1. Introduction
Welcome to the user manual for your new Hiboy BK1 Electric Balance Bike. This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your electric balance bike. Please read this manual thoroughly before first use and keep it for future reference. Ensure all riders wear appropriate safety gear, including a helmet and protective pads, and are supervised by an adult.
2. What's in the Box
Upon opening your Hiboy BK1 Electric Balance Bike package, please verify that all the following components are included:
- Electric Bike
- Charger
- User Manual
3. Assembly Instructions
The Hiboy BK1 Electric Balance Bike is 90% pre-installed. Follow these steps to complete the assembly:
- Install the Front Wheel: Secure the front wheel to the fork using the provided long screw and plastic spacers. Ensure the wheel is centered and does not wobble. Tighten the screw nuts on each side of the fork.
- Install the Handlebar: Unscrew the four handlebar screws. Align the handlebar to a comfortable position, ensuring it is centered using the reference lines. Screw on the four screws to lock the handlebar in place.
- Adjust Brakes: Adjust and align the brakes using the provided wrench to ensure proper stopping function.
- Adjust Seat Height: Use an Allen wrench (provided) to adjust the seat height. The adjustable seat allows for a height range of 17.2 inches to 19.1 inches to suit the rider's age and height.
- Inflate Tires: The 12-inch air-filled tires may arrive partially deflated. Inflate them to the recommended pressure for optimal performance and comfort.
Video Description: This video demonstrates the unboxing and installation process for the Hiboy BK1 Electric Balance Bike, including attaching the front wheel and handlebar.

Image Description: A close-up diagram illustrating the handlebar assembly and adjustment points for the Hiboy BK1 Electric Balance Bike.

Image Description: A diagram highlighting the adjustable seat mechanism of the Hiboy BK1 Electric Balance Bike, showing its height range.
4. Operating Instructions
Familiarize yourself with the controls and operation of your electric balance bike for a safe and enjoyable experience.
- Starting the Bike: The bike features a push-start design. Hold onto both handlebars and gently kick off the ground to generate some initial speed. Once the bike begins to glide, press and hold down the twist-type accelerator for the 100W motor to activate.
- Riding: Once the motor is engaged, place both feet on the footrests. Maintain balance and steer using the flexible handlebar. The bike has two-gear settings for adjustable speed.
- Stopping: To slow down, release the accelerator. To come to a complete stop, gradually squeeze the hand brake lever. The bike is equipped with a front V brake and a rear e-brake for reliable stopping. The suitable seat height also allows riders to stop the bike with their feet.
Video Description: This video showcases children aged 2-5 years old riding the Hiboy Electric Balance Bike, demonstrating its ease of use and fun features.

Image Description: A diagram showing the internal components of the quiet 100W motor and the adjustable gear feature of the Hiboy BK1 Electric Balance Bike.

Image Description: A diagram detailing the double brake system, including the front V-brake and rear e-brake, for safe stopping on the Hiboy BK1 Electric Balance Bike.
5. Charging Instructions
To charge your Hiboy BK1 Electric Balance Bike:
- Locate the charging port on the underside of the main frame.
- Open the rubber plug covering the charging port.
- Insert the charger cable into the port.
- Plug the charger into a power outlet. The LED indicator on the charger will be red while charging and turn green when fully charged.
- Once fully charged, unplug the charger from both the bike and the power outlet to prevent potential battery damage.
Video Description: This video demonstrates the location of the charging port and the charging process for the Hiboy BK1 Electric Balance Bike.

Image Description: A diagram illustrating the integrated long-range battery within the frame of the Hiboy BK1 Electric Balance Bike.
6. Maintenance
Regular maintenance ensures the longevity and safe operation of your Hiboy BK1 Electric Balance Bike.
- Cleaning: Wipe down the bike with a damp cloth after use. Avoid using harsh chemicals or excessive water, especially near electrical components.
- Tire Pressure: Regularly check the pressure of the 12-inch air-filled tires. Maintain recommended pressure for optimal ride quality and battery efficiency.
- Brake Check: Periodically inspect the front V brake and rear e-brake for proper function and wear. Adjust if necessary.
- Battery Care: Store the bike in a cool, dry place. Avoid fully discharging the battery frequently. Charge the battery regularly, even if the bike is not in use, to maintain its health.
7. Safety Guidelines
Your safety and the safety of others are paramount. Adhere to these guidelines:
- Always wear a properly fitted helmet and appropriate protective gear (knee pads, elbow pads) when riding.
- Ensure the rider is within the recommended age range of 3-5 years and does not exceed the maximum weight recommendation of 77.16 pounds.
- Ride in safe, open areas away from traffic, pedestrians, and other hazards.
- Adult supervision is required at all times during operation.
- Do not ride in wet conditions or on slippery surfaces.
8. Specifications
| Feature | Specification |
|---|---|
| Bike Type | Electric Bike |
| Age Range (Description) | 3-5 years |
| Brand | Hiboy |
| Number of Speeds | 2 |
| Color | Black |
| Wheel Size | 12 Inches |
| Frame Material | Alloy Steel |
| Suspension Type | Rigid |
| Special Feature | Electric |
| Power Source | Rechargeable Battery |
| Wattage | 100 watts |
| Lithium Battery Energy Content | 44.4 Watt Hours |
| Bicycle Gear Shifter Type | Twist Grip |
| Item Weight | 8 Kilograms (17.64 lbs) |
| Seatpost Travel Distance Maximum | 3.1 Inches |
| Maximum Weight Recommendation | 77.16 Pounds |
| Minimum User Height | 17 Inches |
| Model Number | FN-A1 |
| Model Name | BK1 |
9. Troubleshooting
If you encounter any issues with your Hiboy BK1 Electric Balance Bike, please refer to the following common problems and solutions:
- Bike Not Turning On/No Power: Ensure the battery is fully charged. Check the charging cable and port for any damage. If the issue persists, the battery may need replacement.
- Battery Not Holding Charge: This can occur over time. Ensure you are unplugging the charger once the battery is full. If the battery life significantly decreases, it may require replacement.
- Brakes Not Functioning Properly: Inspect the brake levers and cables for any looseness or damage. Adjust the brakes as needed. If the issue continues, professional inspection may be required.
- Unusual Noises During Operation: Stop riding immediately. Check for any loose parts, debris in the wheels, or issues with the motor. Contact customer support if the source of the noise cannot be identified or resolved.
For complex issues or problems not listed here, please contact Hiboy customer support.
10. Warranty & Support
The Hiboy BK1 Electric Balance Bike comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use. Please retain your proof of purchase for warranty claims.
For any questions, technical support, or warranty inquiries, please visit the official Hiboy website or contact their customer service department. Contact information can typically be found on the product packaging or the official brand website.