Introduction
Thank you for choosing the FLYLINKTECH 4000A Peak Car Jump Starter and 18000mAh Power Bank. This device is an essential emergency tool designed to quickly jump-start your 12V vehicles and serve as a portable power bank for your electronic devices. This manual provides detailed instructions for safe and effective use, maintenance, and troubleshooting.
What's in the Box
Carefully unpack your FLYLINKTECH Jump Starter and ensure all items are present:

Image: Contents of the FLYLINKTECH Jump Starter box, showing the main unit, smart clamps, USB-C cable, user manual, and a carrying case.
- FLYLINKTECH Jump Starter Unit (approx. 19cm x 9cm)
- Smart Jumper Clamps (Red and Black)
- USB-A to USB-C Charging Cable
- User Manual
- Carrying Case
Product Overview
Familiarize yourself with the various components and ports of your jump starter:

Image: Detailed diagram highlighting the LED Display, Switch Button, LED Flash Light, USB1 5V/2.4A Output Port, USB2 QC3.0 Output Port, Jump Start Socket, and 5V/2A Type C Input Port.
- LED Display: Shows battery percentage and output status.
- Switch Button: Power on/off the unit.
- LED Flash Light: Provides illumination and emergency signaling.
- USB1 5V/2.4A Output Port: Standard USB output for charging devices.
- USB2 QC3.0 Output Port: Quick Charge 3.0 compatible USB output for faster charging.
- Jump Start Socket: Port for connecting the smart jumper clamps.
- 5V/2A Type C Input Port: Used to recharge the jump starter unit.
Setup and Initial Charge
Before first use, fully charge your FLYLINKTECH Jump Starter. It is recommended to recharge the unit at least once every 3 months to maintain optimal battery health.
- Connect the provided USB-A to USB-C charging cable to the 5V/2A Type C Input Port on the jump starter.
- Connect the other end of the USB cable to a suitable USB power adapter (not included) or a powered USB port.
- The LED display will show the charging progress. Charge until the display indicates 100%.
Operating Instructions
Jump Starting a Vehicle
The FLYLINKTECH Jump Starter is designed to safely jump-start 12V vehicles with up to 9.0L gas engines or 8.0L diesel engines. Ensure the jump starter is sufficiently charged before use.

Image: Easy operation steps for jump starting a vehicle.
- Insert Clamps: Firmly insert the blue plug of the smart jumper clamps into the Jump Start Socket on the booster unit.
- Connect to Battery: Connect the red clamp to the positive (+) terminal of your car battery and the black clamp to the negative (-) terminal. The smart clamps feature multiple protections to prevent sparks and damage.
- Start Vehicle: Enter your vehicle and start the engine. If the car does not start immediately, wait 30 seconds and try again. Do not crank for more than 3 seconds per attempt.
- Remove Clamps: Once the car starts, immediately remove the smart clamps from the car battery, then disconnect the clamps from the jump starter unit.
Smart Clamps Protection: The included smart clamps provide comprehensive safety features, including Short Circuit Protection, Reverse Charge Protection, Over Charge Protection, Reverse Polarity Protection, Over Discharge Protection, Over Current Protection, Reverse Connection Protection, and High Temperature Protection. This ensures a safe jump-starting process without sparks or damage to your vehicle's battery or the jump starter.

Image: Smart Clamps Protection features.
Using as a Portable Power Bank
The 18000mAh capacity allows you to charge various electronic devices on the go.

Image: Jump starter functioning as a portable power bank, charging multiple devices.
- Connect your electronic device (smartphone, tablet, earphone, camera, game console, drone, etc.) to either the USB1 (5V/2.4A) or USB2 (QC3.0) output port using an appropriate USB cable.
- The jump starter will automatically begin charging your device. The LED display will show the remaining battery percentage.
LED Flashlight Modes
The built-in LED light offers multiple modes for various situations:
- Press the 'LED' button once to turn on the standard flashlight.
- Press the 'LED' button a second time for Strobe mode.
- Press the 'LED' button a third time for SOS signaling mode.
- Press the 'LED' button a fourth time to turn off the light.
Maintenance and Care
- Recharging: Recharge your jump starter at least once every 3 months, even if not used, to prolong battery life.
- Storage: Store the unit in a cool, dry place, away from direct sunlight and extreme temperatures.
- Cleaning: Wipe the unit with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Water Resistance: The unit features an IP67 waterproof design, making it resistant to dust and water immersion up to 1 meter for 30 minutes. However, avoid prolonged exposure to water and ensure ports are dry before use or charging.
- Durability: The robust design is scratch-resistant, dust-proof, and shock-proof, capable of withstanding harsh environments and accidental drops.

Image: IP67 Waterproof

Image: Durable Design

Image: Works in Extreme Environments (-20°C to 60°C)
Troubleshooting
If you encounter issues with your FLYLINKTECH Jump Starter, please refer to the following common solutions:
- Unit does not turn on: Ensure the unit is fully charged. Recharge if the battery level is low.
- Car does not start:
- Check that the smart clamps are securely and correctly connected to the car battery terminals (red to positive, black to negative).
- Ensure the smart clamp's blue plug is fully inserted into the jump start socket on the booster.
- Verify that your car battery voltage is 12V.
- If the car battery is completely dead, it may take a few attempts. Wait 30 seconds between attempts.
- Device not charging from USB ports: Ensure the jump starter is powered on and your device's charging cable is properly connected.
- LED light not working: Check if the unit is powered on and the LED button is pressed correctly.
If problems persist, contact customer support for further assistance.
Specifications
| Feature | Specification |
|---|---|
| Peak Current | 4000A |
| Battery Capacity | 18000mAh (18000-20000mAh) |
| Suitable for Car Battery Voltage | 12V |
| Suitable for Gas Engine | Up to 9.0L |
| Suitable for Diesel Engine | Up to 8.0L |
| USB Output 1 | 5V/2.4A |
| USB Output 2 | Quick Charge 3.0 |
| Type-C Input | 5V/2A |
| LED Light Modes | Flashlight / Strobe / SOS |
| Operating Temperature | -20°C to 60°C (-4°F to 140°F) |
| Waterproof Rating | IP67 |
| Item Weight | 1.13 kg |
| Conversion Rate | 80%~85% |
| Number of Built-in Batteries | 4 |
| Certification | CE |
User Tips
- Always check the jump starter's charge level before embarking on long trips or when anticipating cold weather.
- Familiarize yourself with the LED light modes (Flashlight, Strobe, SOS) for emergency signaling and illumination.
- Utilize the power bank feature to keep your essential electronic devices charged while on the go.
- Keep the jump starter and its accessories in the provided carrying case for protection and easy access.
Warranty and Support
For warranty information, technical support, or any product-related inquiries, please refer to the official product website or contact the seller directly through your purchase platform. Keep your proof of purchase for warranty claims.





