Verified
Overheating, sudden current surges, and poor cooling can cause electric tricycle controllers to fail within months. This leaves fleet vehicles out of service and increases repair costs.
For distributors and fleet buyers, a controller needs to handle heavy loads reliably over time.
The Avetlink AK 18-tube aluminum-substrate brushless controller is designed for these demanding conditions.
It uses an aluminum-based circuit board instead of a conventional FR-4 board, reducing thermal resistance by 40%. Heat spreads across the board, reducing heat buildup around the power transistors, known as MOSFETs.
Key Specifications and Benefits
- Current rating: 40A–45A.
- Supported voltages: 48V / 60V / 72V.
- Improved cooling: Aluminum-substrate construction helps heat escape more effectively.
- Stable performance: Maintains steady current output during sustained heavy-load operation.
The AK controller helps address the heat buildup and performance loss that can cause standard controllers to overheat and fail.
Technical Specifications
Core Parameters
| Parameter | Value |
| Tube Count | 18 |
| Voltage | 48V / 60V / 72V |
| Undervoltage Protection | 41V / 51V / 61V |
| Current Limit | 40A / 45A |
| Rated Power | 800W / 1000W |
| Accelerator Voltage | 0.8V – 4.3V |
| Wire Diameter | Terminal |
| Operating Temperature | -20°C – +45°C |
| Max Altitude | ≤ 4,000m |
| Shell Material | Cast aluminum with aluminum substrate PCB |
| Color | Customizable (gray, gold, blue, orange) |
| Origin | China |
Avetlink AK Controller Protection Features
- Overcurrent protection: Automatically cuts off power when the current exceeds the rated limit.
- Low-voltage protection: Uses 41V / 51V / 61V cutoff thresholds to protect the battery from damage caused by excessive discharge.
- Overheating protection: A temperature sensor shuts down the controller when it reaches a critical temperature.
- Short-circuit protection: Responds immediately to short circuits caused by wiring faults.
- Reverse-polarity protection: Protects the controller if the positive and negative power connections are reversed during installation.
Certification and Compliance Information
Contact Avetlink to confirm which certifications and compliance documents apply to the AK controller.
A Practical Choice for Cargo Tricycles
For cargo tricycles carrying 300–600 kg, an 18-tube controller with an aluminum-substrate circuit board offers a practical balance of cost, cooling, and reliability.
A 12-tube controller may reduce output during sustained heavy-load operation. A 24-tube controller can cost 30–50% more and provide more capacity than standard cargo applications need.
The Avetlink AK 18-tube controller is designed to meet these everyday cargo requirements.
Square-Wave or Dual-Mode Operation
The AK 18-tube aluminum-substrate controller uses square-wave control by default, focusing on strong pulling power for cargo transport.
Firmware-upgradeable versions support two operating modes:
- Square-wave mode: Strong torque for carrying loads.
- PMSM sine-wave mode: Quieter operation with compatible motors.
Supported dual-mode versions use the same hardware platform and one part number, reducing the need to stock separate controllers for each mode.
Why Choose the Avetlink AK Controller?
Better Cooling with an Aluminum-Substrate Board
Conventional FR-4 circuit boards can develop hot spots around the power transistors, known as MOSFETs. Over time, this heat can weaken solder joints and cause board failure.
The AK controller uses an aluminum-substrate, metal-core circuit board to spread heat across the board. This reduces thermal resistance by approximately 40%, helping the controller release heat more effectively during extended operation.
Stable 40A–45A Current Output
Current control affects both protection and vehicle performance. When a controller gets too hot and reduces its output, a loaded tricycle can lose speed.
The AK 18-tube controller is designed to deliver 40A–45A sustained current without thermal throttling under normal operating conditions. This helps cargo tricycles maintain more consistent power and speed while carrying loads.
Choose a Compatible Drive System
For reliable operation, the controller must match the vehicle’s motor, battery, and drivetrain.
Before ordering, confirm:
- Battery voltage and motor power.
- Required current rating.
- Motor type and supported control mode.
- Wiring and connector compatibility.
- Compatibility with the vehicle’s motor and differential assembly.
A properly matched system helps reduce installation problems and supports reliable daily operation.
- Overcurrent protection: Automatically cuts off power when the current exceeds the rated limit.
