1. Introduction
The UTRAI JS-AIR is a versatile and powerful portable car jump starter designed to provide emergency starting power for vehicles with dead batteries. It also functions as a power bank for charging electronic devices and features an integrated LED light for various situations. With its compact design and robust safety features, it's an essential tool for any driver.
This device is suitable for starting most 12V gas engines up to 4.0L and diesel engines up to 2.5L.

2. Package Contents
Please check the package for the following items:
- UTRAI Jump Starter (JS-AIR)
- Smart Clamps (Jump Cables)
- USB to Type-C Cable
- User Manual

3. Specifications
| Feature | Specification |
|---|---|
| Model | UTRAI Jump Starter Jstar Air |
| Battery Capacity | 8000mAh / 3.7V / 29.6Wh |
| Jump Start Output | 12V |
| Peak Current | 1000Amps |
| Starting Current | 250A |
| USB1 Output | 5V / 2.1A |
| USB2 Output | 5V / 1A |
| Type-C Input | 5V / 2A |
| Operating Temperature | -20℃ ~ +60℃ |
| Charging Time | 3.5 hours (with 5V / 2A charger) |
| Size (L * W * H) | 160mm * 30mm * 86mm |
| Item Weight | 0.38KG |
| Conversion Rate | 85%~90% |
| Number Of Built-in Batteries | 4 |
| External Testing Certification | pse, ROHS, FCC, ce |
| Special Features | USB, Lighting |
4. Safety Information
Please read and understand all safety information before using this product. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Do not immerse the product in water.
- Do not expose the product to extreme temperatures (above 60℃ or below -20℃).
- Do not disassemble or modify the product.
- Keep out of reach of children.
- Use only the provided smart clamps for jump-starting.
- Ensure proper polarity when connecting to a vehicle battery (red clamp to positive, black clamp to negative).
- Do not jump-start a vehicle if the jump starter's battery level is critically low.
- If the jump starter is swollen, leaking, or damaged, discontinue use immediately.
Integrated Protection Features:
- Over Voltages Protection
- Low Temperatures Protection
- High Temperatures Protection
- Overload Protection
- Over Currents Protection
- Short Circuits Protection
- Over Charges Protection
- Reverse Charges Protection

5. Charging the Jump Starter
Before first use, fully charge the jump starter. It is recommended to recharge the unit every 3-6 months to maintain battery health, even if not in use.
- Connect the provided USB to Type-C cable to the Type-C input port on the jump starter.
- Connect the other end of the USB cable to a 5V/2A USB wall adapter (not included).
- The LCD display will show the charging progress. A full charge takes approximately 3.5 hours.

6. Operating Instructions
6.1. Jump Starting a Vehicle
Ensure the jump starter is sufficiently charged (preferably above 50%) before attempting to jump-start a vehicle.
- Insert the Smart Clamps: Open your vehicle's trunk or hood to access the battery. Insert the blue end of the smart clamps into the 12V jump start output port on the jump starter. The red and green indicators on the smart clamps will flash alternately.
- Connect to Vehicle Battery: Connect the red clamp to the positive electrode (+) of the car battery and the black clamp to the negative electrode (-) of the car battery. Once connected correctly, the green indicator on the smart clamps will be continuously lit.
- Start Your Vehicle: Return to your vehicle's cabin and start the engine.
- Remove Clamps: Once the vehicle starts, immediately remove the smart clamps from the car battery, then disconnect them from the jump starter.


6.2. Using as a Power Bank
The UTRAI JS-AIR can charge various electronic devices via its USB output ports.
- Connect your device's charging cable to one of the jump starter's USB output ports (Output 1: 5V/2.1A, Output 2: 5V/1A).
- The jump starter will automatically begin charging your device.
- The LCD display will show 'OUT' and the current output voltage/amperage.

6.3. Using the LED Light
The integrated LED light has three modes: Normally On, SOS, and Sharp Flash.
- Turn On/Off: Press and hold the power button for a few seconds to turn the LED light on or off.
- Cycle Modes: Briefly press the power button to cycle through the light modes (Normally On > SOS > Sharp Flash > Off).

7. Maintenance
- Store the jump starter in a cool, dry place away from direct sunlight.
- Keep the ports free from dust and debris.
- Clean the exterior with a soft, damp cloth. Do not use harsh chemicals or abrasives.
- Recharge the unit every 3-6 months to prolong battery life, even if not in use.
8. Troubleshooting
If you encounter issues with your UTRAI Jump Starter, please refer to the following common problems and solutions:
- Unit not turning on: Ensure the unit is charged. If not, charge it fully.
- Vehicle not starting:
- Check that the smart clamps are securely connected to both the jump starter and the vehicle battery with correct polarity (red to +, black to -).
- Ensure the green indicator on the smart clamps is solid.
- Verify that your vehicle's engine size is within the jump starter's specifications (4.0L Gas / 2.5L Diesel).
- The vehicle battery might be severely damaged and require professional assistance.
- Smart clamps flashing red/green alternately: This indicates the clamps are ready to be connected to the car battery.
- Smart clamps showing a solid green light: This indicates a correct connection to the car battery and the jump starter is ready to provide power.
For more detailed troubleshooting and common usage problems, please visit the official UTRAI troubleshooting page: https://www.utrai.com/pages/troubleshooting
9. User Tips
- Always keep your UTRAI Jump Starter charged, especially before long trips, to ensure it's ready when you need it most.
- The package includes the jump starter unit and the necessary smart clamps, so you have everything required for emergency starts.
- Store the jump starter in your glove compartment or trunk for easy access. Its compact size makes it convenient for travel.

10. Warranty and Support
UTRAI offers a 1-Year Warranty for this product. In case of quality problems, a 365-day free replacement policy is available. Please contact UTRAI Official Store customer service for support and warranty claims.
For further assistance, please refer to the contact information provided with your purchase or visit the official UTRAI website.





