1. Introduction
Thank you for choosing the ONESPORT OT05 Pro Electric Bicycle. This manual provides essential information for the safe assembly, operation, and maintenance of your e-bike. Please read this manual thoroughly before your first ride and keep it for future reference. Proper assembly and understanding of the features will ensure a safe and enjoyable riding experience.
La sécurité avant tout : portez toujours un casque et un équipement de sécurité approprié lorsque vous conduisez. Familiarisez-vous avec le code de la route local.
2. Produit terminéview
The ONESPORT OT05 Pro is a 27.5-inch electric mountain bike designed for adults, featuring a powerful 250W motor, a long-lasting 36V 22.5Ah lithium battery, and responsive hydraulic disc brakes. It is equipped with a torque sensor for intuitive pedal assistance and a 7-speed transmission for versatile riding.

Image: The ONESPORT OT05 Pro electric bicycle highlighting its 250W motor, 25 KM/H max speed, 40 Nm torque, 30° max slope, and 7-speed gear system.
3. Instructions de montage
Your ONESPORT OT05 Pro electric bicycle comes partially assembled. Please follow these steps carefully to complete the assembly. A 16-in-1 installation tool is included in the box.
3.1. Déballage et vérification des composants
Retirez soigneusement tous les composants de l'emballage. Vérifiez que toutes les pièces sont présentes :
- Electric Bicycle Frame (partially assembled)
- Guidon
- Roue avant
- Pédales (gauche et droite)
- Phare
- Garde-boue avant
- Protecteur de dérailleur arrière
- Selle et tige de selle
- Chargeur
- Manuel d'instructions
- 16-in-1 Installation Tool
- Pompe
- Sac pour téléphone portable
- Quick Release Axle (for front wheel)
3.2. Installation du guidon
- Rotate the stem to the proper direction and loosen the screws on the stem clamp.
- Place the handlebar onto the stem.
- Lock the stem clamp by tightening the screws evenly.
- Cover the screw cap.
3.3. Handlebar Height Adjustment
- Loosen the side screw on the stem.
- Rotate the handlebar to the desired height.
- Tighten the side screw to secure the handlebar.
3.4. Installation des phares
- Loosen the screw on the fork arch.
- Slide the screw through the headlight bracket and fork arch.
- Tighten the screw to secure the headlight.
- Connect the headlight cable.
3.5. Front Mudguard Installation
- Loosen the screw on the fork lowers.
- Attach the lower supports of the mudguard to the fork lowers.
- Tighten the screws to secure the mudguard.
3.6. Installation de la roue avant
- Retournez le vélo.
- Remove the temporary protector and brake pad spacer from the brake caliper.
- Remove the wheel hub protector and nut.
- Insert the wheel between the fork blades so that the axle can seat firmly at the fork dropouts.
- Faites glisser le ressort dans le moyeu et serrez l'écrou pour fixer le blocage rapide.
- Ensure the quick release lever is securely closed.
3.7. Installation de la pédale
Note: The left pedal is marked 'L' and the right pedal is marked 'R'. They thread in opposite directions.
- Insert the right pedal (R) into the right crank arm and tighten it clockwise.
- Insert the left pedal (L) into the left crank arm and tighten it counter-clockwise.
3.8. Rear Derailleur Protector Installation
- Loosen the nut on the rear axle.
- Install the rear derailleur protector over the axle.
- Tighten the nut to secure the protector.
3.9. Installation du siège
- Insert the seatpost into the frame's seat tube.
- Adjust the seat to a suitable height, ensuring the minimum insertion mark on the seatpost is not visible.
- Fix it by tightening and locking the quick release lever.
3.10. Installation et retrait de la batterie
- Pour supprimer : Insert the key, turn it clockwise to unlock the battery, and remove the battery from the battery compartment.
- Pour installer : Put the battery into the battery compartment until it snaps into place. Ensure it is securely locked.

Image: Technical diagram illustrating the dimensions and key components of the electric bicycle.
4. Mode d'emploi
Familiarize yourself with the e-bike's controls before riding.
4.1. LCD Control and Power On/Off
- Mise sous tension : Long press the on/off button on the LCD display to turn it on.
- Éteindre: Long press the on/off button to turn the display off.
- The HD display shows speed, battery level, assist level, and other riding data.
4.2. Réglage des niveaux d'assistance
The e-bike features 5 assist levels:
- Short press the '+' button to increase the assist level.
- Short press the '-' button to decrease the assist level.
4.3. Contrôle de la lumière
To turn the headlight on or off, long press the '+' button.
4.4. 6km/h Walk Mode
For assistance when walking alongside your bike:
- Long press the '-' button to activate the walk mode (6km/h).
- Release the '-' button to disable the walk mode.
4.5. Checking the Braking System
Before each ride, ensure both front and rear hydraulic disc brakes are functioning correctly. Squeeze each brake lever individually and verify that the corresponding wheel stops firmly and smoothly.

Image: The e-bike's handlebar featuring the HD LCD display and a smartphone connected via Bluetooth, showing the app interface for monitoring speed, range, and settings.
5. Principales caractéristiques
The ONESPORT OT05 Pro is equipped with advanced features for performance and comfort:
5.1. Powerful 250W Motor
The 250W motor provides reliable power, optimized for European standards, allowing you to climb inclines up to 30° with ease.