- Low-voltage protection: Uses 41V / 51V / 61V cutoff thresholds to protect the battery from damage caused by excessive discharge.
- Overheating protection: A temperature sensor shuts down the controller when it reaches a critical temperature.
- Short-circuit protection: Responds immediately to short circuits caused by wiring faults.
- Reverse-polarity protection: Protects the controller if the positive and negative power connections are reversed during installation.
Certification and Compliance Information
Contact Avetlink to confirm which certifications and compliance documents apply to the AK controller.
Compatibility Guide
Motor Compatibility
| Motor Type | Compatibility | Notes |
| Brushless DC motor (square wave) | Fully compatible | Default configuration |
| PMSM motor (sine wave) | Compatible with firmware update | Contact factory for PMSM mapping |
| 800W – 1000W rated motors | Fully compatible | Matches controller power range |
| Below 800W | Compatible | Current limit adjustable via firmware |
| Above 1000W | Check with factory | May require 18-tube dual-row variant (45A) |
Vehicle Compatibility
| Vehicle Type | Typical Motor | Load Range | Suitability |
| Cargo tricycle (1.1m bed) | 800W–1000W | 300–500kg | Primary target |
| Cargo tricycle (1.3m bed) | 1000W | 400–600kg | Fully compatible |
| Passenger e-trike | 800W | 2–4 passengers | Fully compatible |
| Heavy cargo tricycle (1.5m) | 1000W+ | 600–800kg | Consider 24-tube variant |
Comparison
18-Tube vs 12-Tube vs 24-Tube — Which Tube Count Fits Your Operation?
| Parameter | 12-Tube | 18-Tube (This Product) | 24-Tube |
| Current Limit | 30A–35A | 40A–45A | 50A–80A |
| Rated Power | 500W | 800W–1000W | 1200W–1800W |
| Heat Dissipation | FR-4 standard | Aluminum substrate (40% better) | Aluminum substrate or dual-row |
| Target Load | Light cargo (<300kg) | Medium-heavy cargo (300–600kg) | Heavy cargo (600kg+) |
| Price Point | Lowest | Mid-range | Premium |
| Fleet ROI | Basic replacement | Best cost-to-reliability ratio | Maximum power |
For cargo tricycles carrying 300–600 kg, an 18-tube controller with an aluminum-substrate circuit board offers a practical balance of cost, cooling, and reliability.
A 12-tube controller may reduce output during sustained heavy-load operation. A 24-tube controller can cost 30–50% more and provide more capacity than standard cargo applications need.
The Avetlink AK 18-tube controller is designed to meet these everyday cargo requirements.
Square-Wave or Dual-Mode Operation
The AK 18-tube aluminum-substrate controller uses square-wave control by default, focusing on strong pulling power for cargo transport.
Firmware-upgradeable versions support two operating modes:
- Square-wave mode: Strong torque for carrying loads.
- PMSM sine-wave mode: Quieter operation with compatible motors.
Supported dual-mode versions use the same hardware platform and one part number, reducing the need to stock separate controllers for each mode.
Why Choose the Avetlink AK Controller?
Better Cooling with an Aluminum-Substrate Board
Conventional FR-4 circuit boards can develop hot spots around the power transistors, known as MOSFETs. Over time, this heat can weaken solder joints and cause board failure.
The AK controller uses an aluminum-substrate, metal-core circuit board to spread heat across the board. This reduces thermal resistance by approximately 40%, helping the controller release heat more effectively during extended operation.
Stable 40A–45A Current Output
Current control affects both protection and vehicle performance. When a controller gets too hot and reduces its output, a loaded tricycle can lose speed.
The AK 18-tube controller is designed to deliver 40A–45A sustained current without thermal throttling under normal operating conditions. This helps cargo tricycles maintain more consistent power and speed while carrying loads.
Choose a Compatible Drive System
For reliable operation, the controller must match the vehicle’s motor, battery, and drivetrain.
Before ordering, confirm:
- Battery voltage and motor power.
- Required current rating.
- Motor type and supported control mode.
- Wiring and connector compatibility.
- Compatibility with the vehicle’s motor and differential assembly.
A properly matched system helps reduce installation problems and supports reliable daily operation.
