1. Introduction
Thank you for purchasing the Nikko RC Hercules 6-Wheel All-Terrain Remote Control Vehicle. This manual provides essential information for the safe operation, setup, and maintenance of your new RC vehicle. Please read it thoroughly before use and retain it for future reference.

Image 1.1: The Nikko RC Hercules vehicle and its remote controller. This image displays the vehicle's robust design and the ergonomic remote control.
2. Safety Warnings
- Age Recommendation: This product is recommended for children aged 6 years and older.
- Battery Safety:
- Always use the specified batteries: 6.4V LiFePo4 for the vehicle and 3x AAA for the remote control.
- Do not mix old and new batteries, or different types of batteries.
- Ensure correct polarity when inserting batteries.
- Remove batteries from the vehicle and remote control when not in use for extended periods.
- Do not attempt to recharge non-rechargeable batteries.
- Rechargeable batteries must be charged under adult supervision.
- Do not short-circuit battery terminals.
- Operating Environment:
- Operate the vehicle in open areas, away from people, pets, and obstacles.
- Avoid operating near water, roads, or electrical wires.
- Do not operate in adverse weather conditions (rain, snow).
- General Precautions:
- Keep fingers, hair, and loose clothing away from moving parts (wheels).
- Do not touch the motor immediately after use as it may be hot.
- Adult supervision is recommended for younger users.

Image 2.1: Excerpt from the multi-language instruction sheet, detailing battery requirements and safety warnings. It shows the battery types for the controller (3x AAA) and the vehicle (6.4V LiFePo4).
3. Package Contents
Ensure all items are present in the package:
- Nikko RC Hercules 6-Wheel All-Terrain Vehicle
- 2.4 GHz Remote Control
- 6.4V LiFePo4 Rechargeable Battery Pack (for vehicle)
- USB Charging Cable (for vehicle battery)
- 3 x AAA Batteries (for remote control)
- User Manual

Image 3.1: The complete package contents, showing the vehicle, remote control, user manual, rechargeable battery, USB charging cable, and AAA batteries.
4. Setup
4.1. Charging the Vehicle Battery
- Locate the 6.4V LiFePo4 battery pack and the USB charging cable.
- Connect the charging cable to the battery pack.
- Plug the USB end of the cable into a standard USB power source (e.g., computer USB port, USB wall adapter).
- The charging indicator light (if present) will show the charging status. Refer to the specific indicator behavior on the charging cable or battery for full details.
- Once fully charged, disconnect the battery from the charging cable and the power source.

Image 4.1: Close-up view of the USB-C charging port integrated into the vehicle's battery compartment, showing the connection point for the charging cable.
4.2. Installing Vehicle Battery
- Locate the battery compartment on the underside of the vehicle.
- Open the battery compartment cover.
- Insert the charged 6.4V LiFePo4 battery pack, ensuring correct polarity.
- Securely close the battery compartment cover.

Image 4.2: View of the vehicle's battery compartment, showing where the rechargeable battery pack is inserted.
4.3. Installing Remote Control Batteries
- Locate the battery compartment on the back of the remote control.
- Open the battery compartment cover.
- Insert 3x AAA batteries, matching the polarity indicators (+/-).
- Securely close the battery compartment cover.

Image 4.3: The rear view of the remote control, indicating the location for AAA battery installation.
4.4. Pairing the Vehicle and Remote Control
The Nikko RC Hercules utilizes 2.4 GHz technology for automatic pairing. Follow these steps:
- Ensure both the vehicle and the remote control have fresh or fully charged batteries installed.
- Turn on the vehicle using its power switch.
- Turn on the remote control using its power switch.
- The vehicle and remote control should automatically pair. A light indicator on both devices may confirm successful pairing. If pairing fails, turn both devices off and repeat the process.
5. Operating Instructions
Once paired, you can begin operating your Nikko RC Hercules vehicle.
5.1. Basic Controls
- Forward/Backward: Use the left joystick (or trigger) to move the vehicle forward or backward.
- Steering (Left/Right): Use the right joystick (or steering wheel) to turn the vehicle left or right.
5.2. Special Features
- 360-Degree Rotations: The 6-wheel drive system allows for impressive 360-degree spins. Experiment with joystick combinations to achieve this maneuver.
- All-Terrain Capability: The Hercules is designed for various surfaces including gravel, mud, and uneven terrain. Its robust design and 6-wheel drive provide excellent traction.

Image 5.1: A child demonstrating the operation of the Nikko RC Hercules in an outdoor setting, highlighting its usability.

Image 5.2: This image illustrates key features such as 2.4 GHz frequency, 360-degree rotation capability, support for up to 10 players, and USB-C recharging, along with vehicle dimensions.
6. Maintenance
- Cleaning: After use, especially on dirty or dusty surfaces, gently wipe the vehicle with a soft, dry cloth. Do not use water or chemical cleaners, as this may damage electronic components.
- Storage: Store the vehicle and remote control in a cool, dry place away from direct sunlight. Remove batteries if storing for extended periods.
- Battery Care: Always fully charge the LiFePo4 battery before storage and periodically if not used for a long time to maintain battery health.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vehicle does not move or respond. |
|
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| Short operating range or intermittent control. |
|
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| Vehicle moves slowly or lacks power. |
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|
8. Specifications
- Model: Nikko RC Hercules (10421)
- Vehicle Dimensions (L x W x H): Approximately 30 cm x 14 cm x 10 cm (12" x 6.7" x 5.5")
- Weight: 1.52 kg
- Speed: Up to 15 km/h
- Control Frequency: 2.4 GHz
- Control Range: Up to 40 meters
- Vehicle Battery: 6.4V LiFePo4 rechargeable battery
- Remote Control Batteries: 3 x AAA (included)
- Material: Plastic, Rubber
- Recommended Age: 6 years and up
- Number of Players: Up to 10 simultaneously
9. Warranty and Support
For warranty information, technical support, or replacement parts, please contact Nikko Toys customer service.
- Website: www.nikkotoys.com
- Email: customerservice@nikkotoys.com
Please have your product model number (10421) and purchase details ready when contacting support.





