1. Introduction
The UTRAI JS-1 Pro is a powerful and versatile car jump starter designed to provide reliable emergency starting power for your vehicle. Beyond jump starting, it functions as a portable power bank with wireless charging capabilities and features a multi-mode LED flashlight and a safety hammer for emergencies. This manual provides essential information for safe and effective use of your device.
2. Product Overview
Key Features
- High Peak Current: 4000A peak current for reliable starting.
- Engine Compatibility: Suitable for up to 8.0L Gas and 7.5L Diesel engines.
- Power Bank Functionality: 59.2Wh capacity to charge multiple devices.
- Wireless Charging: Integrated 10W wireless charging pad.
- Emergency Lighting: 4-mode LED flashlight (illumination, SOS, Strobe, Warning).
- Safety Features: ABS fireproof shell, Smart NTC Protection, and a built-in safety hammer.
- Wide Operating Temperature: Functions effectively from -20°C to +60°C.
- Informative Display: 2-inch large display screen to monitor performance status.
Components and Layout

- LED Flashlight
- Display Screen
- Power Button
- Wireless Charging Pad
- Compass
- Safety Hammer
- EC5 Output Port
- USB-C Input Port
- USB Output Port 1
- USB Output Port 2
- LED Indicator (on smart clamps)
- Battery Clamps Plug
- Red Battery Clamp (Positive)
- Black Battery Clamp (Negative)
3. Setup
What's in the Box

Your UTRAI JS-1 Pro package should include:
- UTRAI JS-1 Pro Jump Starter Unit
- Smart Battery Clamps
- USB-C Charging Cable
- 12V DC Car Charger Adapter
- User Manual
- Storage Case
Initial Charging
Before first use, fully charge the UTRAI JS-1 Pro using the provided USB-C cable and a compatible power adapter. The display screen will show the charging progress. A full charge typically takes 4 to 4.5 hours via the Type-C input (5V/2A, 9V/2A).
4. Operating Instructions
4.1. Jump Starting a Vehicle
Follow these steps to safely jump start your vehicle:
- Connect Smart Clamps: Insert the blue plug of the smart battery clamps into the EC5 Output Port (7) on the jump starter.
- Attach to Battery: Connect the red (positive) clamp to the positive (+) terminal of your vehicle's battery and the black (negative) clamp to the negative (-) terminal.
- Check Indicator: The LED Indicator (11) on the smart clamps will flash red and green alternately, indicating it's ready to start. If it shows a solid green, it's ready. If it shows a solid red or no light, check connections or the jump starter's charge.
- Start Vehicle: Return to your vehicle and start the engine.
- Remove Clamps: Once the vehicle starts, immediately remove the smart clamps from the vehicle battery, then disconnect them from the jump starter.

4.2. Charging Mobile Devices
The JS-1 Pro can charge up to three devices simultaneously:
- USB Charging: Use the USB Output Port 1 (9) (5V/3A, 9V/2A, 12V/1.5A) or USB Output Port 2 (10) (5V/2.1A) with appropriate cables to charge phones, tablets, and other USB-powered devices.
- Wireless Charging: Place your Qi-compatible device on the Wireless Charging Pad (4) for 10W wireless charging.

4.3. Using the LED Flashlight
The built-in LED Flashlight (1) offers four modes for various situations:
- Illumination: Standard bright light for general use.
- SOS: Flashes the international SOS signal for emergencies.
- Strobe: Rapid flashing light for signaling or disorientation.
- Warning: Alternating red and blue light for roadside warnings.

4.4. Using the Safety Hammer
In an emergency, the integrated Safety Hammer (6) can be used to break vehicle windows for escape.

4.5. Powering 12V Auto Appliances
The EC5 Output Port (7) can also be used to power 12V car appliances such as car vacuums, car fridges, and other compatible devices.

5. Maintenance
- Regular Charging: To protect battery life and ensure readiness, charge the JS-1 Pro every 3 months, even if not in use.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use harsh chemicals or abrasive materials.
6. Troubleshooting
- Unit Not Turning On: Ensure the unit is charged. Press and hold the power button for a few seconds.
- Vehicle Not Starting: Check that the smart clamps are securely connected to the correct battery terminals. Ensure the smart clamp LED indicator is solid green before attempting to start. If the battery is severely discharged, it may require a few minutes for the jump starter to provide enough charge.
- Smart Clamp Indicator Issues: If the indicator shows solid red or no light, check for reverse polarity connection or a faulty battery. The Smart NTC Protection feature monitors battery temperature to prevent overheating during operation.
- Charging Issues: Ensure the USB-C cable is properly connected to both the jump starter and the power source. For wireless charging, ensure your device is Qi-compatible and correctly placed on the charging pad.
7. Specifications

| Feature | Specification |
|---|---|
| Model | JS-1 Pro |
| Peak Current | 4000A |
| Starting Current | 1250A |
| Car Jump Start Output | 12V |
| Battery Capacity | 59.2Wh (12000-18000mAh) |
| Gas Engine Rating | Up to 8.0L |
| Diesel Engine Rating | Up to 7.5L |
| USB-C Input | 5V/2A, 9V/2A |
| USB1 Output | 5V/3A, 9V/2A, 12V/1.5A |
| USB2 Output | 5V/2.1A |
| Wireless Charging | 10W |
| DC Output | 12V-16V/8A |
| Operating Temperature | -20℃~+60℃ |
| LED Light Power | White: 1W |
| Charging Time (Type-C) | 4h-4.5h |
| Battery Cycle Life | 300 times |
| Unit Size (L*W*H) | 179mm * 90mm * 47mm |
| Item Weight | 1.4kg |
| Waterproof | Yes |
| Certifications | CE, FCC, SDS, MSDS, RoHS, PSE, CCC |
8. User Tips
- Fast Charging Performance: The device supports fast charging for connected devices, with conversion rates typically between 85% and 90%. Utilize the Type-C input and USB output ports for efficient charging of various electronics.
- Optimal Battery Life: To maximize the lifespan of your jump starter's battery, remember to charge it fully every three months, even during periods of non-use.
- Emergency Preparedness: Keep the jump starter charged and accessible in your vehicle for unexpected battery issues. The built-in safety hammer and multi-mode flashlight are crucial emergency tools.
9. Warranty & Support
The UTRAI JS-1 Pro comes with a 365-day free replacement policy, ensuring peace of mind regarding product defects or malfunctions within the specified period.
For any questions, technical assistance, or warranty claims, please contact UTRAI customer support through the seller's platform or official website. Please have your purchase details and product model number ready when contacting support.





