1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your BAFANG 48V 500W Rear Hub Motor Electric Bike Conversion Kit. This kit is designed to convert a standard bicycle into an electric bicycle, offering enhanced power and assistance for various riding conditions, including commuting, mountain biking, and touring. Please read this manual thoroughly before installation and use to ensure proper function and safety.

Image 1.1: Overview of the BAFANG 48V 500W Rear Hub Motor Electric Bike Conversion Kit components, including the motor wheel, display, controller, brake levers, throttle, and PAS sensor.
2. Setup and Installation
The BAFANG 48V 500W Rear Hub Motor kit is designed for straightforward installation. Ensure you have all components listed in the packing list before beginning. If you encounter any difficulties, refer to the detailed wiring diagram and consider seeking professional assistance.
2.1 Packing List
Verify that all items are present in your kit:
- 500W rear cassette wheel hub motor with rim and spokes (26-inch wheel)
- Controller and controller box
- Optional display (e.g., 500C Display)
- Battery and charger (if ordered together)
- Brake levers
- 1T4 cable
- Thumb throttle
- PAS sensor
- Headlight
- Stickers
- User Manual

Image 2.1: Visual representation of the components included in the BAFANG 48V 500W Rear Hub Motor Electric Bike Conversion Kit, such as the motor wheel, controller, display, and various cables.
2.2 Compatibility Check
Ensure your bicycle meets the following requirements:
- Wheel Size: 26 inches.
- Rear Dropout (OLD): 135-142mm.
- Brake Type: Compatible with both disc brake and V-brake systems.
- Cassette Compatibility: Designed for bikes with up to 9 speeds.

Image 2.2: Diagram illustrating various wheel size options and frame compatibility requirements, including the rear dropout measurement (OLD 135-142mm).
2.3 Wiring Diagram
Follow the wiring diagram carefully to connect all components. Incorrect wiring can damage the system.

Image 2.3: Detailed wiring diagram showing connections for the motor, controller, display, battery, brake levers, throttle, PAS sensor, and headlight.
2.4 Installation Video Guide
For a visual guide on the installation process, please refer to the following video:
Video 2.1: An instructional video demonstrating the assembly and installation of a BAFANG hub motor kit onto a bicycle frame.
3. Operating Instructions
Once installed, your BAFANG electric bike conversion kit provides powerful and efficient assistance. The system typically operates via a display, a thumb throttle, and a Pedal Assist System (PAS).
3.1 Display Functions (e.g., 500C Display)
The display provides essential information and control over your e-bike system. Functions may include:
- Power On/Off: Typically a long press of a button.
- Assist Level Selection: Adjust pedal assist levels (e.g., 1-5) to control motor output. Higher levels provide more assistance.
- Speed Display: Current speed, average speed, maximum speed.
- Battery Indicator: Shows remaining battery charge.
- Trip Information: Distance traveled (trip and total odometer).
- Headlight Control: Turn the integrated headlight on or off.
Note: Specific display features and button layouts may vary depending on the display model (e.g., 500C, DM03, EK01, DPC18).

Image 3.1: Comparison of various BAFANG display models, highlighting their screen size, battery indicator type, holder size, speed limit settings, compatible voltage, light sensation, PAS levels, and USB port availability.
3.2 Pedal Assist System (PAS)
The PAS sensor detects your pedaling motion and provides motor assistance based on the selected assist level. This system allows for a natural riding experience while reducing effort.
3.3 Thumb Throttle
The thumb throttle provides on-demand motor power, allowing you to accelerate without pedaling. The amount of power delivered is proportional to how much the throttle is pressed. Some displays allow setting a maximum speed for each power level when using the throttle.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your BAFANG electric bike conversion kit.
- Battery Care: Charge the battery regularly, even when not in use, to maintain its health. Store in a cool, dry place.
- Motor and Wiring: Periodically inspect all electrical connections for tightness and signs of wear or damage. Keep the motor clean and free of debris.
- General Bicycle Maintenance: Continue to perform regular maintenance on your bicycle's mechanical components, including brakes, chain, tires, and gears.
- Cleaning: Use a damp cloth to clean the display and other components. Avoid high-pressure washing directly on electrical parts.
5. Troubleshooting
If you encounter issues with your BAFANG electric bike conversion kit, refer to the following common troubleshooting steps:
- No Power: Check battery charge, ensure all connections are secure, and verify the display is powered on.
- Motor Not Assisting: Confirm PAS sensor is correctly installed and aligned, check assist level on the display, and ensure brake levers are not engaged (which can cut motor power).
- Display Not Working: Check power connection to the display and battery.
- Unusual Noises: Inspect the motor for any obstructions or loose components.
For persistent issues, contact BAFANG customer support for technical assistance.
6. Specifications
Key specifications for the BAFANG 48V 500W Rear Hub Motor Electric Bike Conversion Kit:
| Feature | Specification |
|---|---|
| Brand | BAFANG |
| Model Name | BAFANG G020 Rear Hub Motor |
| Motor Type | Rear Hub Motor (Cassette Type) |
| Rated Voltage | 48V |
| Rated Power | 500W |
| Max Torque | 65 N.m |
| Wheel Diameter | 26 Inches |
| Installation Widths (OLD) | 135-142mm |
| Gear Shift Compatibility | Fit Cassette Flywheel (up to 9 speeds) |
| Brake Style Compatibility | Disc, V-Brake |
| Efficiency | 80% |
| Frame Material | Aluminum Alloy |
| Special Feature | LCD-Display (optional) |

Image 6.1: Detailed view of the BAFANG G020 Rear Hub Motor, highlighting its specifications and compatibility with cassette type flywheels.
6.1 Battery Specifications (Optional)
If a battery was ordered with the kit, refer to its specific specifications. Common options include:

Image 6.2: Table detailing various battery specifications, including capacity, energy, cell type, BMS, peak current, charger voltage, weight, and USB port availability for Shark and Rear Rack battery types.
7. Warranty
The BAFANG 48V 500W Rear Hub Motor Electric Bike Conversion Kit comes with a limited warranty. Please retain your proof of purchase for any warranty claims. For specific warranty terms and conditions, refer to the documentation provided with your purchase or contact BAFANG customer service.
8. Support
For technical support, installation guidance, or any other inquiries, please contact BAFANG customer service. Our team of professional technicians is available to assist you. Effective communication is key to resolving any concerns efficiently.
You can typically find contact information on the BAFANG official website or through your purchase platform.







