1. Introduction
Thank you for choosing the JN058 Portable Wireless Tire Inflator. This device is a versatile and compact air compressor designed for convenient inflation of various items, including car, motorcycle, bicycle tires, and sports balls. It features a digital LCD display for accurate pressure readings, an integrated LED light for nighttime use, and a power bank function for charging mobile devices. Please read this manual carefully before use to ensure proper operation and to maximize the product's lifespan.
2. Package Contents
Please check the package to ensure all items are present:
- 1 x Portable Inflator Unit
- 1 x Inflatable Tube
- 4 x Air Nozzles (various types for different applications)
- 1 x USB Charging Cable (Type-C)
- 1 x User Manual
- 1 x Storage Bag

3. Product Features
- Handheld Design: Compact and portable for easy use.
- Preset Tire Pressure: Set desired pressure, and the inflator will automatically stop when reached.
- Digital LCD Display: Provides accurate pressure readings in multiple units (psi, bar, kpa, kg/cm²).
- 5 Operation Buttons: Intuitive control for various functions.
- Fast Inflation: Equipped with a 19mm diameter metal cylinder for efficient air delivery (45L/min max).
- LED Light & SOS Flashing Lamp: For convenient use at night or in emergency situations.
- Power Bank Function: 5V/1A USB output to charge mobile devices.
- Durable Construction: Designed for fast heat dissipation and long service life.


4. Specifications
| Attribute | Value |
|---|---|
| Model Number | JN058 / 30304 |
| Item Type | Portable Inflator |
| Application | Car, Motorcycle, Bicycle, Ball inflation, Outdoor Camping |
| Cylinder Diameter | 19mm |
| Color | Black |
| Power | 60W |
| Air Flow | 45L/min max |
| Working Voltage | 7.4V-11.1V |
| Current | 6A Max |
| Battery Capacity | 3 x 2000mAh (6000mAh total) Li-battery |
| Pressure Range | 0-150psi |
| Pressure Units | psi / bar / kpa / kg/cm² |
| Charging Input | Type-C 5V / 1A (supports 12V cigar lighter cable input, not included) |
| Charging Time | Approx. 4.5 hours |
| Preset Modes | Car 2.5bar / Motorcycle 2.4bar / Bike 45psi / Ball 8psi |
| Display Style | Digital Display |
| Special Features | LED flashlight, SOS lamp, Power bank (5V/1A output) |
| Inflatable Tube Length | Approx. 10cm |
| Working Temperature | -20℃ ~ +60℃ |
| Inflation Time (approx.) | 7-8 minutes to inflate a type 195 tire from 0 to 2.5bar (fully charged) |
| Dimensions (approx.) | 17.00cm (H) x 8.40cm (W) x 5.40cm (D) |

5. Setup
- Charge the Inflator: Before first use, fully charge the inflator using the provided USB Type-C cable. Connect the cable to the inflator's Type-C port and a 5V/1A USB power adapter (not included). The display will indicate charging status. Charging takes approximately 4.5 hours.
- Attach Inflatable Tube: Screw the inflatable tube securely onto the air outlet port of the inflator.
- Select Appropriate Nozzle: Choose one of the four air nozzles based on the item you intend to inflate. Attach it to the end of the inflatable tube.


6. Operating Instructions
6.1 Power On/Off
- Press and hold the power button (usually the central button) to turn the inflator on or off.
6.2 Setting Desired Pressure
- Turn on the inflator. The digital LCD display will show the current pressure.
- Press the 'M' button (Mode button) to cycle through preset modes: Car, Motorcycle, Bicycle, Ball. Each mode has a default pressure value.
- Use the '+' and '-' buttons to adjust the desired pressure value. The display will show the target pressure.
- Press the unit button (often labeled with a symbol like 'U' or 'PSI/BAR') to switch between pressure units (psi, bar, kpa, kg/cm²).

6.3 Inflation Process
- Connect the inflatable tube with the selected nozzle to the valve of the item you wish to inflate. Ensure a secure connection to prevent air leakage.
- The display will show the current pressure of the item.
- Set your desired target pressure as described in Section 6.2.
- Press the power/start button to begin inflation. The inflator will automatically stop once the preset pressure is reached.
- Disconnect the nozzle from the item and the inflatable tube from the inflator.

6.4 Using the LED Light and SOS Function
- Press the light button (often depicted as a sun or lightbulb icon) once to turn on the LED flashlight.
- Press it again to activate the SOS flashing lamp mode.
- Press a third time to turn off the light.
6.5 Using as a Power Bank
- Connect your mobile device to the USB-A output port on the inflator using your device's charging cable.
- The inflator will provide 5V/1A output to charge your device.
7. Maintenance
- Cleaning: Wipe the inflator with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the inflator in a cool, dry place, away from direct sunlight and extreme temperatures. Use the provided storage bag to protect it from dust and damage.
- Battery Care: To prolong battery life, charge the inflator fully every 3 months if not in regular use. Avoid completely draining the battery for extended periods.
- Tube and Nozzles: Ensure the inflatable tube and nozzles are clean and free from debris before and after each use.
8. Troubleshooting
- Inflator does not turn on: Ensure the battery is charged. If not, connect it to a power source using the USB cable.
- Inflator does not inflate: Check if the inflatable tube and nozzle are securely connected to both the inflator and the item's valve. Ensure the desired pressure is set above the current pressure.
- Slow inflation: Ensure the battery is sufficiently charged. A low battery can affect performance.
- Automatic stop not working: Verify that the desired pressure is correctly set on the digital display.
- Overheating: The inflator is designed for continuous working time of 10 minutes maximum. If used for longer, it will automatically stop. Allow it to cool down for about 15 minutes before resuming operation.
- Not suitable for trucks: This inflator is not designed for trucks or other vehicles with high-pressure tires. Using it for such applications may damage the device or lead to inefficient inflation.
9. User Tips
- Always check the recommended tire pressure for your vehicle or item before inflating. This information is usually found on a sticker inside the car door, in the owner's manual, or on the item itself.
- For optimal performance, ensure the inflator is fully charged before a long trip or extended use.
- The power bank feature is useful for emergencies, but it's not intended as a primary charging solution due to the inflator's battery capacity being shared with its main function.
- Keep the various nozzles organized in the storage bag to avoid losing them.
10. Warranty and Support
This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty details, claims, or technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.