1.Advanced Three-Phase Inverter Architecture

The controller utilizes a three-phase inverter design with 120-degree phase separation, providing smooth and balanced power output. This configuration improves torque delivery, enhances efficiency, and ensures stable motor operation during continuous and variable-load conditions.

2.High-Performance NdFeB Permanent Magnet Motor

The motor is equipped with high-efficiency NdFeB permanent magnets that offer strong magnetic performance and excellent resistance to demagnetization. This design increases power density and ensures consistent output throughout extended service life.

3.Precision Brushless Motor with Pure Copper Windings

Featuring 100% pure copper windings, the brushless DC motor achieves low electrical resistance, reduced operating noise, and precise speed regulation. A high-precision rotor and carefully selected internal components contribute to high working efficiency and smooth, reliable operation.

4.Robust Aluminum Alloy Housing

Both the motor and controller are enclosed in high-strength aluminum alloy housings with integrated heat dissipation structures. The corrosion-resistant design withstands heat, cold, and mechanical stress, protecting internal components and supporting long-term use in demanding environments.

5.Secure Screw-Type Power Connections

Power input and three-phase output lines are directly secured using industrial-grade screw terminals. This minimizes contact resistance, improves electrical stability, and reduces the risk of localized overheating during high-current operation.

1. Robust Aluminum Alloy Housing.

The controller is monolithically cast from high-quality aluminum alloy and engineered with integrated heat dissipation grooves. This structure significantly enhances thermal efficiency, effectively reducing internal heat accumulation and protecting sensitive electronic components during continuous operation and high-load conditions.

2. Secure Screw-Type Electrical Connections.

The power input line and three-phase high-power output lines are directly secured to the controller using industrial-grade screw terminals. This design minimizes contact resistance, ensures stable current transmission, and improves overall electrical safety and reliability.

3. Reliable Long-Term Performance.

The optimized thermal layout and reinforced connection ports are designed to prevent localized overheating. This enables safe, prolonged use without performance degradation, ensuring consistent and dependable operation in demanding applications.

1.Patented Display Screen Design

The system features a patented display screen that provides continuous visibility into the operational status of the battery and electric trailer dolly circuits. This allows users to monitor system health at a glance and identify potential issues before they affect performance.

2.Real-Time Voltage Monitoring and Alarm Function

Real-time voltage display enables accurate assessment of battery condition during operation. The system is designed for maintenance-free use and includes abnormal status alarms to alert users to voltage irregularities or electrical faults, supporting safer and more reliable operation.

3.Secure Screw-Type Battery Connections

The battery terminals adopt a tab-free design and are directly secured using screw connections. This structure minimizes contact resistance, improves electrical stability, and prevents overheating at the connection ports during prolonged use, ensuring consistent performance over time.

4.Designed for Long-Term Reliability

The combination of real-time monitoring, simplified terminal structure, and secure electrical connections reduces system stress and enhances operational safety. By preventing poor contact and localized overheating, the system helps extend battery life and supports dependable performance in daily trailer dolly use.

1.Integrated Power Switch for Easy Operation

The handle assembly includes a dedicated power switch positioned for convenient access. This allows users to quickly power the system on or off, improving operational efficiency and control during trailer maneuvering.

2.Precision Thumb Accelerator Governor

The accelerator governor is manufactured using a high-quality production process to ensure smooth and responsive control. The thumb-operated accelerator enables precise speed adjustment, allowing the electric trailer dolly to be maneuvered accurately in tight or demanding environments.

3.Durable High-Quality Plastic Housing

The control components are constructed from carefully selected, high-quality plastic materials. This provides structural strength, impact resistance, and long-term durability while maintaining a lightweight design suitable for frequent operation.

4.Ergonomic Soft Rubber Handlebar Grips

The handlebar grips are made from high-quality soft rubber that is durable, non-slip, and comfortable to hold. The ergonomic shape provides a secure grip even in wet or rainy conditions, reducing hand fatigue and improving overall handling confidence.

5.Designed for Daily Use

The combination of intuitive control layout, responsive acceleration, and ergonomic grip design ensures stable and comfortable operation over extended periods. The handle assembly supports consistent control performance in both indoor and outdoor working environments.

