Introduction
Welcome to the ENGWE C20 Pro Folding Electric Bicycle user manual. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new electric bicycle. Please read this manual thoroughly before your first ride to ensure proper assembly, operation, and to maximize your riding experience.
Image: The ENGWE C20 Pro folding electric bicycle, showcasing its compact design and robust tires.
Safety Information
Your safety is paramount. Always adhere to the following safety guidelines:
- Always wear a helmet that meets safety standards.
- Familiarize yourself with local traffic laws and regulations regarding electric bicycles.
- Perform a pre-ride inspection before each use, checking brakes, tires, and battery level.
- Do not ride under the influence of alcohol or drugs.
- Be aware of your surroundings and ride defensively.
- Avoid riding in adverse weather conditions or on slippery surfaces.
- Ensure the folding mechanism is securely locked before riding.
- Do not exceed the maximum load capacity of 120 kg (265 lbs).
Components Overview
The ENGWE C20 Pro is designed with high-quality components for a reliable and comfortable ride.
- Frame: Lightweight 6061 aluminum alloy, foldable design.
- Motor: 250W brushless motor, providing reliable assistance up to 25 km/h.
- Battery: Removable 36V 15.6Ah lithium battery, offering a range of 40-120 km.
- Tires: 20 x 3.0 inch wide, puncture-resistant tires for stability and grip.
- Suspension: Front suspension fork for a comfortable ride on uneven surfaces.
- Brakes: Mechanical disc brakes on front and rear for effective stopping power.
- Gears: 7-speed transmission system.
- Display: Intelligent LCD display showing real-time information (power, speed, mileage).
Image: An infographic detailing key specifications of the ENGWE C20 Pro, including battery capacity, motor power, and tire size.
Image: A detailed diagram illustrating the internal components of the 250W brushless motor, highlighting its efficient design.
Setup
1. Unboxing and Initial Inspection
Your ENGWE C20 Pro arrives 85% pre-assembled. Carefully remove the bicycle and all packaging materials from the box. Inspect for any visible damage during transit. Retain the packaging for future transport or storage.
2. Assembly Instructions
The remaining assembly typically involves attaching the front wheel, handlebars, pedals, and seat post.
- Handlebar Installation: Insert the handlebar stem into the fork tube and tighten the quick-release lever or bolts securely. Ensure the handlebars are aligned with the front wheel.
- Pedal Installation: Identify the left (L) and right (R) pedals. The left pedal tightens counter-clockwise, and the right pedal tightens clockwise. Apply a small amount of grease to the threads before installation.
- Seat Post Adjustment: Insert the seat post into the frame and adjust the height to a comfortable riding position. Secure with the quick-release lever.
- Front Wheel (if detached): Attach the front wheel to the fork, ensuring the disc brake rotor is correctly seated in the caliper. Secure with the quick-release skewer.
3. Battery Installation and Charging
The 36V 15.6Ah lithium battery is removable for convenient charging.
- Installation: Slide the battery into its compartment on the frame until it clicks securely into place. Use the key to lock it if applicable.
- Charging: Connect the charger to the battery charging port and then to a standard power outlet. The charging indicator on the charger will show the charging status. A full charge typically takes 6 hours.
- First Charge: For the first use, fully charge the battery before riding.
Image: A visual representation of the 15.6Ah lithium-ion battery, emphasizing its capacity and extended range compared to smaller batteries.
Operating Instructions
1. Powering On/Off
To power on the bicycle, press and hold the power button on the LCD display. To power off, press and hold the same button.
2. Understanding the LCD Display
The intelligent LCD display provides crucial riding data:
- Speed: Current riding speed.
- Battery Level: Indicates remaining battery charge.
- Mileage: Displays trip distance and total odometer.
- Power Assist Level: Shows the current level of motor assistance (usually 0-5).
- Error Codes: In case of a malfunction, an error code will be displayed. Refer to the troubleshooting section.
You can also adjust a constant speed (cruise control) when riding on flat terrain via the display settings.
3. Pedal Assist System (PAS) and Throttle
- PAS: The motor provides assistance as you pedal. Adjust the assist level using the '+' and '-' buttons on the display. Higher levels provide more assistance.
- Throttle (if equipped): Some models may include a thumb throttle for power on demand without pedaling. Use responsibly and be aware of local regulations.
