The 11m flatbed semi-trailer is built for large-scale mobile BESS applications, supporting 3392kWh capacity on a single platform. It enables high-capacity energy storage systems to be transported and deployed without splitting the system across multiple units, making it more efficient for large projects.
Designed for heavy loads and long-term operation, the trailer features a reinforced structure and multi-axle configuration to ensure stable transport under demanding conditions. Its flatbed design supports direct installation of containerized BESS units, simplifying system integration and reducing on-site setup time.
This semi-trailer is well suited for industrial power supply, large construction sites, and off-grid energy projects where high capacity, transport stability, and operational reliability are critical.
Key Features
High Load Capacity for Large-Scale BESS
Supports up to 26 tons, making it suitable for transporting containerized energy storage systems and other heavy-duty equipment.
01
Stable Multi-Axle Configuration
3-axle design improves weight distribution and ensures stable transport performance, especially under high-load conditions.
02
Reinforced Chassis for Heavy-Duty Operation
High-strength main beam and reinforced structure provide reliable support for long-term, high-intensity industrial use.
03
Container-Ready Flatbed Platform
Equipped with container locks for secure mounting, enabling efficient installation and safe transport of containerized BESS units.
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Specification
| Category | class | parameter |
| Type | 11m Platform Semi-Trailer | |
| Curb Weight | 6500 kg | |
| Rated Load Capacity | 26,000 kg | |
| Dimensions (L×W×H) | 11000 × 2550 × 1600 mm | |
| Chassis & Structure | Main Beam | H=500 mm; Upper/Lower Wing Plates: 10/12 mm; Web Plate: 6 mm |
| Deck | 3 mm checkered plate | |
| Container Locks | 12 sets of container-specific locks | |
| Suspension & Axle System | Suspension | 3-axle mechanical suspension (φ60, reinforced, wear-resistant plate) |
| Axle | 13T drum axle with mechanical adjustment arm, with ABS | |
| Leaf Spring | 10 pcs × 13 × 100 | |
| King Pin | Bolt-type 90#-10 | |
| Wheels & Tires | Tires |
12/R22.5 12++ 9pcs
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| Rim |
22.5×9.0 16mm 9pcs
|
|
| Landing & Braking System | Landing Gear | 19-inch, 28T single-action |
| Brake System | ABS (4S/2M) | |
| Brake Chamber | 4 double + 2 single chambers | |
| Air Reservoir | Steel, 2 pcs | |
| Electrical & Accessories | Electrical System | 24V LED |
| Tool Box | Fully sealed steel toolbox (1 m) | |
| Spare Tire Carrier | 1 pc | |
| Rope Tightener | 20 pcs | |
| Rope Hook | 42 pcs | |
| Surface & Others | Painting Process | Electrostatic powder spraying |
| Paint Color | White (customizable) | |
| Nameplate | English model nameplate | |
| Transport Mode | 3 units bundled for bulk cargo transportation | |
Purpose-Built 11m Flatbed Semi-Trailer for Containerized Battery Energy Storage
Our 11m container flatbed semi-trailer is designed specifically for transporting and deploying high-capacity containerized energy storage systems, eliminating the common issues that arise from adapting standard logistics trailers: misaligned mounting points, insufficient structural reinforcement for concentrated loads, and repeated custom fabrication at every deployment site.
We built this platform with BESS-specific engineering throughout:
01
12 Dedicated Container Locks
Pre-positioned to match standard BESS container footprints. Containers fasten directly with no welding adapters or improvised tie-downs required.
02
500mm H-Beam Main Structure
10/12mm wing plates and 6mm web, tuned for the concentrated center-of-gravity loads that containerized batteries produce at mid-platform.
03
3mm Checkered Steel Deck
Anti-slip surface that serves as a stable working platform during on-site BESS commissioning and auxiliary equipment installation.
04
Electrostatic Powder Coat Finish
Superior UV, salt air, and abrasion resistance compared to wet paint. Built for outdoor BESS installations exposed to harsh conditions over extended periods.
Container Flatbed Semi-Trailer Application Scenarios
This semi-trailer is built for large-scale containerized BESS deployment. Here are common real-world application scenarios
Remote Mining & Extraction Sites
Mines in Australia, Sub-Saharan Africa, and South America increasingly pair mobile BESS with on-site solar to reduce diesel generator dependency. At 3392kWh, a single trailer delivers enough rated capacity for nighttime base-load support at a mid-size operation, reducing the need to coordinate multiple smaller units across unpaved access roads. Explore industrial energy storage solutions designed for these conditions.
Emergency Grid Restoration After Severe Weather
When hurricanes, typhoons, or earthquakes knock out distribution infrastructure, a trailer-mounted 3.4MWh battery system can be on-site and grid-ready significantly faster than temporary transmission lines, providing rapid-deploy power for critical facilities during restoration. Learn more about mobile BESS for emergency and off-grid power.
Large Construction & Infrastructure Projects
Bridge builds, highway expansions, and high-rise developments run heavy equipment that diesel gensets struggle to power cleanly. A mobile battery energy storage trailer offers a lower-emission, lower-noise alternative that can recharge overnight from the grid or on-site renewables, helping teams meet urban site noise and emissions requirements.
