1. Introduction
Thank you for choosing the DDC SPORT M1 Folding Electric Bike. This manual provides important information regarding the safe operation, assembly, maintenance, and care of your electric bicycle. Please read this manual thoroughly before your first ride and keep it for future reference. Proper understanding and adherence to these instructions will ensure your safety and the longevity of your e-bike.
2. Safety Information
Riding an electric bike involves inherent risks. To minimize these risks, always observe the following safety precautions:
- Always wear a helmet that meets safety standards.
- Familiarize yourself with local traffic laws and regulations.
- Perform a pre-ride inspection before each use, checking brakes, tire pressure, battery charge, and all quick-release mechanisms.
- Do not ride under the influence of alcohol or drugs.
- Maintain a safe speed and distance from other vehicles and pedestrians.
- Be aware of your surroundings and potential hazards.
- Ensure all components are securely fastened before riding.
- The maximum weight recommendation for this e-bike is 265 pounds (120 kg). Do not exceed this limit.
- This e-bike has passed the UL 2849 test report, ensuring electrical safety standards are met.
3. Package Contents
Upon unpacking, verify that all items are present:
- DDC SPORT M1 Electric Bike (90% assembled)
- 48V 20Ah Removable Battery
- Battery Charger
- User Manual (this document)
- Tool Kit
- Front Carrier
- Phone Holder
- Rearview Mirrors (2)
- Bottle Holder
- Remote Control
4. Product Overview
The DDC SPORT M1 is a folding electric bike designed for commuting and leisure. It features a robust high carbon steel frame and a comprehensive shock absorption system for a comfortable ride.

Figure 4.1: DDC SPORT M1 Folding Electric Bike and its accessories.
Key Features:
- Motor: Peak 750W brushless motor, providing assistance up to 25 MPH.
- Battery: Removable 48V 20Ah Lithium-ion battery, offering an estimated range of 35-55 miles in electric assist mode.
- Suspension: 11-layer shock absorption system, including middle double shocks, hydraulic double shocks, seat bag double spring shocks, and rear seat four shocks for enhanced comfort on varied terrains.
- Brakes: Dual disc brakes for reliable stopping power.
- Tires: 14-inch wheels designed for versatility across different road conditions.
- Lighting: Bright LED headlights and taillights for visibility.
- Folding Design: Compact folding mechanism for easy storage and transport.

Figure 4.2: The 750W peak motor and 14-inch tires.

Figure 4.3: The advanced 11-layer shock absorption system.

Figure 4.4: Bright LED headlights and taillights for improved visibility.
5. Setup and Assembly
Your DDC SPORT M1 electric bike arrives 90% assembled. The remaining assembly steps are straightforward and can be completed using the included tool kit.
Initial Steps:
- Unpacking: Carefully remove the e-bike and all components from the packaging.
- Unfolding: Refer to the "Folding and Unfolding" section for detailed instructions on how to safely unfold the bike.
- Handlebar Adjustment: Adjust the handlebar height and angle to your preferred riding position. Ensure the quick-release lever is securely fastened.
- Seat Adjustment: Adjust the seat post height for comfortable pedaling. Secure the quick-release lever.
- Pedal Installation: Attach the pedals. Note that pedals are typically marked 'L' for left and 'R' for right. The left pedal tightens counter-clockwise, and the right pedal tightens clockwise.
- Accessory Installation: Install the front carrier, phone holder, rearview mirrors, and bottle holder as desired using the provided tools.
- Battery Installation: Ensure the battery is correctly inserted and locked into its compartment.
- Tire Pressure: Check and adjust tire pressure to the recommended PSI (usually found on the tire sidewall).
After assembly, perform a thorough check of all bolts, nuts, and quick-release levers to ensure they are tight and secure.
6. Operating Instructions
The DDC SPORT M1 offers multiple riding modes and features for a versatile experience.
Controls Overview:

Figure 6.1: Handlebar controls and features.
- Power On/Off: Locate the power button on the display or battery. Press and hold to turn the system on or off.
- Pedal Assist System (PAS): The e-bike features a pedelec system. As you pedal, the motor provides assistance. You can typically adjust the level of assistance using buttons on the handlebar display.
- Throttle: For full electric power without pedaling, use the twist grip throttle. Be mindful of local regulations regarding throttle use.
- Gears: The bike has 3 speeds. Use the twist grip shifter to change gears according to terrain and desired effort.
- Braking: The dual disc brakes are activated by the levers on the handlebars. Apply both brakes smoothly for effective stopping.
- Lighting: Activate the LED headlights and taillights for riding in low-light conditions.
- Remote Control: The included remote control may offer features such as locking/unlocking the bike or activating an alarm. Refer to the remote control's specific instructions for details.
7. Battery Information
The DDC SPORT M1 is equipped with a 48V 20Ah removable lithium-ion battery.

