Introduction
Thank you for choosing the RCB G6 Electric Bike. This manual provides essential information for the safe operation, maintenance, and troubleshooting of your new e-bike. Please read it thoroughly before your first ride and keep it for future reference.
The RCB G6 is designed for adults, featuring a powerful 250W motor, a long-lasting 36V 10.4Ah removable battery, and a robust aluminum step-thru frame. It offers a comfortable and efficient riding experience with a top speed of 25 km/h and a range of 30-50 km per charge. Advanced features like an intelligent LCD display, NFC unlocking, and app control enhance your journey.
Safety Information
Always prioritize safety when operating your electric bike. Failure to follow safety guidelines can result in serious injury or damage to the bike.
- Always wear a helmet and appropriate safety gear.
- Obey all local traffic laws and regulations.
- Perform pre-ride checks before each use (brakes, tires, battery, lights).
- Do not ride under the influence of alcohol or drugs.
- Be aware of your surroundings and other road users.
- Avoid riding in extreme weather conditions.
- Do not exceed the maximum load capacity of 120 kg.
Setup and Assembly
Your RCB G6 e-bike arrives approximately 85% pre-assembled. The remaining assembly steps typically include attaching the handlebars, pedals, and potentially the front wheel. Please follow the detailed instructions provided in the included multi-language manual for precise assembly.
Battery Installation and Initial Charge
- Locate the battery compartment within the frame. The 36V 10.4Ah lithium battery is removable for convenient charging.
- Insert the battery securely into its compartment. Ensure it clicks into place.
- Connect the charger to the battery charging port and then to a standard power outlet.
- Allow 5.5 to 6.5 hours for a full charge before your first ride. The charger indicator will change when charging is complete.
Adjustments
- Seat Height: The adjustable seat accommodates riders from 155 cm to 190 cm. Adjust the seat height so your feet can comfortably touch the ground when stopped, and your legs have a slight bend at the knee when pedaling.
- Handlebar Position: Adjust the handlebar angle for a comfortable riding posture.
- Tire Pressure: Check and inflate tires to the recommended pressure (usually indicated on the tire sidewall) before each ride.

Figure 1: The RCB G6 electric bike featuring a step-thru aluminum frame, suitable for riders up to 120KG.
Operating Instructions
Power On/Off and NFC Unlocking
- To power on the bike, press and hold the power button on the intelligent LCD display.
- For quick unlocking, use the NFC function by tapping your NFC-enabled device (e.g., smartphone) near the designated NFC area on the display. This provides one-second unlocking.
- To power off, press and hold the power button again.
Intelligent LCD Display and App Control
The intelligent LCD display provides real-time information:
- Current Speed
- Trip Distance (ODO/DST)
- Remaining Battery Power
- 3-Speed Indicator (Pedal Assist Levels)
- LED Headlight Status
- Error Display
The dedicated smartphone app allows for extended control and customization:
- Locking the bike
- Setting a password
- Adjusting screen timeout
- Switching assist levels
- Activating walk mode

Figure 2: Intelligent LCD display showing speed, battery, and trip data, with NFC one-touch unlocking capability.
Riding and Braking
- Pedal Assist: The 250W brushless geared motor provides assistance as you pedal. Use the controls on the display to switch between 3 assist levels.
- Gears: Utilize the 7-speed Shimano gearbox to adapt to different terrains and inclines. Shift gears smoothly to maintain an efficient pedaling cadence.
- Braking: The bike is equipped with dual disc brakes for reliable stopping power. Apply both front and rear brakes simultaneously for optimal control and safety.
- Headlight: The bright adaptive LED headlight can be activated for night riding or low-light conditions.

