1. Introducció
This manual provides essential information for the safe and efficient operation of your BAFANG Mid Drive Ebike Motor Kit. This kit is designed to convert standard bicycles into electric bikes, offering enhanced power and extended range. Please read this manual thoroughly before installation and use to ensure proper function and safety.

Figura 1.1: Mésview of BAFANG Mid Drive Ebike Motor Kit components.
Video 1.1: Learn more about the BAFANG BBS motor and its capabilities.
2. Informació de seguretat
Always prioritize safety when installing and operating your ebike kit. Failure to follow safety guidelines can result in injury or damage to the product.
- Ensure all connections are secure and waterproofed before riding, especially in wet conditions.
- Regularly inspect brakes, tires, and all electrical connections.
- Wear appropriate safety gear, including a helmet, at all times.
- Adhere to local regulations regarding ebike power limits and usage.
- Do not attempt to modify the motor or battery system beyond manufacturer specifications.
- Avoid riding in heavy rain or submerging the motor/battery.

Figure 2.1: Important safety reminder: Avoid riding the ebike in heavy rain to prevent damage to electrical components.
3. Què hi ha a la caixa
The BAFANG Mid Drive Ebike Motor Kit typically includes the following components. Please verify all items upon receipt.
- Mid-drive motor (BBSHD or BBS Motor)
- LCD Display (Optional, various models available)
- Brake Lever or Brake Sensor (Optional)
- Chainwheel (Optional, with or without guard)
- Acelerador del polze
- Sensor de velocitat
- Braços de biela
- 1T4 Cable
- Femelles de bloqueig
- Far (opcional)
- Kit d'eines
- Battery (Optional, various types available)

Figure 3.1: Detailed packing list for the BAFANG Mid Drive Ebike Motor Kit.
4. Compatibilitat
This BAFANG mid-drive motor kit is designed for compatibility with most bicycles, provided they meet specific bottom bracket and frame requirements.
4.1. Motor Compatibility
The motor is compatible with standard 68-73MM, 85-105MM, or 105-125MM bottom brackets. Ensure your bike's bottom bracket length falls within these ranges. The inner diameter should be between 33.5-36MM. Also, confirm that the chainwheel will not interfere with your bike's chain stay.

Figure 4.1: Guide to check if the BAFANG motor fits your bicycle's bottom bracket and frame.

Figure 4.2: Illustrations of conditions that are not suitable for BAFANG BBS motor installation, including specific bottom bracket types, belt drive chainrings, and coaster bikes.
4.2. Battery Compatibility (Optional)
If you opt for a battery, ensure your frame can accommodate the chosen battery type (downtube shark battery or rear rack battery). Check for installation screw holes on your rear fork for rack batteries and measure the size of your rear fork (A: 150-160MM).

Figure 4.3: Guide for checking downtube shark battery compatibility with your bike frame.

Figure 4.4: Guide for checking rear rack battery compatibility with your bike's rear fork.
5. Configuració i instal·lació
Installation of the BAFANG Mid Drive Ebike Motor Kit requires basic tools and some technical understanding. Numerous video tutorials are available online (e.g., on YouTube) that can guide you through the process step-by-step. It is highly recommended to consult these resources for visual assistance.
5.1. Passos generals d'instal·lació
- Remove your bike's existing bottom bracket and crankset using appropriate tools.
- Install the BAFANG mid-drive motor into the bottom bracket shell.
- Secure the motor with the provided lock nuts.
- Attach the chainwheel and crank arms.
- Install the speed sensor on the rear wheel.
- Mount the display and throttle on the handlebars.
- Connect all wiring, ensuring secure and waterproof connections.
- Install the battery (if optional battery is purchased) and connect it to the motor system.

Figure 5.1: Diagram illustrating the easy installation process of the BAFANG Mid Drive Ebike Motor Kit.
5.2. Wiring and Waterproofing
The entire ebike kit is designed with waterproof wiring (IP65 rated) to ensure safety and extend service life. Ensure all joints are tightly fitted and effectively waterproofed. Only connect the battery with BAFANG communication protocol support communication if you are using a standard battery.