1.High-Tension Spring Locking Structure

The connector utilizes high-tension internal springs to firmly secure the contact terminals in a locked position. This structure maintains stable contact pressure during operation, reducing the risk of loosening caused by vibration or repeated connection cycles.

2.Copper-Plated Silver Terminals

The terminals are made with copper-plated silver material to ensure excellent electrical conductivity and low contact resistance. This design supports long service life and reliable performance under high-current conditions.

3.Spark-Free Connection and Disconnection

The optimized contact design minimizes arcing during insertion and removal. This improves operational safety, protects the terminals from damage, and supports repeated use without degradation in performance.

4.Easy Installation and Operation

The connector is designed for straightforward installation and user-friendly operation. Its practical structure allows quick connection while maintaining secure electrical contact, making it suitable for both OEM integration and system maintenance.

5.Electrical Specifications

Rated Voltage: 600V

Rated Current: 50A (Maximum)

Insulation Resistance: ≥ 100MΩ (DC 500V)

Dielectric Strength: AC 1000V, 1 minute

1.High-Current 10AWG Battery Output Cable

The main power wires use 10AWG conductors and support a maximum current of up to 140A. This configuration ensures stable power transmission for electric trailer dolly systems while minimizing voltage drop and energy loss under high load conditions.

2.Wide Operating Temperature Range

The cable insulation is designed to withstand extreme temperatures, maintaining stable electrical performance from -60°C to +200°C. This high level of thermal resistance protects the power wires during continuous operation and in harsh outdoor environments.

3.Fine-Stranded Tinned Copper Conductor

The conductors are constructed from 0.08 mm ultra-fine tinned copper strands, with a total of 1050 strands. This high-strand-count structure provides excellent flexibility, low electrical resistance, and enhanced corrosion resistance, supporting long service life and reliable operation.

4.Designed for Long-Term Reliability

The combination of high-current capacity, heat-resistant insulation, and fine-stranded tinned copper conductors reduces thermal stress and conductor fatigue. This design helps prevent overheating and ensures consistent power delivery during prolonged electric trailer dolly operation.

5.Electrical Advantages

Stable high-current transmission up to 140A

• Reduced voltage drop and improved power efficiency
  
• Excellent flexibility for installation in confined spaces
  
• Resistance to heat, cold, and environmental stress
  
• Reliable performance under continuous load

1.LED Charging Status Display

The charger is equipped with an intuitive LED indicator to clearly display charging status.

• Red Light: Charging in progress
  
• Green Light: Fully charged
  

This visual feedback allows users to easily monitor the charging process and battery status at a glance.

2.Wide Input Voltage and Stable Output

The charger supports a wide AC input range, making it suitable for different power supply environments.

• Input: 100–240VAC, 50–60Hz, 1.2A
  
• Output: 28.8VDC, 2.0A
  

The stable DC output ensures safe and efficient charging for electric trailer dolly battery systems.

3.Compact Power Design with Integrated Cable

With a rated power of 57.6W, the charger delivers efficient energy conversion while maintaining compact size. It includes a 5 ft (1.5 m) power cable, providing flexibility and convenience during charging setup.

4.Designed for Safe and Reliable Charging

The charger is engineered to deliver consistent charging performance while protecting the battery from improper charging conditions. Clear status indication and stable electrical output help extend battery life and support long-term system reliability.

1.Dual-Locking Brake Mechanism

The brake system features a dual-locking design that securely locks the electric trailer dolly caster wheels in place. This provides enhanced stability and double safety protection, particularly when the trailer dolly must remain stationary, such as during trailer cover installation or maintenance tasks.

2.Foot-Operated Quick Release Function

When unlocking is required, the brake can be easily released by pressing the red “OFF” button with the foot. Once released, the swivel caster immediately resumes 360-degree rotation, allowing the trailer dolly to respond quickly and smoothly to changes in direction.

3.Heavy-Duty Swivel Caster Construction

The swivel wheel is built with dual ball bearings, heavy-duty rubber tires, and a thickened steel bracket. This structure ensures smooth movement, low rolling noise, and stable performance even under heavy load conditions.

4.Designed for Safety and Stability

The combination of a solid locking mechanism and reinforced caster structure minimizes unintended movement and enhances user safety. Whether stationary or in motion, the brake system provides reliable control and consistent performance during daily operation.