Figure 7.1: Removable battery for convenient charging.
Charging:
- To charge the battery, remove it from the bike or plug the charger directly into the charging port on the bike.
- Connect the charger to a standard wall outlet.
- The charging indicator light on the charger will typically show red during charging and turn green when fully charged.
- Charging time is approximately 2 hours for a full charge.
- Do not overcharge the battery. Disconnect the charger once charging is complete.
- Only use the charger provided by DDC SPORT.
Battery Care:
- 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 50-70% capacity and recharge every 1-2 months.
- Avoid fully discharging the battery, as this can reduce its lifespan.
8. Folding and Unfolding
The DDC SPORT M1 is designed for portability with its folding mechanism. The folded size is approximately 35.4 x 21.7 x 27.2 inches.

Figure 8.1: Step-by-step folding process.
Folding Procedure:
- Ensure the bike is powered off.
- Lower the seat post completely.
- Fold the pedals inward (if they are foldable).
- Release the quick-release lever on the handlebar stem and fold the handlebars down.
- Locate the main frame folding latch (usually with a safety catch). Disengage the safety catch and open the latch to fold the frame in half.
- Secure the folded frame with any integrated locking mechanisms.
Unfolding Procedure:
- Release any frame locking mechanisms.
- Carefully unfold the main frame until it locks securely into place. Ensure the safety catch is engaged.
- Raise and lock the handlebar stem into position.
- Unfold the pedals.
- Adjust the seat post to your desired height and secure it.
- Perform a quick safety check before riding.
9. Maintenance
Regular maintenance is crucial for the performance and safety of your e-bike.
- Cleaning: Clean the bike regularly with a damp cloth. Avoid using high-pressure washers directly on electrical components.
- Lubrication: Lubricate the chain and other moving parts periodically with bicycle-specific lubricant.
- Brakes: Check brake pads for wear and replace them when necessary. Ensure brake levers have proper tension and responsiveness.
- Tires: Inspect tires for wear, punctures, and proper inflation before each ride.
- Fasteners: Periodically check all bolts, nuts, and quick-release levers for tightness.
- Electrical Components: Keep all electrical connections dry and free from corrosion. Do not attempt to service the motor or battery pack yourself.
- Professional Service: It is recommended to have your e-bike inspected by a qualified bicycle mechanic at least once a year.
10. Troubleshooting
This section addresses common issues you might encounter with your DDC SPORT M1 e-bike.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on. | Battery not charged, battery not properly seated, power button not pressed correctly. | Charge the battery. Ensure the battery is fully inserted and locked. Press and hold the power button firmly. |
| Motor not assisting. | PAS level set to zero, throttle not engaged, brake levers engaged, loose electrical connection. | Increase PAS level. Ensure throttle is fully twisted. Release brake levers. Check all visible electrical connections. |
| Brakes feel weak. | Worn brake pads, loose brake cable, air in hydraulic system (if applicable). | Inspect and replace brake pads. Adjust brake cable tension. If hydraulic, seek professional service. |
| Unusual noises during ride. | Loose components, chain needs lubrication, worn bearings. | Check all fasteners. Lubricate the chain. If noise persists, consult a professional. |
If you encounter an issue not listed here or cannot resolve a problem, please contact DDC SPORT customer support.
11. Specifications
Detailed technical specifications for the DDC SPORT M1 Folding Electric Bike.

Figure 11.1: DDC SPORT M1 Dimensions and Rider Suitability.
| Feature | Specification |
|---|---|
| Model Name | DDC SPORT M1 |
| Bike Type | Folding Electric Bike, Commuting Ebike, Portable Electric Bicycle |
| Motor | Peak 750W Brushless Motor |
| Max Speed | 25 MPH |
| Battery | 48V 20Ah Lithium-ion (Removable) |
| Estimated Range | 35-55 Miles (Pedal Assist Mode) |
| Charging Time | Approx. 2 Hours |
| Frame Material | High Carbon Steel |
| Wheel Size | 14 Inches |
| Suspension Type | Dual (11-layer shock absorption) |
| Brake Style | Disc Brakes |
| Number of Speeds | 3 |
| Max Weight Recommendation | 265 Pounds (120 kg) |
| Folded Dimensions | 35.4 x 21.7 x 27.2 inches (approx.) |
| Assembly Required | Yes (90% pre-assembled) |
| Certifications | UL 2849 Test Report Passed |
12. Warranty and Support
DDC SPORT is committed to providing quality products and customer service.
Warranty Information:
Your DDC SPORT M1 Folding Electric Bike comes with a 1-year warranty from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims. This warranty does not cover damage due to misuse, accidents, normal wear and tear, or unauthorized modifications.
Customer Support:
For any questions, assistance, or warranty claims, please contact DDC SPORT customer support. We offer 24 months of quality support.
- Email: support@ddcsport.com
- Please provide your model number (M1) and purchase details when contacting support.

Figure 12.1: DDC SPORT Customer Support Information.





