1. Introduction
This manual provides essential instructions for the safe and effective operation, maintenance, and troubleshooting of your Gonlylai Portable Air Compressor. This device is designed for inflating car tires, motorcycle tires, bicycle tires, and sports balls. It features a digital pressure gauge, LED light, and an automatic shut-off function for convenience and precision.
Please read this manual thoroughly before using the product and retain it for future reference.
2. Safety Information
- Always ensure the inflator is fully charged before use to avoid interruptions.
- Do not leave the inflator unattended during operation.
- Keep the device away from children and pets.
- Avoid exposing the inflator to extreme temperatures, direct sunlight, or moisture.
- Do not attempt to disassemble or modify the device. Contact customer support for repairs.
- Ensure the correct pressure unit (PSI, BAR, KPA, KG/CM²) is selected for your item to prevent over-inflation.
- After prolonged use, the inflation hose and nozzle may become hot. Handle with care.
3. Package Contents
Verify that all items are present in your package:
- Gonlylai Portable Air Compressor
- Inflation Hose
- Various Nozzle Adapters (e.g., Presta valve adapter, ball needle, swimming ring nozzle)
- USB Charging Cable
- Storage Bag
- User Manual

Image: The Gonlylai Portable Air Compressor shown with its inflation hose, various nozzle adapters for different items, a USB charging cable, and a storage bag.
4. Product Overview and Controls
Familiarize yourself with the device's components and control panel.

Image: A detailed diagram illustrating the control panel of the air compressor, highlighting the digital display and various buttons.
- Digital Display: Shows current pressure, preset pressure, battery level, and selected mode.
- Power Button (Center): Press and hold for 3 seconds to turn on/off. Click to start/stop inflation.
- Mode Button (Left): Click to cycle through preset inflation modes (Car, Motorcycle, Bicycle, Ball, Manual). Long press to switch pressure units (PSI, BAR, KPA, KG/CM²).
- Increase/Decrease Buttons (+/-): Adjust the preset pressure value.
- SOS/Light Button (Bottom): Activates the LED light. Cycle through Flash Mode, Lighting Mode, and SOS Mode.
5. Setup
- Charge the Device: Before first use, fully charge the air compressor using the provided USB cable and a compatible power adapter. The battery indicator on the display will show charging status.
- Attach Inflation Hose: Screw the inflation hose securely into the air outlet port on the top of the compressor.
- Select Nozzle: Choose the appropriate nozzle adapter for the item you wish to inflate (e.g., Schrader valve for car/bike tires, needle for balls, Presta adapter for certain bike tires). Attach it to the end of the inflation hose.
6. Operating Instructions
Follow these steps for inflation:
Image: A visual guide demonstrating the four simple steps to operate the air compressor: connect, power on, set pressure, and inflate.
- Connect to Item: Securely connect the nozzle adapter to the valve of the item you want to inflate. The display will show the current pressure.
- Power On: Press and hold the Power Button for 3 seconds to turn on the compressor.
- Select Mode and Set Pressure:
- Press the Mode Button to cycle through preset modes (Car, Motorcycle, Bicycle, Ball, Manual). Each mode has a default pressure.
- Use the '+' and '-' buttons to adjust the desired pressure. Refer to your item's recommended pressure.
- Long press the Mode Button to switch between pressure units (PSI, BAR, KPA, KG/CM²).
- Start Inflation: Press the Power Button once to begin inflation. The compressor will automatically stop when the preset pressure is reached.
- Disconnect: Carefully disconnect the nozzle from the item's valve. Some air may escape during disconnection, which is normal.
6.1. Inflation Modes and Default Pressures
Image: A visual representation of the five available inflation modes (Manual, Car, Motorcycle, Bicycle, Ball) with their respective default pressure settings and adjustable ranges.
- Manual Mode: Default 35 PSI (Adjustable Range: 3-150 PSI / 0.2-10.3 BAR)
- Car Mode: Default 2.5 BAR (Adjustable Range: 1.8-3.5 BAR)
- Motorcycle Mode: Default 2.4 BAR (Adjustable Range: 1.8-3.0 BAR)
- Bicycle Mode: Default 45 PSI (Adjustable Range: 30-65 PSI)
- Ball Mode: Default 8 PSI (Adjustable Range: 4-16 PSI)
6.2. Using the LED Light and Power Bank Function
Image: The air compressor demonstrating its LED light function, useful for car breakdowns or as a night light, and its capability to charge other devices via USB.
- LED Light: With the device on, press the SOS/Light Button to cycle through Flash Mode, Lighting Mode (steady light), and SOS Mode (flashing red light).
- Power Bank: The compressor can be used to charge other USB-powered devices. Connect your device to the USB output port on the compressor using a compatible cable.
7. Maintenance
- Cleaning: Wipe the exterior of the compressor with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the device and its accessories in the provided storage bag in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid leaving a USB cable plugged into the device when not actively charging another device, as this can slowly drain the battery. Recharge the device periodically if not used for extended periods.
- Hose and Nozzles: Inspect the inflation hose and nozzles regularly for any signs of wear or damage. Replace if necessary.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery; Power button not pressed correctly. | Charge the device fully; Press and hold the power button for 3 seconds. |
| Inflator not inflating. | Hose not securely connected; Nozzle not properly attached to valve; Preset pressure already reached. | Ensure all connections are tight; Check the item's current pressure on the display. |
| Inaccurate pressure reading. | Loose connection; Incorrect pressure unit selected. | Ensure hose and nozzle are securely connected; Long press Mode button to select correct unit. |
| Device stops unexpectedly. | Battery low; Overheating; Preset pressure reached. | Recharge the device; Allow to cool down; Check if target pressure was met. |
9. Specifications
Image: A diagram illustrating the physical dimensions of the air compressor, showing its height (124mm), length (89mm), and width (52mm).
- Brand: Gonlylai
- Model: Air Pump for Car
- Maximum Pressure: 150 PSI
- Power Source: Battery, Electric
- Battery Capacity: 4000 mAh
- Airflow Rate: Approximately 38 L/Min
- Item Dimensions (LxWxH): 6.5 x 3.5 x 3 inches (approx. 165 x 89 x 76 mm)
- Item Package Dimensions (LxWxH): 6.89 x 6.73 x 3.35 inches
- Package Weight: 0.59 Kilograms
- Color: Black
- UPC: 762949114773
9.1. Inflation Performance Examples
Image: A graphic illustrating the inflation speed of the compressor, showing that it can inflate a 185/65/R15 car tire from 25 PSI to 36 PSI in approximately 1 minute.
- Inflates a standard car tire (255/55 R18) from 1.75 bar to 2.50 bar in approximately 5 minutes.
- Can inflate up to 5 car tires, 8 motorcycle tires, 12 bicycle tires, or 40 sports balls on a single full charge.
10. Warranty and Support
For warranty information, please refer to the documentation included with your purchase or contact the seller directly. Specific warranty terms may vary.
If you encounter any issues or have questions regarding your Gonlylai Portable Air Compressor, please contact the seller or manufacturer's customer support for assistance. Provide your product model number and purchase date when seeking support.