Important Safety Information
⚠️ Please mind potential fire risk and strictly follow the instruction manual for charging and storage. While using the product, please wear protective equipment and fully comply with the applicable law and regulations.
1. Setup and Assembly
The ONESPORT OT05 PRO E-Bike requires some assembly before its first use. Please follow the steps below carefully.
1.1 Unboxing and Initial Assembly
This video demonstrates the unboxing and initial assembly steps for the ONESPORT OT05 PRO E-Bike, including attaching the front wheel, handlebars, and pedals.
- Carefully remove the e-bike and all components from the packaging.
- Attach the front wheel to the front fork. Ensure all quick-release mechanisms or bolts are securely fastened.
- Install the handlebar stem and handlebars. Adjust the handlebar angle for comfortable riding.
- Attach the pedals. Note that pedals are typically left (L) and right (R) specific and thread in opposite directions.
- Install the headlight and any other accessories provided.
- Inflate the tires to the recommended pressure (refer to tire sidewall for PSI).
1.2 Battery Charging
Before first use, fully charge the e-bike's battery.
- Connect the provided 42V 3A charger to the battery charging port and a standard wall outlet.
- The charging indicator on the charger or battery will show the charging status.
- Charging typically takes 6-8 hours for a full charge.
- Disconnect the charger once the battery is fully charged.

The 36V 22.5AH Lithium-Ion battery provides over 130-140km of assisted riding on a single charge. Charger input is 42V 3A, and charging time is 6-8 hours.
2. Operating Instructions
Familiarize yourself with the e-bike's controls and riding modes for an optimal experience.
2.1 Riding Modes

The ONESPORT OT05 PRO E-Bike supports three riding modes: Support Mode, Pedal Mode, and Purely Electric mode.
- Support Mode: Provides electric assistance while you pedal, making rides easier, especially on inclines.
- Pedal Mode: Functions as a traditional bicycle with no electric assistance.
- Purely Electric Mode: Allows you to ride using only the motor, without pedaling.
2.2 Instruments and Controllers

The e-bike features a 3-speed multifunction LCD display with Bluetooth connectivity. This display allows you to monitor speed, battery level, mileage, and control various settings. Connect via Bluetooth to the companion app for extended features and ride tracking.
2.3 Torque Sensor

The integrated torque sensor provides strong power for easy climbing, enhancing the riding experience by responding intuitively to your pedaling effort.
2.4 Braking System

The ONESPORT OT05 PRO is equipped with front and rear hydraulic disc brakes for reliable stopping power in various conditions.
2.5 Lighting System

- Headlight: The front headlight provides strong illumination to ensure safe nighttime riding. Activate it via the control panel.
- Taillight: The rear taillight offers good illumination and an eye-catching brake light feature, further enhancing safety during night rides.
3. Maintenance
Regular maintenance ensures the longevity and optimal performance of your e-bike.
3.1 Battery Care
- To prolong battery life, avoid fully discharging the battery regularly.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- If not in use for extended periods, charge the battery periodically (e.g., once a month) to maintain its health.
3.2 Tire Care
- Regularly check the pressure of the 700C*50C pneumatic tires and inflate them to the recommended PSI for optimal performance, comfort, and safety.
- Inspect tires for any signs of wear, punctures, or damage before each ride.
3.3 Brake Maintenance
- Periodically check the hydraulic disc brakes for proper function and wear on the brake pads.
- If you notice reduced braking performance or unusual noises, consult a professional for brake adjustments or pad replacement.
3.4 General Cleaning
- Clean the e-bike regularly with a damp cloth and mild soap.
- Avoid using high-pressure water jets directly on electrical components, motor, or battery to prevent damage.
- Lubricate the chain periodically to ensure smooth operation.
4. Troubleshooting
If you encounter any issues with your ONESPORT OT05 PRO E-Bike, consider the following common troubleshooting steps:
- E-bike not powering on: Check if the battery is properly installed and charged. Ensure all connections are secure.
- Motor not assisting: Verify that the e-bike is in an assisted riding mode (not purely pedal mode). Check the display settings for any error codes.
- Reduced range: This could be due to low tire pressure, riding in higher assist modes, or aging battery. Ensure tires are properly inflated and consider charging the battery fully.
- Brake issues: If brakes feel spongy or are not stopping effectively, inspect brake pads for wear and check for any leaks in the hydraulic system. Professional inspection is recommended for hydraulic brake issues.
For more complex issues or persistent problems, please refer to the full user manual (if available) or contact customer support for assistance.
5. Specifications

Detailed product parameters for the ONESPORT OT05 PRO Electric Bike.
| Feature | Specification |
|---|---|
| Name | OT05PRO Electric Bike |
| Model Number | OT05 |
| Brand | ONESPORT |
| Frame Material | Aluminum Alloy |
| Damping | Aluminum shoulder iron leg cushioned front fork (non-adjustable) |
| Motor | 36V*250W Rear Brushless Motor |
| Wattage | 200 - 250W |
| Voltage | 36V |
| Battery | 36V 22.5AH 18650 Lithium Battery |
| Power Supply | Lithium Battery |
| Instrument/Display | 3-Speed multifunction LCD with Bluetooth |
| Max Speed | ≤ 25km/h |
| Range per Power | Pure Electric 70-80 km, Assist 130-140 km |
| Charging Time | 6-8 Hours |
| Wheel Size | 27.5 inches |
| Tire | 27.5 * 2.25 pneumatic tires (700C*50C) |
| Speed Class | 7 speed (Shimano 7 Speed) |
| Braking System | Hydraulic Disc Brakes |
| Torque | 30-50 Nm |
| Engine Position | Rear hub motor |
| Battery Location | Rear bracket |
| Net Weight | 28 kg (approx. 61.7 lbs) |
| Gross Weight | 35.5 kg (approx. 78.2 lbs) |
| Maximum Load | 100 kg |
| Fork Stroke | 80mm |
| Product Size | 1800 * 680 * 1100mm (Handlebar length: 68cm) |
| Package Size | 1480 * 240 * 790mm |
| Recommended Height | 160-200cm |
| Rated Passenger Capacity | One Seat |
| Certification | CE |
| Origin | Mainland China |

Dimensions of the e-bike: 1900mm (length), 1100mm (height), with a recommended rider height of 160-200cm and a maximum payload of 100kg.
6. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.
The product is covered by a return and refund policy. For details, please refer to the seller's policy or contact customer service.