1. Introduction
This manual provides essential information for the safe and efficient use of your Elecharger MC3526 48V AC Motor Controller. Please read this manual thoroughly before installation and operation to ensure proper function and to prevent damage to the unit or associated equipment. Keep this manual for future reference.
2. Product Overview
The Elecharger MC3526 48V AC Motor Controller is designed for electric vehicles, providing precise control over the AC motor. This controller is compatible with various electric vehicle models, including E-CAR, LETIN, LICHI, YOGOMO, DOJO, and HONRI.
Key Features:
- Robust design for electric vehicle applications.
- High compatibility with various EV brands.
- IP66 rated for dust and water resistance.

Figure 2.1: Top view of the Elecharger MC3526 48V AC Motor Controller, showing terminals and branding.

Figure 2.2: An Elecharger MC3527 AC Motor Controller, similar in design to the MC3526 model.

Figure 2.3: A selection of Elecharger AC Motor Controllers, illustrating different models and voltage ratings.
3. Specifications
| Specification | Value |
|---|---|
| Model Number | MC3526 48V |
| Brand | Elecharger |
| Manufacturer | Elechager |
| Ingress Protection (IP) Rating | IP66 |
| Components Included | Controller |
| Assembly Required | Yes |
| UPC | 608275433723 |
4. Setup and Installation
Installation of the MC3526 48V AC Motor Controller requires careful attention to electrical connections and mounting. It is recommended that installation be performed by a qualified technician.
Pre-Installation Steps:
- Ensure the vehicle's power system is completely de-energized before beginning any work.
- Carefully inspect the controller for any signs of physical damage.
- Before replacing an existing controller, take clear photos of your current controller, its connectors, and the motor code. This information is crucial for ensuring compatibility and proper wiring.
Wiring and Connections:
- Connect the main power cables (B+, B-, U, V, W) securely to the designated terminals on the controller. Ensure correct polarity for B+ and B-.
- Connect the signal and control wires from the vehicle's harness to the controller's multi-pin connectors. Refer to the vehicle's specific wiring diagram for accurate connections.
- Ensure all connections are tight and properly insulated to prevent short circuits.

Figure 4.1: Various electrical connectors typically used with the motor controller, highlighting the importance of correct wiring.
Mounting:
- Mount the controller in a location that provides adequate ventilation and protection from excessive heat and vibration.
- Use appropriate fasteners to secure the controller firmly. The recommended torque for M6 bolts is 8-10 N·m.
5. Operating Instructions
Once the Elecharger MC3526 48V AC Motor Controller is correctly installed, follow these general operating guidelines:
- Initial Power-Up: After installation, carefully re-energize the vehicle's power system. Observe for any unusual sounds or indicators.
- System Check: Perform a diagnostic check of the vehicle's electrical system to confirm the controller is communicating correctly with other components.
- Driving: Operate the vehicle normally, paying attention to motor response and any error messages. The controller manages power delivery to the AC motor based on accelerator input and other vehicle parameters.
- Monitoring: Regularly monitor the vehicle's dashboard for any warning lights or performance issues that might indicate a problem with the motor controller or associated systems.
6. Maintenance
The Elecharger MC3526 48V AC Motor Controller is designed for durability and requires minimal maintenance. However, periodic checks can help ensure its longevity and optimal performance.
- Cleaning: Due to its IP66 rating, the controller is protected against dust and powerful water jets. However, avoid using high-pressure washers directly on the unit. Clean the exterior with a damp cloth if necessary.
- Connection Checks: Periodically inspect all electrical connections for tightness and corrosion. Loose connections can lead to overheating or intermittent operation.
- Environmental Conditions: Ensure the controller's mounting location remains free from excessive heat sources or obstructions that could impede airflow around its heat sink.

Figure 6.1: Underside view of the controller, highlighting the heat sink fins crucial for thermal management.
7. Troubleshooting
If you encounter issues with your Elecharger MC3526 48V AC Motor Controller, consider the following basic troubleshooting steps:
- No Power: Check all power connections, including the main battery terminals and fuses. Ensure the vehicle's ignition is on.
- Motor Not Responding: Verify that all signal wires are correctly connected and not damaged. Check the accelerator pedal sensor for proper function.
- Error Codes: If the vehicle's diagnostic system displays an error code, consult the vehicle's service manual for specific interpretations related to the motor controller.
- Overheating: Ensure the controller has adequate ventilation. Check for any obstructions around the heat sink. Reduce heavy load operation if overheating persists.
For complex issues or if troubleshooting steps do not resolve the problem, contact qualified service personnel or Elecharger customer support.
8. Warranty and Support
For information regarding warranty coverage, technical support, or replacement parts for your Elecharger MC3526 48V AC Motor Controller, please refer to the documentation provided at the time of purchase or contact Elecharger customer service directly. When contacting support, please have your model number (MC3526 48V) and UPC (608275433723) readily available.