UTRAI JSTAR-4

UTRAI Portable Car Jump Starter User Manual

Model: JSTAR-4

1. Introduction

Thank you for choosing the UTRAI Portable Car Jump Starter. This device is designed to provide a reliable solution for jump-starting vehicles with dead batteries, as well as serving as a portable power bank for your electronic devices. Its compact design and multi-functional features make it an essential tool for any vehicle owner. Please read this manual thoroughly before using the product to ensure safe and optimal performance.

UTRAI Portable Car Jump Starter with smart clamps and carrying case

Image 1.1: The UTRAI Portable Car Jump Starter, including the main unit, smart clamps, and a compact carrying case.

Package Contents:

Contents of the UTRAI Jump Starter package including the main unit, smart clamps, USB cable, and carrying case.

Image 1.2: All items included in the UTRAI Portable Car Jump Starter package.

2. 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.

Diagram showing 7 protection features of the smart clip: Overheating, Overvoltage, Short circuit, Reverse Connection, Over discharge, Overload, Overcurrent.

Image 2.1: The smart clamps feature 7 protection mechanisms for safe operation, including protection against overheating, overvoltage, short circuits, reverse connection, over-discharge, overload, and overcurrent.

3. Product Overview

Familiarize yourself with the components and features of your UTRAI Jump Starter.

Main Unit Features:

UTRAI Jump Starter showing wireless charging and USB output ports.

Image 3.1: The UTRAI Jump Starter functions as a power bank, offering 10W fast wireless charging and two USB output ports for wired charging.

UTRAI Jump Starter with LED light modes: Normal, Strobe, SOS.

Image 3.2: The integrated LED flashlight offers three modes: Normal illumination, Strobe for signaling, and SOS for emergencies.

4. Setup

4.1 Initial Charging

Before first use, fully charge the UTRAI Jump Starter. It comes partially charged, but a full charge ensures maximum performance and battery longevity.

  1. Connect the provided USB charging cable to the USB-C/DC input port on the jump starter.
  2. Connect the other end of the USB cable to a USB wall adapter (not included) or a powered USB port.
  3. The LED display will show the charging progress. Charge until the display indicates 100%.

A full charge typically takes several hours. It is recommended to recharge the unit every 3-6 months, even if not used, to maintain battery health.

5. Operating Instructions

5.1 Jump Starting a Vehicle

Ensure the jump starter is at least 50% charged before attempting to jump start a vehicle.

  1. Connect Smart Clamps to Unit: Fully insert the blue plug of the smart clamps into the jump start port on the UTRAI unit. Ensure a secure connection.
  2. Connect Clamps to Battery:
    • Connect the RED positive (+) clamp to the positive (+) terminal of the vehicle's battery.
    • Connect the BLACK negative (-) clamp to the negative (-) terminal of the vehicle's battery.

    The LED display on the smart clamp will show the battery voltage and indicate readiness.

  3. Start Vehicle: Once the smart clamp indicates a ready state (e.g., solid green light or appropriate voltage display), start your vehicle's engine.
  4. Remove Clamps: As soon as the vehicle starts, immediately remove the smart clamps from the vehicle battery terminals, then disconnect the smart clamps from the jump starter unit.
Four step diagram showing how to use the UTRAI Jump Starter: 1. Insert smart clamp plug. 2. Connect clamps to battery. 3. Start vehicle. 4. Remove clamps.

Image 5.1: Step-by-step guide for jump starting a vehicle using the UTRAI Jump Starter.

UTRAI Jump Starter connected to a car battery in an engine bay, showing 2500A Peak Current, 12 Volt, 8.0L Gas, 7.5L Diesel compatibility.

Image 5.2: The UTRAI Jump Starter connected to a vehicle battery, demonstrating its capability to start vehicles with up to 8.0L gas or 7.5L diesel engines with 2500A peak current.

5.2 Using as a Power Bank

The UTRAI Jump Starter can charge various electronic devices.

USB Charging:

Wireless Charging:

5.3 Using the LED Flashlight

The integrated LED flashlight has three modes:

  1. Press the Power Button once to turn on the flashlight (Normal mode).
  2. Press the Power Button again to switch to Strobe mode.
  3. Press the Power Button a third time to switch to SOS mode.
  4. Press the Power Button a fourth time to turn off the flashlight.

6. Maintenance

6.1 Recharging the Unit

To ensure the longevity and readiness of your jump starter, it is crucial to recharge it after each use, especially after jump-starting a vehicle. If the unit is not used frequently, recharge it every 3-6 months to maintain optimal battery health.

6.2 Storage

6.3 Cleaning

Wipe the unit with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.

7. Troubleshooting

ProblemPossible CauseSolution
Unit will not turn on / LED display is blank.Battery is completely discharged.Recharge the jump starter unit fully.
Vehicle does not start after connecting.
  • Incorrect clamp connection.
  • Vehicle battery is severely damaged.
  • Jump starter battery is too low.
  • Engine size exceeds jump starter capacity.
  • Ensure clamps are connected correctly (+ to +, - to -).
  • Check the smart clamp display for error codes.
  • Recharge the jump starter.
  • Verify your vehicle's engine size against the product specifications (Max 8.0L Gas / 7.5L Diesel).
Smart clamp displays an error code (e.g., "ERR", "VOL").
  • Reverse polarity connection.
  • Short circuit detected.
  • Over-discharge or over-voltage.
  • Disconnect clamps and reconnect correctly.
  • Check for any metal objects bridging the clamps or battery terminals.
  • Ensure the jump starter is adequately charged.
  • Refer to the smart clamp's specific error indicators for detailed meaning (if available in a more detailed manual).
USB charging or wireless charging not working.
  • Jump starter battery is low.
  • Device not compatible with wireless charging.
  • Device not properly placed on wireless pad.
  • Cable issue.
  • Recharge the jump starter.
  • Ensure your device supports Qi wireless charging.
  • Adjust device position on the wireless pad.
  • Try a different USB cable.

8. Specifications

FeatureDetail
ModelJSTAR-4
Peak Current2500 Amps
Battery TypeLithium Polymer
Start Voltage12V
Engine Compatibility (Gas)Up to 8.0 Liters
Engine Compatibility (Diesel)Up to 7.5 Liters
Product Dimensions8.2 x 3.3 x 1.1 inches
Item Weight2.82 pounds
USB Output5V/2.1A (standard USB ports)
Wireless Charging Output10W

9. Warranty & Support

9.1 Product Guarantee

The UTRAI Portable Car Jump Starter (Model JSTAR-4) comes with a 12-month product guarantee from the date of purchase. This warranty covers manufacturing defects and ensures the product performs as described under normal use. Please retain your proof of purchase for warranty claims.

9.2 Customer Support

For any questions, technical assistance, or warranty claims, please contact UTRAI customer support through the retailer's platform where you purchased the product or visit the official UTRAI website for contact information. Our team is dedicated to providing prompt and helpful assistance.

You can find more information and support resources by visiting the UTRAI Store on Amazon.

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