Introduction
Thank you for choosing the WORKPRO Mini Cordless Portable Air Compressor. This compact and versatile device is designed for convenient inflation of various items such as car tires, motorcycle tires, bicycle tires, and sports balls. It features a powerful 140 PSI maximum pressure, an intuitive LED display, and additional functions like an emergency light and power bank. Please read this manual thoroughly before use to ensure safe and optimal operation.
Safety Instructions
- Always wear eye protection when operating the air compressor.
- Keep children and pets away from the operating area.
- Do not operate the compressor in wet conditions or near flammable liquids or gases.
- Ensure the air hose is securely connected to the valve before starting inflation.
- Do not over-inflate. Always refer to the recommended pressure for the item being inflated. The automatic stop function helps prevent over-inflation.
- This compressor is not intended for inflating large vehicle tires (e.g., trucks, trailers, industrial vehicles) or high-volume items.
- Do not leave the compressor unattended during operation.
- If the compressor becomes excessively hot, turn it off and allow it to cool down before resuming use.
- Store the compressor in a dry, cool place away from direct sunlight.
Package Contents
Verify that all items are present in the package:
- 1x WORKPRO Mini Cordless Portable Air Compressor (8V)
- 1x USB Type-C Charging Cable
- 1x Air Hose
- 4x Inflation Nozzles (for car, bicycle, ball, etc.)
- 1x Storage Bag
- 1x User Manual

Image: The WORKPRO Mini Cordless Portable Air Compressor shown with all its accessories, including the air hose, USB-C cable, various nozzles, and storage bag.
Product Overview
The WORKPRO Mini Cordless Portable Air Compressor is designed for ease of use and portability.
Key Features:
- Compact and Lightweight: Measures 10.5 x 7.3 x 3.5 cm and weighs only 270g, making it highly portable.
- High Pressure Output: Delivers up to 140 PSI (9.78 Bar) maximum pressure.
- Multiple Inflation Modes: Features preset modes for bicycle, motorcycle, and ball, plus a free mode.
- Automatic Stop: Automatically stops inflation once the preset pressure is reached.
- LED Display: High-definition LED screen shows real-time pressure, selected mode, and battery level.
- Emergency Lighting: Integrated LED light with three modes: steady, SOS, and flashing.
- Power Bank Function: Can be used to charge other devices via its Type-C USB port.

Image: The compact size of the WORKPRO air compressor, measuring 10.5 cm in length, 7.3 cm in width, and 3.5 cm in height, with a weight of 270g.

Image: Close-up of the LED display showing pressure units (PSI, BAR, KPA), battery indicator, and inflation modes (bicycle, motorcycle, ball).
Setup
1. Charging the Compressor
- Connect the provided USB Type-C charging cable to the compressor's charging port.
- Connect the other end of the cable to a suitable USB power adapter (not included) or a power bank.
- The LED display will indicate the charging status. A full charge typically takes 1.5 to 3 hours.
- Ensure the compressor is fully charged before first use for optimal performance.

Image: The WORKPRO air compressor being charged via its Type-C USB port, showing battery and charging time information.
2. Attaching the Air Hose and Nozzle
- Screw the air hose securely onto the compressor's air outlet.
- Select the appropriate inflation nozzle for the item you wish to inflate.
- Screw the selected nozzle onto the free end of the air hose.
Operating Instructions
1. Powering On/Off
- Press and hold the power button (WORKPRO logo button) for 2-3 seconds to turn the compressor on.
- The LED display will light up, showing the current pressure and default mode.
- To turn off, press and hold the power button again. The compressor will also automatically turn off after 90 seconds of inactivity to save energy.
2. Selecting Units and Modes
- Unit Selection: Briefly press the 'O' button (circle icon) to cycle through pressure units: PSI, BAR, KPA.
- Mode Selection: Briefly press the 'M' button (mode icon, usually a bicycle/motorcycle/ball symbol) to switch between preset modes: Bicycle, Motorcycle, Ball, and Free Mode.

Image: The compressor display illustrating the three preset inflation modes: Ball (4-16 PSI), Bicycle (3-140 PSI), and Motorcycle (1.8-3.0 BAR).
3. Setting Desired Pressure
- In any mode, use the '+' and '-' buttons to adjust the target pressure.
- The adjustable range is 3-140 PSI (or equivalent in BAR/KPA).
- For preset modes, the device will suggest a default pressure, which can be adjusted.
4. Inflation Process
- Connect the nozzle securely to the item's valve.
- The display will show the current pressure of the item.
- Press the power button once to start inflation.
- The compressor will automatically stop once the preset target pressure is reached.
- Disconnect the nozzle from the item and then from the air hose.

Image: The WORKPRO air compressor inflating a bicycle tire, highlighting its rapid inflation capability of 140 PSI max pressure and 12 L/min airflow.

Image: Examples of various applications for the compressor, including inflating balls, swimming floats, bicycles, and motorcycles, with corresponding nozzle types.
5. Using the Emergency Light
- Briefly press the light button (sun icon) to turn on the steady LED light.
- Press again to switch to SOS flashing mode.
- Press a third time for rapid flashing mode.
- Press a fourth time to turn off the light.

Image: The compressor's emergency light function, demonstrating three modes: steady light, SOS signal, and flashing light, useful for nighttime or roadside emergencies.
6. Using as a Power Bank
- Connect your device (e.g., smartphone) to the compressor's Type-C USB port using your device's charging cable.
- The compressor will begin charging your device. This function is intended for emergency charging.
Maintenance
- Cleaning: Wipe the compressor's exterior with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the compressor 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, charge the compressor at least once every three months, even if not in use. Avoid fully discharging the battery frequently.
- Hose and Nozzles: Inspect the air hose and nozzles regularly for any signs of wear or damage. Replace if necessary.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor does not turn on. | Low battery. | Charge the compressor fully. |
| Compressor does not turn on. | Power button not held long enough. | Press and hold the power button for 2-3 seconds. |
| Inflation is slow or ineffective. | Air hose or nozzle not securely connected. | Ensure all connections are tight. |
| Inflation is slow or ineffective. | Incorrect nozzle used. | Select the correct nozzle for the item. |
| Compressor stops unexpectedly. | Target pressure reached. | This is normal operation. Disconnect the hose. |
| Compressor stops unexpectedly. | Overheating. | Turn off the compressor and allow it to cool down for at least 15-20 minutes. |
| Display is not clear. | Protective film still on screen. | Remove the protective film from the LED display. |
Specifications
| Feature | Specification |
|---|---|
| Model Number | W125364A |
| Brand | WORKPRO |
| Voltage | 8 Volts |
| Max Pressure | 140 PSI (9.78 Bar) |
| Air Flow Rate | 12 Liters per minute |
| Battery Type | 1 Lithium-ion (included) |
| Charging Port | USB Type-C |
| Product Dimensions (L x W x H) | 10.5 x 7.3 x 3.5 cm |
| Product Weight | 400 grams (including battery) |
| Material | Plastic |
| Special Features | Portable, Multifunctional (LED light, Power Bank) |
| Recommended Uses | Tire inflation, Ball inflation |
Warranty and Support
WORKPRO products are manufactured to high-quality standards. For warranty information or technical support, please refer to the warranty card included in your package or contact WORKPRO customer service through their official website or the retailer where the product was purchased. Please retain your proof of purchase for warranty claims.