1. Product Overview
BAFANG is a leading manufacturer of e-mobility components and e-drive systems, developing solutions for electric vehicles since 2003. This BAFANG CAN BBS01B Mid Drive Motor Kit is designed to convert your standard bicycle into a powerful electric bike, suitable for various terrains and riding styles.
Image: Overview of the BAFANG BBS01B Mid Drive Motor Kit components.
2. Key Features
- Universal Compatibility: Designed to fit standard 68-73mm (length) and 34-36mm (internal diameter) bottom brackets on mountain and road bikes.
- Powerful and Reliable Motor: BBS01B 250W motor with a maximum torque of 100-160 N.m, ideal for climbing hills and reaching speeds over 30 KM/H.
- Easy Installation: Comes with an installation video and manual for straightforward setup.
- Multiple Riding Modes: Choose from E-bike, Pedal Assisted Bicycle, and Push Assist Bicycle modes.
- Complete Accessories: Includes motor, brake lever/sensor cables, thumb throttle, chainring, crank, LCD display, speed sensor, 1T4 wire, lock nuts, wrench, and e-bike headlight (default).
Image: BAFANG 2025 CAN Version Motor with labeled connectors and performance specifications.
3. Packing List
The BAFANG Mid Drive Motor Kit includes the following components:
- Bafang Mid-drive motor
- Brake Lever or Brake Sensor (optional, default is brake lever)
- Thumb throttle
- Chainring wheel (optional teeth count)
- Crank arms
- LCD display (optional model)
- Speed sensor
- 1T4 wire harness
- Lock nuts
- Wrench
- E-bike headlight (default)
- Installation Screws
- Plastic Straps
- Crank Removal Tool
- Centre Shaft Removal Tool
- Sticker
- User manual (this document)
Image: Visual representation of the BAFANG Mid Drive Motor Kit packing list.
4. Installation and Compatibility
4.1 Bike Compatibility Check
To ensure the mid-drive motor kit fits your bike, measure your bike's bottom bracket dimensions:
- Length: Must be 68-73mm.
- Internal Diameter: Must be 34-36mm.
Additionally, consider if the chosen chainring size will clear your bike's rear frame. The motor kit includes the 68mm motor, 44T chainwheel, and brake lever by default. If you need to change these, please specify when ordering.
Image: Guide on how to confirm bike compatibility by measuring the bottom bracket and checking chainring clearance. Note: The spacer is not included by default.
4.2 Easy Installation Steps
The kit is designed for easy installation. Refer to the provided installation video and instruction manual for detailed steps. The general process involves mounting the mid-drive motor to the bottom bracket, installing the chainring and crank arms, connecting the display, speed sensor, throttle, and brake components, and finally installing the battery.
Image: Detailed installation diagram showing component connections on a bicycle.
5. Components and Specifications
5.1 Motor Specifications
- Motor Type: Mid Drive
- Wattage: 250W
- Voltage: 36V
- Max Torque: 100-160 N.m
- Max Speed: 25-30 KM/H
- Max Climbing Angle: 35-40°
- Noise Level: 50-55dB
- Weight: 3.8 KG
5.2 Battery Parameters (Optional)
Various battery options are available, including Downtube and Rear Rack batteries. Key parameters are listed below:
| Type | 36V 13Ah Shark Battery | 36V 17.4Ah Shark Battery | 36V 24Ah Shark Battery | 36V 22.5Ah Rear Rack |
|---|---|---|---|---|
| Watt Hour | 468Wh | 626.4Wh | 864Wh | 810Wh |
| Battery Cell | 18650-2600mAh | 18650-2900mAh | LG 21700 4500mAh | 18650 2600mAh |
| BMS | 30A | 30A | 30A | 30A |
| Charge Voltage | 42V | 42V | 42V | 42V |
| Size (L*W*H) | 368*90*89.5mm | 368*90*111mm | 367*90*127mm | 476*165*58mm |
| Weight | 3kg | 3.85kg | 4.8kg | 5.9kg |
| Battery Holder | 6 Pin | 6 Pin | 6 Pin | 6 Pin |
| USB Port | Yes | Yes | Yes | Yes |
| Cycle Life | 1000 times | 1000 times | 1000 times | 1000 times |
| Protection Function | Over charge, Over discharge, Over current, Short circuit, Balance | |||
Image: Detailed specifications and dimensions for various battery options.
Image: Multiple battery case options for different bike frames.
Image: Rear rack battery with dimensions.
5.3 Display Options
The kit supports various display models, each with different features. Choose the display that best suits your needs:
| Model | Mounting Size | Screen Size | PAS Level | Advanced Password | USB Function | Bluetooth | Brake Warning | Backlight Setting |
|---|---|---|---|---|---|---|---|---|
| DZ40 | 22.2mm | 1.7inch | 5 | / | X | / | X | / |
| 500C | 22.2mm | 2.2inch | 3,5,9 | 1919 | X | / | √ | 1-5 |
| EKD01 | 22.2/25.4mm | 2.4inch | 3,5,9 | 2020 | √ (Type-C port) | √ | √ | 30%/50%/75%/100% |
| SW2-M58 | 22.2/25.4/31.8mm | 3.8inch | 3,5,9 | 1919 | X | / | √ | 1-5 |
| DPC18 | 22.2/25.4/31.8mm | 3.5inch | 3,5,9 | 1919 | √ | X | √ | 1-5 |
Image: Specifications for various e-bike display models.