Utility Peak Shaving During Seasonal Demand Spikes
Grid operators in hot-climate regions face 3–4 months of annual demand surges. A relocatable BESS trailer can be dispatched to congested feeders and repositioned as demand patterns shift, avoiding permanent substation builds for peak-only capacity. For fixed installations, see utility-scale plant energy storage.
11m Semi-Trailer vs 8.4m BESS Trailer
The 11m platform supports up to 3392kWh and is best suited for utility-scale, mining, and multi-day backup projects. The 8.4m platform handles 1035kWh and fits C&I sites, urban deployments, and rapid-redeployment scenarios. The best choice depends on your capacity requirements, road access constraints, and whether the trailer will be permanently stationed or frequently relocated.
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| Spec | 11m Platform | 8.415m Platform |
| BESS Capacity Supported | 3392 kWh | 1035 kWh |
| Rated Load | 26,000 kg | 13,800 kg |
| Axle Configuration | 3-axle mechanical | 3-axle mechanical |
| Overall Length | 11,000 mm | 8,415 mm |
| Best For | Utility-scale, mining, multi-day backup | C&I sites, rapid redeployment, urban access |
Before You Order
Key Considerations for Ordering & Deployment
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Shipping: 3 Units per Bulk Bundle
Trailers ship as nested bulk cargo, three units per bundle. This significantly lowers per-unit ocean freight costs compared to RoRo or individual container shipping. Your freight forwarder can calculate landed cost based on destination port.
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Weight Distribution Matters
The 26-ton rated load accommodates most 20ft containerized BESS systems on the market. For custom container builds with non-standard cell arrangement, we recommend sharing the weight distribution diagram with our engineering team before order to verify axle loading across the 3-axle suspension. The guide to selecting the right containerized BESS covers sizing considerations in detail.
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Semi-Permanent Platform Use
Many operators deploy the trailer once and leave it on-site permanently. In this case, the platform's structural rating for long-term static load becomes the primary specification. The checkered steel deck and 42 rope hooks provide mounting points for auxiliary equipment such as inverters, switchgear, and cable trays. For projects pairing storage with solar, our microgrid battery storage design guide covers the integration architecture.
Customization Options for the 11m BESS Trailer
The 11m trailer ships in a standard configuration that covers most containerized BESS deployments. The following customization options are available and can be confirmed during the quoting process.
Custom Paint & Branding
Standard finish is white electrostatic powder coat. Custom colors, brand-matched finishes, and custom nameplates are available for EPC contractors and rental fleet operators.
Adjustable Container Lock Layout
The 12 standard locks align with ISO corner casting positions. For BESS enclosures with non-standard footprints, lock positions can be adjusted to match your container's corner casting diagram.
Load Distribution Verification
For custom container builds with non-standard cell arrangement, our engineering team can verify axle loading against the 3-axle suspension layout and confirm compatibility before production.
Structural Modifications
Deck length adjustment, suspension adaptation, and non-standard lock layouts may be available depending on project scope. Feasibility is assessed on a per-project basis by the engineering team.
Getting a quote: To receive a landed-cost quote, provide your enclosure dimensions, corner casting positions, total loaded weight, and target destination country. Polinovel will confirm fitment and freight within 48 hours.
FAQ: 11m Flatbed Semi-Trailer for Mobile Battery Energy Storage
Q: How many container locks does the 11m trailer have and where are they positioned?
A: 12 container locks, pre-positioned to align with ISO corner casting positions for standard 20ft BESS containers. This means a compliant container fastens directly without adapter plates or field welding. For non-standard enclosures, lock positions can be adjusted during production.
Q: What is the rated load capacity and maximum BESS size this trailer supports?
A: 26,000 kg rated load, supporting containerized battery systems up to 3392kWh (approximately 3.4MWh). This covers most 20ft containerized BESS systems currently available. For custom container builds exceeding standard weight distribution, axle loading should be verified with our engineering team prior to order.
Q: What type of suspension does the trailer use, and how does it handle rough terrain?
A: 3-axle mechanical suspension with 13T drum axles, 10-leaf spring packs (φ60, reinforced wear-resistant plate), and ABS (4S/2M). This configuration is specifically chosen over air suspension to distribute concentrated battery loads more evenly across unprepared surfaces such as gravel roads, construction sites, and rural access routes.
Q: Can the trailer be used as a permanent outdoor installation platform?
A: Yes, the trailer is rated for both dynamic (transport) and static (deployed) loads. The electrostatic powder coating resists UV degradation and salt corrosion for long-term outdoor exposure. Many operators deploy the trailer once and use it as a permanent BESS platform for years, with the landing gear remaining deployed on-site.
Q: What mounting points are available for auxiliary equipment like inverters and switchgear?
A: 42 rope hooks and 20 tighteners are built into the 3mm checkered steel deck. These serve as mounting points for inverters, switchgear, cable trays, and other auxiliary equipment typically installed around a containerized BESS during commissioning. The anti-slip deck surface also functions as a stable working platform.
Q: How are the trailers shipped internationally?
A: Three units per nested bulk cargo bundle. This shipping method significantly reduces per-unit ocean freight costs compared to RoRo or individual container shipping. Your freight forwarder can calculate landed cost based on destination port, and Polinovel provides a landed-cost quote within 48 hours of receiving project specifications.
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