Figure 3: Illustration of the 250W brushless geared motor, capable of 25KM/H max speed and handling a 25° slope angle with a 7-speed Shimano gearbox.
Maintenance
Regular maintenance ensures the longevity and safe operation of your RCB G6 electric bike.
Battery Care
- Charge the battery regularly, even if not in use, to maintain its health.
- Avoid fully discharging the battery frequently.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for an extended period, charge the battery to about 50-70% capacity.
Tires and Wheels
- Regularly check tire pressure and inflate to the recommended PSI.
- Inspect tires for wear, cuts, or punctures.
- Ensure wheel spokes are taut and wheels run true.

Figure 4: The RCB G6 features larger 27.5"x2.4" pneumatic tires for a smoother ride and an adjustable seat for rider comfort.
Brakes and Drivetrain
- Inspect brake pads for wear and replace as needed.
- Ensure brake levers are firm and responsive.
- Keep the chain clean and lubricated for smooth shifting and to prevent rust.
- Check gear cables for tension and adjust if shifting becomes imprecise.
General Cleaning and Inspection
- Clean the bike regularly with a damp cloth and mild soap. Avoid high-pressure washing directly on electrical components.
- Inspect the frame for any cracks or damage.
- Check all bolts and fasteners for tightness.
- The front suspension fork provides shock absorption. Ensure it operates smoothly and consider using the lockout function on smooth roads.

Figure 5: The front fork shock absorption system is designed to handle various terrains, including muddy, mountain, snowfield, and sandy beach roads.
Troubleshooting
This section addresses common issues you might encounter with your RCB G6 electric bike. For more complex problems, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery not charged or improperly installed; Loose electrical connection; Power button malfunction. | Ensure battery is fully charged and correctly seated. Check all visible electrical connections. If issue persists, contact support. |
| Motor not assisting | Low battery; Pedal assist level set to zero; Sensor issue; Motor malfunction. | Charge battery. Increase pedal assist level on the display. Check for error codes on the LCD. Contact support if no resolution. |
| Brakes feel weak | Worn brake pads; Loose brake cables; Air in hydraulic system (if applicable). | Inspect and replace worn brake pads. Adjust brake cable tension. For hydraulic brakes, professional service may be required. |
| LCD display shows an error | System fault; Sensor error; Connection issue. | Note the error code displayed. Try restarting the bike. Consult the full user manual or contact support with the error code. |
Specifications
| Feature | Specification |
|---|---|
| Model Number | G6 |
| Brand Name | RCB |
| Motor | 250W Brushless Geared Motor |
| Wattage | 200 - 250W |
| Voltage | 36V |
| Battery | 36V 10.4Ah Removable Lithium Battery |
| Charging Time | 5.5 - 6.5 hours |
| Max Speed | <25 km/h |
| Range per Power | 30 - 50 km |
| Gears | 7-Speed Shimano Gearbox |
| Brakes | Dual Disc Brake |
| Frame Material | Aluminum |
| Wheel Size | 27.5 inches (27.5" x 2.1" non-slip tires) |
| Rated Passenger Capacity | One Seat |
| Max Load | 120 kg |
| Folded | No |
| Certification | CE |
| Origin | Mainland China |

Figure 6: The removable 36V 10.4Ah battery offers a 30-50km range and charges fully in 5.5 hours using high-density battery technology.
User Tips
- The step-thru frame design and available color options make this model particularly convenient and stylish for a wide range of riders.
- Utilize the front suspension's lock function: keep it active for smooth roads to maximize pedaling efficiency, and unlock it for rougher terrains to absorb shocks and enhance comfort.
- Always use the bright adaptive LED headlight when riding at dusk, dawn, or night to ensure visibility and safety.
- Take advantage of the NFC unlocking and smartphone app features for added convenience and security, such as remotely locking your bike or customizing display settings.
Warranty & Support
The RCB G6 electric bike comes with a comprehensive user manual available in 7 languages (English, French, German, Italian, Spanish, Dutch, and Polish) to assist you with assembly and operation.
For any questions regarding repairs, spare parts, assembly assistance, or warranty claims, please do not hesitate to contact the seller directly via email. Please refer to your purchase documentation for specific warranty terms and contact information.