Image: Color screen LCD display features and interface details.
5.4 Chainring Options
The choice of chainring affects your riding experience. Smaller chainrings (e.g., 36T) are better for climbing, while larger ones (e.g., 52T) are for higher speeds. With an e-bike motor, the motor provides ample power, so the chainring size primarily influences top speed. The chainring is compatible with bikes with ≤11 speeds. If unsure, consider using the same teeth count as your original chainring.
| Chainring Teeth | Offset | Recommended Rear Sprockets |
|---|---|---|
| 36T (Without Cover) | No Offset | ≤9 Speed |
| 42T (Without Cover) | 16.5mm (0.64") | ≤11 Speed |
| 44T (With Cover) | 6.5mm (0.25") | ≤9 Speed |
| 52T (With Cover) | 6.5mm (0.25") | ≤9 Speed |
Image: Chainring options and specifications.
5.5 Brake System Options
The kit comes with brake levers that have a power cutting-off function by default. If you prefer to retain your existing hydraulic or mechanical brakes, you can request brake sensors instead of brake levers. Please inform the seller with your order ID or contact them via email for this change.
- BAFANG Electric Bicycle Brake Lever: Specifically designed for electric bicycles, suitable for BBS01, BBS02, BBSHD. Stops the motor when engaged, improving safety.
- Electric Bicycle Brake Sensor: Durable, waterproof, sealed connectors. Compatible with BBS01B, BBS02B, BBS-HD. Works with hydraulic and mechanical brakes. Cable Length: 55cm, Item Weight: 0.05kg.
Image: BAFANG Electric Bicycle Brake Lever.
Image: Electric Bicycle Brake Sensor.
6. Operation
Once installed, your e-bike conversion kit offers versatile riding. The display provides real-time information and allows you to adjust settings.
Video: Demonstrates the BAFANG BBS02B 48V750W motor, T1 Touch display features (real speed, battery power, ride time, error code, ride range, headlight indicator, brake indicator), and riding in various terrains (city, off-road, hilly, snow, jumps). It highlights the motor's reliability, power transfer, versatility, and ability to withstand weather conditions.
6.1 Riding Modes
- E-bike Mode: Full electric power, no pedaling required.
- Pedal Assisted Bicycle Mode (PAS): The motor provides assistance as you pedal. You can adjust the assistance level (e.g., 0-9 PAS levels depending on display model) to control speed and power output.
- Push Assist Bicycle Mode: Provides low-speed assistance for walking the bike.
6.2 Display Functions
The intelligent T1 Touch display (and other models) allows you to adjust various parameters and settings to fit your specific riding preferences. Common display functions include:
- Real-time Speed (KM/H or MPH)
- Battery Power/Percentage
- Trip Distance and Odometer (ODO)
- Ride Time
- Error Codes (e.g., "22" for specific issues)
- Ride Range
- Headlight Indicator
- Brake Indicator
- PAS Level Adjustment (3/5/9 levels)
- USB Port (Type-C on EKD01) for charging devices
- Bluetooth Function (on EKD01)
- Brightness Setting (30-100%)
- Navigation Function
7. Maintenance
Regular maintenance is crucial for the longevity and optimal performance of your e-bike conversion kit. While specific maintenance instructions for the motor are minimal due to its sealed design, general e-bike maintenance practices apply:
- Keep the motor and battery clean and free from dirt and debris.
- Regularly check all electrical connections for tightness and corrosion.
- Inspect cables for any signs of wear or damage.
- Ensure the chain is clean, lubricated, and properly tensioned.
- Check brake components (levers/sensors, pads) for proper function and wear.
- Store the battery in a cool, dry place and follow charging guidelines to prolong its lifespan.
- Avoid submerging the motor or battery in water.
8. Troubleshooting
If you encounter issues with your BAFANG mid-drive motor kit, refer to the display for error codes, which can help diagnose the problem. For example, an "Error Code 22" might indicate a specific issue. Common troubleshooting steps include:
- No Power: Check battery connection, ensure battery is charged, and verify all cables are securely connected.
- Motor Not Assisting: Check PAS level on display, ensure speed sensor is correctly installed and functioning, and verify brake levers/sensors are not engaged.
- Display Not Working: Check power connection to the display and ensure no cables are pinched or damaged.
- Unusual Noises: Inspect the motor area for loose components or obstructions.
For persistent issues or complex problems, contact the local service center for technical support.
9. Warranty and Support
The product comes with a warranty for quality problems within one year of purchase. A local service center is available in UK/EU to provide technical support and maintenance.
- Warranty Period: 1 year for quality problems.
- Support: Local service center available in UK/EU for technical support and maintenance.
- Contact: For service, provide your order ID or contact the seller via email.
