1. Introduction
Thank you for choosing the RCB RK15 Electric Bicycle. This manual provides essential information for the safe assembly, operation, and maintenance of your e-bike. Please read it thoroughly before your first ride to ensure optimal performance and safety.
The RCB RK15 is designed for comfortable commuting and exploration, featuring a powerful 250W motor, a long-range removable battery, 26-inch wear-resistant tires, and a shock-absorbing front suspension for a smooth ride on various terrains.

Image 1.1: The RCB RK15 Electric Bicycle, highlighting its overall design and features.
2. Safety Information
Your safety is paramount. Always wear a helmet and appropriate safety gear when riding. Adhere to local traffic laws and regulations.
- Pre-Ride Check: Before each ride, inspect tires for proper inflation and wear, check brake functionality, ensure all bolts and quick releases are tightened, and verify battery charge level.
- Braking: The RK15 is equipped with mechanical disc brakes on both front and rear wheels for reliable stopping power. Practice braking in a safe area to understand their response.
- Visibility: The e-bike includes LED headlights for night riding. Consider additional reflective gear, especially when riding in low-light conditions.
- Speed: The maximum assisted speed is 25 km/h. Always ride at a speed appropriate for conditions and your skill level.
- Weather Conditions: Exercise caution when riding in wet or slippery conditions, as braking distance may increase.
3. Components Overview
Familiarize yourself with the main components of your RCB RK15 Electric Bicycle:
- Frame: Durable aluminum frame.
- Motor: Powerful 250W brushless geared motor, providing assistance up to 25 km/h.

Image 3.1: Detailed view of the 250W powerful motor.
- Battery: Detachable 36V 12Ah Li-ion battery with BMS for power saving and ultra-long life.

Image 3.2: The large, detachable battery pack.
- Display: LCD Smart Display showing ODO (total mileage), TIME (single boot time), VOL (battery voltage), and TRIP (single mileage).

Image 3.3: The LCD Smart Display on the handlebars.
- Tires: 26-inch wear-resistant and puncture-resistant tires with excellent anti-slip function, suitable for all-terrain.

Image 3.4: The 26-inch wear-resistant tires in action.
- Suspension: High shock absorption front suspension fork for comfortable riding on different road surfaces.

Image 3.5: The front suspension system.
- Gears: 7-speed gear transmission system.
- Brakes: Mechanical disc brakes (front and rear).
4. Setup and Assembly
The RCB RK15 Electric Bicycle comes 85% pre-assembled. The remaining assembly typically involves attaching the front wheel, handlebars, pedals, and seat. A detailed assembly video is available on the product page where you purchased the bicycle, which can guide you through the process step-by-step.
Key Assembly Steps:
- Carefully unpack all components and check against the packing list.
- Attach the front wheel, ensuring it is properly seated and secured.
- Install the handlebars, making sure they are aligned and tightened.
- Attach the pedals (note: left and right pedals are distinct).
- Insert and adjust the seat post to a comfortable riding height.
- Perform a thorough safety check as outlined in Section 2 before your first ride.
5. Operating Instructions
Understanding how to operate your e-bike's features will enhance your riding experience.
5.1 Battery Charging and Management
- The battery is removable for convenient charging. To remove, unlock it with the provided key and slide it out.
- Connect the charger to the battery and then to a power outlet. The charging indicator on the charger will show the charging status.
- A full charge can provide a range of 35 to 90 km, depending on terrain, rider weight, and assistance level.
- Always ensure the battery is securely locked in place before riding.
5.2 Riding Modes
The RK15 offers three riding modes to adapt to different travel needs:
- Cruise Mode: Provides continuous motor assistance without pedaling.
- Pedal Assist Mode: The motor provides assistance as you pedal, with varying levels of support.
- Fixed Speed Cruise Mode: Maintains a set speed without continuous input.
5.3 LCD Smart Display Usage
The LCD display provides real-time information:
- ODO: Total mileage accumulated.
- TIME: Duration of the current ride.
- VOL: Current battery voltage.
- TRIP: Mileage for the current trip (can be reset).
Refer to the display's specific instructions for navigating menus and adjusting settings.
5.4 Gear Shifting
The 7-speed gear system allows you to adjust pedaling effort for different inclines and speeds. Shift gears smoothly by pedaling lightly while operating the shifter. Avoid shifting under heavy load.
6. Maintenance
Regular maintenance ensures the longevity and safe operation of your e-bike.
- Cleaning: Clean your e-bike regularly with a damp cloth. Avoid high-pressure washing directly on electrical components.
- Tires: Maintain recommended tire pressure. Check for punctures or excessive wear regularly.
- Brakes: Inspect brake pads for wear and replace as needed. Ensure brake levers have proper tension and responsiveness.
- Chain: Keep the chain clean and lubricated to ensure smooth gear changes and prevent rust.
- Battery Care: Store the battery in a cool, dry place. If storing for extended periods, charge it to about 50-70% every few months.
- Fasteners: Periodically check all bolts, nuts, and quick releases for tightness.
7. Troubleshooting
This section addresses common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not assisting | Low battery; loose connection; sensor issue | Charge battery; check all cable connections; consult support if issue persists |
| Brakes feel spongy | Cable stretch; worn pads | Adjust cable tension; replace brake pads |
| Gears not shifting smoothly | Dirty chain; misaligned derailleur; stretched cable | Clean and lubricate chain; adjust derailleur; replace cable if necessary |
| Display not turning on | Battery not connected; power button not pressed; display fault | Ensure battery is seated; press and hold power button; contact support |
For issues not listed here or if solutions do not resolve the problem, please contact customer support.
8. Specifications
Detailed specifications for the RCB RK15 Electric Bicycle:
| Feature | Specification |
|---|---|
| Model | RK15 |
| Brand | RCB |
| Bike Type | Electric Bicycle |
| Age Range | Adult |
| Color | Blue |
| Frame Material | Aluminum |
| Wheel Size | 26 Inches |
| Motor Power | 250 Watts |
| Number of Speeds | 7 |
| Brakes | Disc (Mechanical) |
| Suspension Type | Front Fork Suspension (Double Suspension) |
| Battery | 1 x 12V (included) - 36V 12Ah Li-ion |
| Max Speed | 25 km/h |
| Range | 35-90 km (depending on conditions) |
| Product Dimensions (L x W x H) | 183 x 63 x 107 cm |
| Product Weight | 23.3 kg |
| Included Components | Gas cartridge, Charger, Lock |

Image 8.1: Dimensional diagram of the RCB RK15 Electric Bicycle.
9. Warranty and Support
For any questions regarding your RCB RK15 Electric Bicycle, including assembly, operation, or troubleshooting, please do not hesitate to contact our customer support. Refer to your purchase documentation for specific warranty terms and contact information.
We are committed to providing you with a satisfying experience with your RCB e-bike.





