BAFANG BBS02B 48V 750W Mid Drive Kit User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your BAFANG BBS02B 48V 750W Mid Drive Kit. This kit is designed to convert standard bicycles, including fat tire and snow bikes with a 100MM bottom bracket, into powerful electric bicycles. The upgraded CAN protocol motor ensures enhanced stability and a smoother riding experience. Please read this manual thoroughly before installation and use to ensure safe and optimal performance.

For additional support and resources, you may refer to the official user guide PDF: User Guide (PDF).

2. Safety Information

Always prioritize safety when installing and operating your e-bike kit. Failure to follow these safety guidelines may result in injury or damage to the product.

• Ensure all connections are secure and properly insulated before operating the e-bike.
• Wear appropriate safety gear, including a helmet, when riding.
• Do not attempt to modify the motor or battery system beyond the instructions provided.
• Keep the battery and electrical components dry. Avoid riding in heavy rain or submerging the components in water.
• Regularly inspect your e-bike for any signs of wear, damage, or loose connections.
• Adhere to local traffic laws and regulations regarding e-bike usage.

3. Packing List

Upon opening the package, please verify that all components listed below are present and undamaged. The kit includes essential accessories for conversion, with battery and charger being optional components.

• Mid-drive motor BBS02B 48V 750W
• Brake lever or brake sensor
• Thumb throttle
• Chainring wheel
• Crank arms
• LCD display
• Battery and charger (optional)
• Speed sensor and magnets
• 1T4 wire harness
• Locknut
• E-bike tool
• Headlight
• Stickers
• Power extension cable
• Long bolt and gasket for BB100mm

Figure 3.1: Visual representation of the BAFANG BBS02B Mid Drive Kit packing list.

Figure 3.2: Main components of the BAFANG BBS02B Mid Drive Kit.

4. Setup and Installation

4.1 Bottom Bracket Compatibility

The BAFANG BBS02B 750W Mid Drive Motor Kit is compatible with bicycles featuring a 100MM bottom bracket. Please measure your bike's bottom bracket width to ensure compatibility. If your bottom bracket size is between 80-105mm, an extra washer may be required. If your inner diameter is 34-36mm, a bottom adapter might be needed.

Figure 4.1: Bottom bracket measurement and chainring options.

4.2 Motor Specifications

The BBS02B motor operates at 48V with a rated power of 750W. It provides a maximum torque of 100-120 N.m, enabling strong climbing capabilities (30-35° max climbing angle). The motor operates quietly with a noise grade of 50-55dB and is IP65 water-resistant. The total weight of the motor is approximately 4.3KG.

Figure 4.2: BAFANG BBS02B Motor Specifications.

4.3 Wiring Diagram

Proper wiring is crucial for the functionality and safety of your e-bike kit. Refer to the diagram below for correct connections. Note that only batteries with BAFANG communication protocol support communication with the display. If your battery does not support this, it can still be compatible with standard setups.

Figure 4.3: BAFANG Mid Drive Kit Wiring Diagram.

4.4 Battery Installation (Optional)

If your kit includes a battery, ensure it is securely mounted to your bike frame. Various battery types are compatible, offering different capacities and form factors. Always use the provided charger for optimal battery life and safety.

Figure 4.4: Battery Specification Comparison.

5. Operating Instructions

5.1 BAFANG High-Tech Display

The BAFANG e-bike display provides essential riding information and allows for customization. You can choose from three themes, track metrics like ride time, calories burned, and cadence. Phone navigation can be mirrored on the display for convenience. Motor settings can be customized via an app, eliminating the need for USB cables.

Figure 5.1: BAFANG Display Models Comparison.

5.2 Riding Modes

The BAFANG kit offers three primary riding modes:

• E-bike Mode (Throttle Only): Provides full electric power without pedaling. Ideal for effortless travel.
• Pedal Assisted Bicycle Mode (PAS): The motor provides assistance as you pedal. You can adjust the level of assistance (0-9 PAS levels) to suit your preference and terrain.
• Push Assisted Bicycle Mode: Provides low-speed assistance for walking the bike, useful when pushing it uphill or through difficult terrain.

The motor's smooth, controlled starts and adjustable speed limits enhance both Pedal Assist and Throttle modes, providing a tailored riding experience.

Figure 5.2: BAFANG Mid Drive Kit Riding Modes.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your BAFANG mid-drive kit.

• Cleaning: Keep the motor, battery, and display clean. Use a damp cloth to wipe down components. Avoid high-pressure washing directly on electrical parts.
• Connections: Periodically check all electrical connections for tightness and corrosion. Ensure the battery is securely seated.
• Lubrication: Keep your bike's chain and other moving parts lubricated as per standard bicycle maintenance.
• Battery Care: Store the battery in a cool, dry place. If storing for extended periods, charge it to 50-70% capacity and recharge every 2-3 months.
• Professional Inspection: Consider having your e-bike inspected by a qualified technician annually, especially if you ride frequently or in challenging conditions.

7. Troubleshooting

This section addresses common issues you might encounter with your BAFANG mid-drive kit.

If you encounter persistent issues not covered here, please contact BAFANG customer support.

8. Specifications

9. Warranty and Support

The BAFANG BBS02B Mid Drive Kit typically comes with a one-year warranty from the date of purchase, covering quality-related issues. Please retain your proof of purchase for warranty claims.

For technical assistance, troubleshooting, or warranty inquiries, please contact the seller or BAFANG customer support. You can often find contact information on the seller's Amazon store page or through the official BAFANG website.

For general inquiries, you may also email: ga_sale_service@163.com.

Figure 9.1: UL Certificate of Compliance for BAFANG Batteries.