4.9m Compact Flatbed Trailer
for Mobile BESS
A compact trailer platform purpose-built for small-scale mobile BESS up to 261 kWh - dual AL‑KO braked axles, 3 mm perforated deck, towable by suitably rated standard vehicles.
The full trailer is designed to be light and easy to tow, without the need for heavy transport equipment. It can be moved by standard vehicles and set up with minimal effort on site. The flatbed layout allows the energy system to be installed directly, making the overall setup straightforward.
This model works well for temporary use, emergency situations, and small-scale projects where speed and flexibility matter more than size.
competitive advantage
This trailer offers a variety of advantages.
Trailer-Mounted for Easy Transport and Deployment
Mounted on a trailer for convenient towing, allowing fast relocation and flexible deployment across different job sites.
Faster Relocation Between Multiple Job Sites
Quick and efficient movement supports frequent deployment changes, helping maximize equipment usage and overall project flexibility.
Simple Structure for Easy Operation and Maintenance
The straightforward mechanical design reduces maintenance needs, simplifies daily operation, and improves long-term reliability.
Compact Size for Tight and Limited Spaces
The 4.9m compact design allows operation in restricted job sites where larger trailers cannot be deployed effectively.
Specification
| CLASS | PARAMETER |
|---|---|
| Deck Material | 3 mm perforated plate |
| Structure Type | Lightweight design |
| Axle System | AL-KO braked axle, 2 units |
| Braking System | Mechanical brake |
| Front Support | Aluminum alloy front support wheel |
| Tires | 215R14C, 4 pcs |
| Rear Structure | Pull-out straight ladder |
| Usable Mounting Envelope (L×W×H) | 2928 × 1500 × 1628 mm |
| Model | 4.9m Compact Flatbed Trailer |
| Compatible BESS Capacity | Typically used with ≤ 261 kWh systems |
Polinovel at a Glance
Company-level credentials. Certification status for specific configurations (CE, UL, IEC) available on request by target market.
Features of flatbed trailer
Every component is selected for one job: safely transporting and deploying small-scale BESS units with minimal towing and setup complexity.
Lightweight Chassis Design
The optimized frame keeps unladen weight low, so the loaded trailer remains within the tow rating of suitably rated vehicles - subject to payload weight and local towing regulations.
3 mm Perforated Steel Deck
The flatbed uses a 3 mm perforated plate, providing a stable, ventilated mounting surface for direct BESS installation. Perforations reduce deck weight while allowing natural airflow beneath the enclosure.
Dual AL-KO Braked Axles
Two AL-KO braked axles distribute payload across four contact points and provide independent mechanical braking. This configuration is a widely used standard for towable equipment trailers in this weight class.
Integrated Rear Access Ladder
A pull-out straight ladder at the rear provides access to the battery enclosure for inspection and maintenance, without requiring additional external equipment.
Where This Trailer Platform Is Typically Used
The common thread: sites where the BESS needs to arrive quickly, may need to move again, and can't rely on a fixed pad or crane access.
Emergency & Disaster Relief
When grid power fails, a towable BESS trailer can be moved into place quickly for temporary on-site support.
Remote Construction
For off-grid job sites that move over time, the trailer can be repositioned as the project progresses.
Events & Temporary Venues
Suitable for short-term power needs at festivals, markets, and filming locations where compact access matters.
Telecom & Microgrid Backup
Works well for small infrastructure such as cell towers, rural substations, and agricultural sites needing temporary nearby power support.
Trailer-Mounted vs. Fixed Temporary Power Setups
Why a mobile trailer platform adds flexibility over stationary skid-mount or container-drop approaches for small-scale deployments.
