4S power system, radio/video equipment and navigation handover documents....
Review the X4-10 endurance claim by resolving its 4S/6S battery conflict and documenting propulsion, firmware, installed mass, weather and reserve....
Plan X4-1900H environmental monitoring around sensor calibration, mounting, time and position tags, data custody and payload-specific useful time....
Turn the X4-1900H two-hour archive claim into a repeatable useful-time protocol covering fuel, batteries, sensor mass, route, weather and reserve....
Verify X4-10 portability through a case-to-ready workflow while resolving S7mini, 4S/6S battery, 20/30m/s and packed-size conflicts....
Choose INAV or Betaflight for the X4-7 as a controlled firmware baseline with board checks, backup, sensor review, remapping and retesting....
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Manufacturer Address:Quanzhou Valley Nanan Science and Technology Innovation Center, No. 89 Shijing Avenue, Shijing Town, Nanan City, Fujian Province
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