BAFANG 48V 500W/750W Rear Hub Motor Kit User Manual

Product Overview

The BAFANG 48V 500W/750W Rear Hub Motor Kit is designed to convert standard bicycles into electric bikes, offering enhanced performance and versatility. This kit provides powerful assistance for various riding conditions, from mountain trails to city commutes. It features a robust brushless gear motor, compatible with multiple wheel sizes, and includes essential components for a complete conversion.

Key Features:

• Powerful Performance: 48V 500W/750W motor with 65/80N.m max torque and top speeds of 40/45KM/H.
• Quiet Operation: Noise grade less than 55 dB.
• Durable Design: Waterproof (IPX5) and efficient (≥80%).
• Universal Compatibility: Fits bikes with 135-142mm rear dropouts, supporting disc and V-brakes.
• Intelligent PAS System: Offers 4 riding modes for reduced fatigue.

Package Contents

Verify that all components listed below are included in your package:

• BAFANG 48V 500W/750W Rear Hub Motor with Rim & Spokes
• LCD Display (Optional)
• Battery (Optional)
• Controller
• Controller Box
• Brake Levers / Brake Sensors (Note: If using original hydraulic brakes or integrated shifter/brake levers, brake sensors are required. Contact support if needed.)
• Thumb Throttle
• Left PAS Sensor & Right Big PAS Sensor
• Motor Extension Cable
• 1T4 Cable
• Headlight

Compatibility and Specifications

Ensure your bicycle meets the following compatibility requirements for optimal performance and safe installation.

• Rear Dropout (OLD): Your bike's rear dropout should be 135-142mm.
• Brake System: Compatible with both disc brakes and V-brakes.
• Gear Shift: Designed for cassette wheels (not freewheel).

Wheel Diameter Information

General Specifications

• Rated Voltage: 48V
• Rated Power: 500W/750W
• Max Torque: 65 N.m (500W) / 80 N.m (750W)
• Position: Rear Cassette Wheel
• Construction: Brushless Gear Motor
• Efficiency: ≥80%
• Noise Grade: ＜55 dB
• Operating Temperature: -20-45 ℃
• Model Number: US JJ G020 Rear Hub 500W/750W DZ

Setup and Installation

This section provides a general guide for installing your BAFANG Rear Hub Motor Kit. For detailed, step-by-step instructions, refer to the included installation manual or online video tutorials provided by BAFANG.

1. Prepare Your Bike: Ensure your bike's rear dropout is within the 135-142mm range. Remove the existing rear wheel.
2. Install the Hub Motor: Mount the BAFANG rear hub motor wheel into your bike's rear dropouts. Secure it properly.
3. Mount the Controller and Controller Box: Find a suitable location on your bike frame for the controller and its protective box. Secure them firmly.
4. Install PAS Sensors: Attach the Left PAS Sensor and Right Big PAS Sensor to your bike's bottom bracket area. Ensure they are correctly aligned with the crank arm.
5. Install Thumb Throttle and Brake Levers/Sensors: Mount the thumb throttle on the handlebar. Replace your existing brake levers with the provided ones, or install brake sensors if retaining your original hydraulic brakes.
6. Install Display (Optional): Mount your chosen LCD display on the handlebar.
7. Connect Wiring: Follow the wiring diagram (Figure 4) to connect all components using the provided cables, including the motor extension cable and 1T4 cable. Ensure all connections are secure and waterproof.
8. Install Headlight: Mount the headlight and connect it to the system.
9. Install Battery (Optional): If you have purchased a battery, mount it securely on your bike frame and connect it to the controller.
10. Final Checks: Double-check all connections, ensure cables are neatly routed and secured, and verify that all components are firmly mounted.

For visual assistance, please refer to the official installation video:

Operating Instructions

Once installed, operating your BAFANG e-bike conversion kit is straightforward. Familiarize yourself with the display and control functions.

Display Options and Functions

The kit supports various display options, allowing you to monitor key riding data:

• Speed Monitoring: View current speed, average speed, and max speed.
• Battery Level: Monitor remaining battery charge. Note: Some displays (e.g., EKD01) may not refresh battery percentage while riding and might require a power cycle for an accurate reading.
• PAS Level: Adjust the level of pedal assist (typically 0-4 or 0-9 levels).
• Trip Distance: Track distance covered per ride.
• Odometer: Total distance covered.
• Headlight Control: Turn the headlight on/off directly from the display.
• Error Codes: Displays error codes for troubleshooting.

Riding Modes

• Pedal Assist System (PAS): The motor provides assistance as you pedal. The level of assistance can be adjusted via the display. Higher PAS levels provide more power and less effort from the rider.
• Thumb Throttle: Provides power on demand, allowing you to accelerate without pedaling. Use with caution, especially at higher speeds.

Battery Information (Optional)

If you have opted for a BAFANG battery with your kit, please refer to the following specifications and guidelines for optimal performance and longevity.

General Battery Care:

• Always use the charger provided with your battery.
• Do not expose the battery to extreme temperatures (hot or cold).
• Store the battery in a cool, dry place when not in use, ideally with a partial charge (50-70%).
• Avoid fully discharging the battery frequently, as this can reduce its lifespan.
• The battery includes protection functions against overcharge, over discharge, over current, short circuit, and balance.

Maintenance

Regular maintenance ensures the longevity and safe operation of your BAFANG e-bike kit.

• Cleanliness: Keep the motor, controller, and battery free from dirt and debris. Use a damp cloth for cleaning; avoid high-pressure washing directly on electrical components.
• Connections: Periodically check all electrical connections for tightness and signs of corrosion. Ensure waterproof connectors are properly sealed.
• Cables: Inspect cables for any signs of wear, fraying, or damage. Replace damaged cables immediately.
• Motor: The brushless gear motor is largely maintenance-free. Avoid disassembling the motor unless you are a qualified technician.
• Brakes: Ensure your bike's brakes are in good working order, as the added speed and weight of an e-bike require effective braking.
• Tires: Maintain proper tire pressure for efficiency and safety.

Troubleshooting

This section addresses common issues you might encounter. For more complex problems, contact BAFANG customer support.

Warranty and Support

BAFANG is committed to providing reliable products and excellent customer service.

• Warranty: The product comes with a 30-day return policy and a 365-day repair or replace warranty.
• Customer Support: US-based experts are available 24/7 for assistance.
• Contacting Support: For troubleshooting or any inquiries, easily contact us via your Amazon order: Account & Lists → Orders → Get help with order.