BAFANG 48V 750W Mid Drive Motor Kit with C18 Display User Manual

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your BAFANG 48V 750W Mid Drive Motor Kit with C18 Display. Please read this manual thoroughly before attempting installation or operation to ensure proper usage and to prevent damage to the product or injury.

2. Product Overview

The BAFANG 48V 750W Mid Drive Motor Kit is designed to convert standard bicycles into electric bikes, offering enhanced power and versatility. It is compatible with various bike types, including mountain bikes, road bikes, and commuter bikes, provided they have a 68mm bottom bracket.

Image: BAFANG 48V 750W Mid Drive Motor highlighting its rated power of 48V 750W, max speed of 25 KM/H, max torque of 160 NM, and weight of 5.6 KG.

Key Features:

• Universal Compatibility: Designed for mountain bikes, road bikes, and commuter bikes with a standard JIS 68mm bottom bracket (34mm diameter).
• Powerful Motor: 48V 750W mid-drive motor with a maximum torque of 160 N.m, providing excellent climbing performance and a top speed of 25km/h.
• Three Driving Modes: Supports pure electric mode, power-assisted mode, and manpower mode to suit various riding preferences and conditions.
• C18 Display: Features a C18 display with 9 levels of pedal assist and automatic backlight for clear visibility and control.
• Waterproof Design: Components are designed to be waterproof for reliable performance in various weather conditions.

3. Package Contents

Please verify that all components listed below are included in your package. If any part is missing, contact customer support immediately.

• Mid-motor (48V 750W)
• C18 Display (with 9 levels pedal assist & automatic backlight)
• Brake Levers
• Thumb Throttle
• Cranks
• Speed Sensor
• 1T4 Cable
• Screws and mounting hardware
• Note: Battery is not included and must be purchased separately.

4. Setup and Installation

4.1. Bottom Bracket Compatibility

Before installation, ensure your bicycle's bottom bracket is compatible with the BAFANG mid-drive motor kit. The kit is designed for a standard JIS 68mm bottom bracket with an inner diameter of 34.5mm.

Image: Diagram illustrating the required 68mm bottom bracket length and 34.5mm inner diameter for motor compatibility.

4.2. Installation Video Guide

Watch the official installation video for a detailed visual guide on setting up your BAFANG Mid Drive Motor Kit.

4.3. Step-by-Step Installation

Follow these steps carefully to install your mid-drive motor kit:

1. Remove Original Accessories: Begin by removing the original cranks, bottom bracket, and any other accessories from your bicycle's bottom bracket area.
2. Install Mid Motor: Carefully insert the BAFANG mid-drive motor into the bottom bracket shell. Ensure it fits securely and is properly aligned.
3. Install Chainring: Attach the chainring to the motor unit using the provided M5 bolts. Securely tighten all bolts.
4. Install Cranks: Once the motor is secured, install the left and right cranks onto the motor's spindle. Tighten the crank bolts firmly.
5. Connect Battery Cable and Install Battery: Connect the motor's battery cable to your e-bike battery. Then, mount the battery securely onto the bike frame, typically using the water bottle cage mounts.
6. Install Brake Levers: Push the new brake levers onto the handlebar and tighten them in a comfortable position. Ensure they are securely fastened and the brake cables are properly connected.
7. Install Speed Sensor: Mount the speed sensor on the rear chainstay, ensuring it is aligned with the magnet on the wheel spoke. Tighten the sensor securely.
8. Connect Headlight (Optional): If your kit includes a headlight, connect its cable to the designated port and install the headlight securely on the front of your bike.
9. Mount Display and Connect Cables: Mount the C18 display onto your handlebar. Connect all necessary cables from the motor, battery, brake levers, throttle, and speed sensor to the 1T4 cable, and then to the display. Ensure all connections are snug and correctly oriented.
10. Turn on Display and Adjust Parameters: Power on the display. Refer to the display's specific manual for initial setup and parameter adjustments, such as wheel size, speed limit, and pedal assist levels.

Image: Detailed wiring diagram illustrating the connections between the motor, battery, display, brake levers, throttle, and speed sensor.

5. Operating Instructions

5.1. Powering On and Off

• To power on the system, press and hold the power button on the C18 display for a few seconds.
• To power off, press and hold the power button again until the display turns off.

5.2. Driving Modes

Your BAFANG mid-drive motor kit offers three distinct riding modes:

• Pure Electric Mode: Engages the motor for propulsion without requiring pedal input. Controlled via the thumb throttle.
• Power-Assisted Mode (Pedal Assist System - PAS): The motor provides assistance based on your pedaling effort. The C18 display allows you to select from 9 levels of assistance.
• Manpower Mode: The motor is disengaged, and the bicycle operates as a traditional pedal-powered bike.

Image: Visual representation of the three available riding modes: Manpower, Power Mode (pedal assist), and Pure Electric Mode.

5.3. C18 Display Functions

The C18 display provides real-time riding data and allows you to adjust various settings. Refer to the specific C18 display manual for detailed instructions on navigating menus and customizing settings.

• Pedal Assist Levels: Adjust the level of motor assistance (1-9) to match your desired effort and terrain.
• Speed Display: View current, average, and maximum speed.
• Battery Level: Monitor the remaining battery charge.
• Trip Information: Access trip distance, total distance, and riding time.
• Automatic Backlight: The display features an automatic backlight for improved visibility in varying light conditions.

6. Maintenance

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

• Clean Regularly: Keep the motor, battery, and display clean from dirt and debris. Use a damp cloth; avoid high-pressure washing directly on electrical components.
• Check Connections: Periodically inspect all electrical connections (motor, battery, display, sensors) to ensure they are secure and free from corrosion.
• Lubricate Chain: Maintain your bicycle chain with appropriate lubricant to ensure smooth operation and prevent wear.
• Inspect Wiring: Check all wiring for any signs of damage, fraying, or loose connections.
• Battery Care: Follow the battery manufacturer's guidelines for charging, storage, and temperature conditions to maximize battery life.

7. Troubleshooting

If you encounter issues with your BAFANG mid-drive motor kit, refer to the following common troubleshooting tips:

• Motor Not Powering On:
  • Ensure the battery is fully charged and properly installed.
  • Check all electrical connections for looseness or damage.
  • Verify the display is correctly connected and powered on.
• No Pedal Assist:
  • Check if the pedal assist level on the display is set above zero.
  • Ensure the speed sensor is correctly installed and aligned with the magnet.
• Error Codes on Display:
  • Consult the C18 display manual for a list of error codes and their corresponding solutions.
  • Often, an error code indicates a loose connection or a sensor issue.
• Unusual Noises from Motor:
  • Inspect the motor for any loose parts or obstructions.
  • Ensure the chainring is securely fastened and the chain is properly aligned.

If troubleshooting steps do not resolve the issue, please contact BAFANG customer support for further assistance.

8. Specifications

Detailed technical specifications for the BAFANG 48V 750W Mid Drive Motor Kit:

Image: Table detailing dimensions and key specifications for different BAFANG motor models, including the 750W version.

9. Warranty and Support

For any missing parts, technical support, or warranty inquiries, please contact BAFANG customer service directly. Ensure you have your purchase details and product model information ready when contacting support.