Figure 5.2: Diagram showing the IP65 waterproof wiring system for the ebike kit.
6. Instruccions de funcionament
The BAFANG Mid Drive Ebike Motor Kit offers versatile riding modes and features for an optimized experience.
6.1. Funcions de visualització
The LCD display provides real-time information and allows for various settings adjustments. Features may include:
- Real Speed display (KM/H or MPH)
- Indicador d'alimentació de la bateria
- Ride Range and Trip distance
- Temps de passeig
- Visualització del codi d'error
- Indicador de fars
- Indicador de fre
- Adjustable speed limits for Pedal Assist and Throttle modes.

Figure 6.1: Features of the smart digital display, including speed, battery, and trip information.
6.2. Modes de conducció
The kit supports multiple riding modes to suit different terrains and preferences:
- Ebike Mode (Rapid Climb): Provides maximum assistance for steep inclines.
- Pedal Assistance Mode (Exercise Mode): Motor assists based on pedaling input, ideal for exercise.
- Push Assistance Mode (Save Effort): Ofereix assistència a baixa velocitat per caminar amb bicicleta.
- Mode bicicleta: No motor assistance, operates as a traditional bicycle.

Figure 6.2: Visual representation of various riding modes available with the BAFANG Mid Drive Motor.
6.3. New Upgraded BBS02B Motor Features
The upgraded BBS02B motor features smooth, controlled starts with throttle-responsive acceleration. Speed limitation settings are available for both Pedal Assist and Throttle modes, preventing sudden power surges.

Figure 6.3: Comparison of new upgraded BBS02B motor features, highlighting slow start function and speed limit application.
7. Manteniment
Regular maintenance ensures the longevity and optimal performance of your BAFANG ebike kit.
- Neteja: Wipe down the motor and battery with a damp drap. Eviteu rentar directament els components elèctrics a alta pressió.
- Connexions: Comproveu periòdicament totes les connexions elèctriques per comprovar si estan ben ajustades i si hi ha signes de corrosió.
- Lubricació: Keep your bike's chain and moving parts lubricated as per standard bicycle maintenance.
- Cura de la bateria: Store the battery in a cool, dry place. Avoid fully discharging the battery frequently. Charge regularly, even when not in use for extended periods.
- Inspecció professional: Consider professional inspection annually or after significant mileage.
8. Solució De Problemes
Aquesta secció tracta els problemes habituals que podeu trobar. Per a problemes més complexos, poseu-vos en contacte amb l'atenció al client.
| Problema | Causa possible | Solució |
|---|---|---|
| El motor no ajuda | Battery low/off, loose connection, sensor issue, error code on display. | Check battery charge and power, inspect all cables, check display for error codes and consult manual/support. |
| La pantalla no s'encén | Loose power cable, battery issue. | Ensure display cable is securely connected, check battery connection and charge. |
| Soroll inusual del motor | Loose components, foreign object, internal motor issue. | Inspect for loose parts or obstructions. If noise persists, contact support. |
9. Especificacions
Detailed technical specifications for the BAFANG Mid Drive Ebike Motor Kit.
| Característica | Detall |
|---|---|
| Pes de l'article | 15.43 lliures |
| Número de model de l'article | bafang bbs02b/HD |
| Fabricant | Bafang |
| Material | Alumini |
| Voltage | 48 Volts |
| Horsepower (750W variant) | 750 watts |
| Max Torque (750W variant) | 120 Nm |
| Max Speed (750W variant) | 50 KM/H |
| Bottom Bracket Length | 68-73MM / 85-105MM / 105-125MM |
| Classificació impermeable | IP65 |
9.1. Motor Power Variants
| Model de motor | Poder | Voltage | Max Torque | Velocitat màxima |
|---|---|---|---|---|
| M315 MM G340.500.C | 500W | 48 V | 100 Nm | 40.5 KM/H |
| M315 MM G340.750.C | 750W | 48 V | 120 Nm | 50 KM/H |
| M615 MM G320.1000.C | 1000W | 48V/52V | 160 Nm | 53 KM/H |

Figure 9.1: Comparison table detailing specifications for BBS Series and BBSHD Series motors.
9.2. Optional Battery Specifications

Figure 9.2: Detailed specifications for various optional battery types, including voltage, capacity, weight, and cycle life.
10. Garantia i Suport
BAFANG offers comprehensive support for its products:
- Devolucions: Política de devolució de 30 dies.
- Servei de reparació: One-year repair service.
- Orientació: Lifetime guidance service for technical assistance.
For any inquiries or support, please contact us via email: ga_sale_service@163.com

Figure 10.1: Our customer support team is available to assist you.

Figure 10.2: Professional repair services are available for your BAFANG ebike kit.