1.Stable Ride with All-Terrain Traction

The tire is designed to provide exceptional ride stability while maintaining strong traction across multiple terrain types. This balanced performance ensures controlled movement and dependable handling on uneven or mixed surfaces.

2.Low Rolling Resistance Tread Design

The proven tread pattern is optimized for low rolling resistance, effectively converting applied horsepower into forward motion. This design improves efficiency and reduces unnecessary energy loss during operation.

3.Directional Aggressive Tread Pattern

Featuring a directional and aggressive tread layout, the tire delivers optimal traction and grip. The tread geometry enhances surface contact and control, supporting precise maneuvering and confident operation.

4.Heavy-Duty 4-Ply Rated Construction

The tire utilizes a reinforced 4-ply rated structure that resists punctures and abrasions. This durable construction improves resistance to wear and damage, ensuring reliable performance and extended service life in tough environments.

5.Designed for Performance and Durability

By combining efficient tread geometry with reinforced materials, the tire maintains stability, traction, and durability under continuous use. The design supports consistent performance while minimizing maintenance requirements.

1.Heavy-Duty Steel Construction for High-Impact Protection

The frame is manufactured using high-quality structural steel materials that meet heavy truck manufacturing standards.

The steel grade complies with ISO HR2 (σs = 235 MPa), providing high strength and excellent resistance to impact forces. This construction protects the electric trailer dolly from mechanical stress and external impacts during operation.

2.Full Steel Frame with Advanced Powder Coating

The trailer dolly adopts a full steel frame treated with German EP coating technology.

With a controlled coating thickness of approximately 33.5 μm, the frame is fully heat-treated and finished with a durable powder coating layer. This process significantly enhances resistance to corrosion, wear, and environmental exposure.

3.Designed for Harsh Working Environments

The combination of high-strength steel material and advanced surface treatment allows the frame to perform reliably in various operating conditions, including outdoor use and industrial environments. The structure maintains integrity and appearance over long-term use.

4.Built for Long-Term Structural Reliability

By focusing on material quality, manufacturing standards, and surface protection, the frame structure provides a solid foundation for electric trailer dolly systems, ensuring durability, safety, and long service life.

1.45-Degree Chamfered Pin Hole Design

The pin hole is precision chamfered at a 45-degree angle, allowing smooth alignment and easy insertion during installation. This design reduces edge wear, improves assembly efficiency, and minimizes the risk of mechanical damage over repeated use.

2.High-Quality Stainless Steel Construction

Manufactured from high-grade stainless steel, the screw
offers significantly higher corrosion resistance and rust protection compared to ordinary materials. This ensures stable mechanical strength and reliable performance even in outdoor or humid environments.

3.Solid Structure for Long Service Life

The robust stainless steel structure provides excellent resistance to deformation and wear. The screw maintains structural integrity under repeated load and operation, supporting long service life without loosening or damage.

4.Designed for Reliability and Ease of Use

The combination of chamfered geometry and corrosion-resistant material allows the screw to perform consistently over time. It supports secure fastening while simplifying installation and removal during maintenance or adjustment.

1.Tool-Free Manual Operation

The fastening system allows users to tighten or loosen components manually, eliminating the need for wrenches or additional tools. This design improves installation efficiency and enables quick adjustments during setup, maintenance, or component replacement.

2.Stainless Steel M8 × 12 Fasteners

The assembly uses stainless steel M8 × 12 fasteners, providing reliable mechanical strength and dimensional stability. The standardized sizing ensures compatibility with common mounting points and structural components.

3.Butterfly Screw Design for Easy Handling

The stainless steel butterfly screws are designed for easy grip and controlled manual torque. This structure allows secure fastening while maintaining flexibility for repeated assembly and disassembly.

4.Corrosion-Resistant Stainless Steel Construction

All components are manufactured from high-quality stainless steel, offering excellent resistance to corrosion and rust. This ensures reliable performance and long service life, even in outdoor or humid operating environments.

5.Designed for Flexible Assembly and Maintenance

The combination of tool-free operation and corrosion-resistant materials reduces maintenance complexity and downtime. The fastening assembly supports frequent adjustments without compromising structural stability or fastening reliability.