Image : Une coupe transversale view of the 250W high-speed brushless motor, highlighting its internal components and integration with the rear wheel.
5.2. High-Capacity 36V 22.5Ah Lithium Battery
The superior 36V 22.5Ah lithium battery offers an extended range of up to 140 km in assisted mode on a single charge, with a charging time of 6-8 hours.

Image: A visual representation of the hidden 36V 22.5Ah lithium-ion battery, showing its placement within the bicycle frame and indicating a ride range of 130-140 KM.
5.3. Intelligent Torque Sensor
The intelligent torque sensor ensures intuitive and smooth pedal assistance, making every pedal stroke feel natural and effortless.

Image : Une image détaillée view of the torque sensor integrated into the e-bike's crank arm, designed for responsive power delivery.
5.4. Dual Hydraulic Disc Brakes
Equipped with 180mm hydraulic disc brakes (anti-corrosion treated) for powerful, progressive, and instant stopping power, even in wet conditions. Features automatic motor cut-off for enhanced safety.

Image : Gros plan views of the front and rear hydraulic disc brakes, emphasizing their robust design for maximum safety.
5.5. Front Suspension Fork
The front suspension fork absorbs bumps and vibrations, providing a smoother and more comfortable riding experience across various terrains.

Image: A visual representation of the front suspension fork, designed to reduce impact and enhance rider comfort.
5.6. Durable 27.5-inch Road Tires with Safety Reflective Strip
The 27.5-inch tires are designed for durability and traction, ensuring stability and a comfortable ride on any terrain. They feature a safety reflective strip for increased visibility.

Image: Close-ups of the taillight for good illumination, 700C*50C tires for traction and stability, and the front headlight for safe nighttime riding.
6. Entretien
Regular maintenance is crucial for the longevity and safe operation of your ONESPORT OT05 Pro electric bicycle. Perform the following checks and tasks regularly:
- Pneus: Check tire pressure before each ride. Ensure tires are inflated to the recommended PSI. Inspect for wear and damage.
- Freins: Vérifiez régulièrement l'usure des plaquettes de frein et assurez-vous que les leviers de frein offrent un freinage ferme et réactif. Ajustez ou remplacez-les au besoin.
- Chaîne: Veillez à ce que la chaîne reste propre et lubrifiée pour assurer des changements de vitesse fluides et éviter une usure prématurée.
- Batterie: Recharge the battery regularly, especially after long rides. Avoid completely draining the battery. Store the battery indoors in a cool, dry place.
- Fixations : Vérifiez régulièrement le serrage de tous les boulons, écrous et attaches rapides.
- Nettoyage: Nettoyez régulièrement votre vélo électrique avec de la colle.amp En tissu. Évitez de laver directement les composants électriques à haute pression.
7. Dépannage
If you encounter any issues with your ONESPORT OT05 Pro, please refer to this basic troubleshooting guide. For more complex problems, consult a qualified bicycle technician or contact customer support.
- Pas d'alimentation : Ensure the battery is fully charged and correctly installed. Check that the power button on the display is pressed correctly.
- Moteur non fonctionnel : Verify that the assist level is not set to '0'. Check for any error codes on the LCD display. Ensure all electrical connections are secure.
- Freins qui grincent/inefficaces : Inspect brake pads for wear and contamination. Clean rotors if necessary. If hydraulic brakes feel spongy, they may need bleeding by a professional.
- Bruits inhabituels : Vérifiez la présence de pièces desserrées, de problèmes de chaîne ou de débris coincés dans les pièces mobiles.
- L'affichage ne fonctionne pas : Vérifiez la connexion de la batterie et assurez-vous que le câble de l'écran est correctement connecté.
8. Spécifications techniques
| Spécification | Détail |
|---|---|
| Tranche d'âge | Adulte |
| Type de vélo | Vélo électrique |
| Type de frein | Disc (Hydraulic front and rear) |
| Couleur | Bleu gris |
| Dimensions (L x l x H) | 190 x 67 x 115 cm |
| Taille du cadre | 190cm x 67cm x 115cm |
| Style | Urbain |
| Type de matériau | Aluminium |
| Nombre de vitesses | 7 |
| Source d'énergie | Électrique |
| Caractéristiques spéciales | Torque Sensor, Dual Suspension, Hydraulic Front and Rear Brakes, Multiple Speeds, Rechargeable |
| Usage | Racing, Freestyle, Snow, Road, Jumping (Note: Usage may vary based on rider skill and conditions) |
| Suspension | Suspension de fourche |
| Taille de la roue | 27.5 pouces |
| Quoitage | 250 watts |
| Batterie | 21700 A - included |
| Poids du produit | 29 kilogramme |
| Numéro de modèle | OT05 Pro |
9. Garantie et assistance
Your ONESPORT OT05 Pro Electric Bicycle comes with a comprehensive warranty and support:
- Politique de retour: Enjoy a 14-day return policy without specific reason.
- Garantie du fabricant : A 2-year manufacturer's warranty covers technical defects.
- Composants inclus : Charger X 1, Handlebar X 1, Pedal X 1, Quick Release Axle X 1, Pump X 1, Instruction Manual X 1, 16-in-1 Installation Tool X 1, Mobile Phone Bag X 1.
For any technical assistance or warranty claims, please refer to the contact information provided in your included instruction manual or contact the seller, ChangXiao Ebike, directly through the Amazon platform.