1. Introduction
The VTOMAN V10 Pro 4500A Jump Starter is a powerful and versatile device designed to provide reliable jump-starting for a wide range of 12V vehicles, including all gasoline and up to 10.0L diesel engines. Beyond its primary function, it also serves as a portable power bank for charging electronic devices and features a multi-mode LED flashlight for emergencies. This manual provides essential information for safe and effective use of your V10 Pro Jump Starter.

Figure 1: VTOMAN V10 Pro 4500A Jump Starter
2. What's in the Box
Carefully unpack all items and ensure you have received the following components:
- 1 x V10 Pro Jump Starter Unit
- 1 x Smart Jumper Cable with Indicator
- 1 x USB-A to Type-C Cable
- 1 x Type-C to Type-C Cable
- 1 x Storage Case
- 1 x User Manual

Figure 2: Package Contents
3. Product Features
- High Starting Power: Genuine 4500 Amps peak current, capable of jump starting all 12V gasoline engines and up to 10.0L diesel engines.
- Versatile Power Bank: Equipped with USB-C/PD15W, dual USB-A/Quick Charging outputs, and 15V/10A DC output for charging various electronic devices and powering car accessories.
- Advanced Safety: Features 10 advanced safety technologies including spark-proof, reverse-charge, over-current, over-charge, reverse-polarity, high-temp, low-temp, short-circuit, over-voltage, and over-load protection.
- Extreme Weather Operation: Designed to operate effectively in temperatures ranging from -4°F to 140°F (-20°C to 60°C).
- Long Standby Time: Automatically powers down after 10 seconds of inactivity, preserving power for up to 24 months on a single charge.
- Integrated LED Flashlight: 400 lumen LED light with 3 modes: Normal, Strobe, and SOS for emergency signaling.
- Portable Design: Compact and comes with a sturdy storage case for easy transport and storage.

Figure 3: Wide Vehicle Compatibility
4. Setup
4.1 Charging the Jump Starter
Before first use, fully charge the VTOMAN V10 Pro. It can be charged using the provided USB-C cable via a wall charger (not included) or in your car. A full charge typically takes about 5 hours.
- Connect the Type-C cable to the IN/OUT (5V/3A 15W) port on the jump starter.
- Connect the other end of the cable to a USB wall adapter or a car charger.
- The battery indicator lights will illuminate to show the charging progress. All four lights indicate a full charge.

Figure 4: Charging at Home

Figure 5: Charging in Car
5. Operating Instructions
5.1 Jump Starting a Vehicle
Ensure the jump starter is fully charged before attempting to jump start a vehicle.
- Connect Smart Jumper Cable: Insert the blue end of the smart jumper cable into the jump start socket on the V10 Pro.
- Connect to Vehicle Battery: Attach the red clamp to the positive (+) terminal of the vehicle battery and the black clamp to the negative (-) terminal.
- Check LED Indicator: Observe the LED indicator on the smart jumper cable:
- Solid Green LED: Connection is correct. Proceed to start the vehicle.
- Red LED: Reverse connection. Correct the polarity of the battery clamps.
- Blinking Green LED: Vehicle battery voltage is too low. Press the "BOOST" button on the smart cable. Once the Green LED illuminates solid, start the vehicle within 30 seconds.
- No Light: Vehicle battery may be damaged. First, ensure correct connection. Try pressing the "BOOST" button. If Green LED illuminates solid, start the vehicle within 30 seconds.
- Start Vehicle: Once the LED is solid green, start your vehicle.
- Disconnect: After the vehicle starts, disconnect the smart jumper cable from the vehicle battery first, then from the jump starter.

Figure 6: Regular Jump Start Mode

Figure 7: Boost Mode for Totally Dead Batteries
5.2 Using as a Power Bank
The V10 Pro can charge various electronic devices:
- Connect your device's charging cable to one of the USB-A (Quick Charging or 5V/2.4A) outputs or the USB-C (IN/OUT 5V/3A 15W) port.
- For 15V/10A DC output, use a compatible cable to power car refrigerators, air compressors, etc.

Figure 8: Charging Multiple Devices
5.3 Using the LED Flashlight
The built-in 400 lumen LED flashlight has three modes:
- Normal: Press and hold the power button for 3 seconds to turn on.
- Strobe: Press the power button once more to activate strobe mode.
- SOS: Press the power button again to activate SOS signaling mode.
- To turn off, press the power button one more time or hold it for 3 seconds.

Figure 9: LED Flashlight Modes
6. Safety Information
The VTOMAN V10 Pro incorporates 10 advanced safety technologies to ensure user protection and prevent damage to the device or vehicle:
- Spark-Proof Protection: Prevents sparks during connection.
- Reverse-Charge Protection: Prevents current from flowing back into the jump starter.
- Over-Current Protection: Safeguards against excessive current flow.
- Over-Charge Protection: Prevents battery overcharging.
- Reverse-Polarity Protection: Alerts and protects against incorrect clamp connections.
- High-Temperature Protection: Shuts down if internal temperature exceeds safe limits.
- Low-Temperature Protection: Ensures safe operation in cold conditions.
- Short-Circuit Protection: Prevents damage from short circuits.
- Over-Voltage Protection: Protects against excessive voltage.
- Over-Load Protection: Prevents damage from drawing too much power.

Figure 10: Advanced Safety Technologies
7. Maintenance
To ensure the longevity and optimal performance of your VTOMAN V10 Pro Jump Starter:
- Store the unit in its provided storage case when not in use.
- Recharge the unit periodically, even if not used, to maintain battery health. The unit has a 24-month long standby time, but regular checks are recommended.
- Keep the unit clean and dry. Avoid exposure to extreme moisture or direct sunlight for prolonged periods.

Figure 11: 24-Month Standby Time
8. Troubleshooting
Refer to the LED indicator on the smart jumper cable for common issues:
| LED Indicator | Operation |
|---|---|
| Green LED (solid) | The connection is correct, you can start the vehicle directly. |
| Red LED | Reverse connection, please correct the polarity of battery clamps. |
| Green LED (blinks) | The vehicle battery voltage is too low. Try to press "BOOST" button. When Green LED illuminates (solid), then start the vehicle within 30s. |
| No Light | The vehicle battery may be damaged. First of all, make sure the correct connection. Try to press "BOOST" button. When Green LED illuminates (solid), then start the vehicle within 30s. |
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | JS-391 |
| Peak Output Current | 4500 Amps |
| Battery Cell Composition | Lithium Polymer |
| Voltage | 12 Volts |
| Product Dimensions | 1.3"D x 2.6"W x 8.8"H |
| Item Weight | 0.45 Kilograms (15.8 ounces) |
| USB-C Input/Output | 5V/3A 15W |
| USB-A Output 1 | 5V/2.4A |
| USB-A Output 2 (Quick Charge) | 5V/9V/12V |
| DC Output | 15V/10A |
| Flashlight | LED (3 modes: Solid, Strobe, SOS) |
| Operating Temperature | -4°F to 140°F (-20°C to 60°C) |
10. Warranty and Support
The VTOMAN V10 Pro Jump Starter comes with an 18-month warranty and lifetime technical support. For any questions or assistance, please contact our dedicated customer service team.
Contact Information:
- Email: support@vtoman.com
Additional support resources may be available on the official VTOMAN website.
Official Product Videos
VTOMAN V10 Pro 4500A Portable Jump Starter Overview
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