| FACTOR |
Fixed / Skid-Mount Setup
|
Trailer-Mounted Platform
|
| Relocation Speed | Requires crane or flatbed truck for each move | Can reduce crane dependence in many temporary deployments |
| Multi-Site Flexibility | Intended for single-site deployment | Well suited to projects requiring periodic relocation |
| Site Preparation | Often needs concrete pad or leveled foundation | Often deployable on firm, leveled ground, subject to site conditions |
| Transport Cost per Move | Separate transport hire each time | Integrated - tow vehicle only |
| Access to Tight Sites | Limited by crane reach and truck turning | 4.9m compact turning footprint |
| Setup After Arrival | Unload, position, level, anchor | Unhitch, level, connect |
Suitable for Matched Deployment with Polinovel 241kWh 120kW Mobile Hybrid ESS
This trailer platform can be used as a matched solution for Polinovel's 241kWh 120kW Mobile Hybrid Energy Storage System. Built for temporary power, emergency backup, off-grid applications, and mobile EV charging, the system combines 241kWh energy capacity with 120kW output in a compact trailer-based design. It is a practical option for users who need a mobile power unit that can be deployed quickly and relocated as site conditions change. Engineering review is recommended to confirm enclosure fitment, payload, and local towing compliance.
Frequently Asked Questions
Q: What class of tow vehicle is required for the 4.9m BESS trailer?
A: Tow-vehicle suitability depends on the fully loaded trailer weight, braking configuration, coupling type, and local towing regulations - not a single vehicle class.
The unladen trailer is designed to be light, but total gross weight varies with which BESS unit is installed. Buyers should confirm their tow vehicle's rated towing capacity and braked trailer limit against the fully loaded trailer weight before operating. Polinovel can provide laden weight data for specific BESS-trailer configurations on request.
Q: Is this trailer sold as a standalone platform, or only matched with a Polinovel BESS?
A: Both options are available - standalone trailer platform, or pre-matched with a Polinovel 261 kWh 160kW BESS.
When sold as a matched package, the mounting points and enclosure envelope dimensions are pre-aligned with the BESS enclosure, which simplifies integration. For standalone purchases, the flatbed accepts third-party enclosures that fit within the usable mounting envelope of 2928 × 1500 × 1628 mm. In either case, Polinovel's engineering team reviews the enclosure specs to confirm structural and dimensional compatibility.
Q: Can this trailer accommodate a third-party BESS enclosure?
A: Compatible third-party enclosures can be reviewed based on dimensions, loaded weight, center-of-gravity distribution, and mounting requirements.
Enclosures that fall within the 2928 × 1500 × 1628 mm usable mounting envelope and respect the axle weight rating are candidates for installation on the flatbed. Polinovel's engineers will review your enclosure dimensions, weight distribution, and mounting pattern to confirm fit, and advise on any deck reinforcement or adapter plate needed. Custom mounting envelope dimensions are also available for enclosures that fall outside the standard configuration.
Q: What road regulations and axle-load factors should buyers check before ordering?
A: Check your local limits for braked trailer gross weight, towing license class, coupling-type approval, and axle-load per road class.
Regulations vary significantly by country and region. Key factors include maximum braked trailer weight allowed for the intended license category, mandated lighting and reflector standards, approved coupling types, and per-axle weight limits for the road class where the trailer will operate. Polinovel can advise on common regulatory frameworks and adjust the brake system, lighting package, and coupling to suit specific market requirements.
Q: What customization is possible on the 4.9m trailer platform?
A: Dimensions, axle count, braking type, coupling standard, deck material, corrosion treatment, and auxiliary fittings are all configurable.
All modifications go through engineering review to ensure structural integrity and compliance with the target market's trailer regulations. Common customizations include stretched or widened platforms for larger enclosures, upgraded axle ratings for heavier payloads, hydraulic or electric brakes where required by law, hot-dip galvanizing for coastal deployments, and integrated lighting packages for road-legal operation in specific regions.
Q: What information does Polinovel need to quote a trailer matched to my BESS?
A: Provide your BESS enclosure dimensions and weight, target country, coupling type, compliance standards, quantity, and delivery port.
With this data, the engineering team can recommend the correct axle rating, braking configuration, deck reinforcement, and surface treatment. If you are also sourcing the BESS from Polinovel, a single quote covers both the energy storage system and the trailer platform as a matched package - simplifying procurement and ensuring mechanical compatibility.
Need a larger trailer platform? See our 627kWh 5.18m drawbar flatbed trailer.
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