4. Gear Shifting
The 7-speed transmission allows you to select the appropriate gear for different terrains and speeds. Shift gears smoothly by pedaling lightly while operating the shifter.
5. Braking
The ENGWE C20 Pro is equipped with mechanical disc brakes. Apply both front and rear brakes simultaneously for effective and controlled stopping. Avoid sudden, hard braking, especially with the front brake, to prevent skidding.
6. Folding Mechanism
The bicycle features a convenient folding design for easy storage and transport.
- Step 1: Lower the seat post and handlebars.
- Step 2: Open the frame folding latch, typically located in the middle of the main frame tube. Carefully fold the frame in half.
- Step 3: Fold the pedals inward if they are foldable.
- Step 4: Secure the folded bike with any integrated straps or magnets.
When folded, the dimensions are approximately 100*54*78 cm (39.4*21.3*30.7 inches), making it easy to store in a car trunk or small space.
Image: Two individuals demonstrating the ease of transporting the folded ENGWE C20 Pro by placing it into the rear of an SUV.
Image: Several people with their folded ENGWE C20 Pro bikes waiting at a train station, illustrating its portability for public transport.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your ENGWE C20 Pro.
- Battery Care:
- Charge the battery regularly, even if not in use, to maintain its health.
- Avoid fully discharging the battery.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- Tire Pressure: Check tire pressure before each ride. Maintain the recommended PSI (pounds per square inch) as indicated on the tire sidewall for optimal performance and puncture resistance.
- Brake Inspection: Regularly check brake pads for wear and ensure brake levers provide firm and responsive stopping power. Adjust or replace as needed.
- Chain Lubrication: Keep the chain clean and lubricated to ensure smooth gear changes and prevent rust.
- General Cleaning: Clean the bicycle regularly with a damp cloth. Avoid using high-pressure washers directly on electrical components.
- Fastener Check: Periodically check all bolts and fasteners for tightness, especially on critical components like handlebars, wheels, and folding mechanisms.
Troubleshooting
This section addresses common issues you might encounter. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery not charged or not properly installed; loose electrical connection. | Ensure battery is fully charged and securely seated. Check all visible cable connections. |
| Motor not assisting | PAS level set to 0; brake levers engaged; motor or controller issue. | Increase PAS level on display. Ensure brake levers are fully released. Check display for error codes. |
| Brakes feel weak | Worn brake pads; loose brake cable; disc rotor contamination. | Inspect brake pads for wear and replace if necessary. Adjust brake cable tension. Clean disc rotors with disc brake cleaner. |
| Gears not shifting smoothly | Dirty or unlubricated chain; misaligned derailleur. | Clean and lubricate the chain. If issue persists, a professional adjustment may be needed. |
| LCD display shows error code | Specific component malfunction (e.g., motor, controller, sensor). | Note the error code and consult the manufacturer's specific error code list or contact customer support. |
Specifications
Detailed technical specifications for the ENGWE C20 Pro Folding Electric Bicycle:
| Feature | Specification |
|---|---|
| Model Name | C20 Pro |
| Motor Power | 250W Brushless Motor |
| Max Speed | 25 km/h (15.5 mph) |
| Battery | 36V 15.6Ah Removable Lithium Battery |
| Range | 40-120 km (25-75 miles) per charge |
| Charge Time | Approximately 6 hours |
| Wheel Size | 20 Inches (20 x 3.0 inch wide tires) |
| Frame Material | 6061 Aluminum Alloy |
| Suspension Type | Front Suspension |
| Brake Style | Mechanical Disc Brakes (Front & Rear) |
| Gears | 7-Speed Transmission |
| Folded Dimensions | 100 x 54 x 78 cm (39.4 x 21.3 x 30.7 inches) |
| Product Weight | 24.8 kg (54.7 lbs) |
| Max Load Capacity | 120 kg (265 lbs) |
| Specific Uses | City, Off-road, Road, Trail |
Warranty and Support
ENGWE provides reliable customer service and a comprehensive warranty for your C20 Pro electric bicycle.
- Warranty: A one-year warranty is provided for the motor, battery, and controller. Please retain your proof of purchase for warranty claims.
- Customer Support: Our customer service team is available 24/7 to assist with any questions or concerns you may have.
- Contact: Refer to the contact information provided with your purchase or visit the official ENGWE website for support details.
