1. Introduction
Thank you for choosing the suitu ST-5536 Wireless Car Air Compressor Pump. This portable electric inflator is designed for convenient and efficient inflation of various items, including car tires, motorcycle tires, bicycle tires, and inflatable balls. Featuring a digital pressure display, preset pressure function, and automatic shut-off, it ensures precise and safe inflation. Please read this manual thoroughly before use to ensure proper operation and maintenance.
2. Package Contents
Please check the package for the following items:
- Main unit (Wireless Air Pump) x 1
- 4-piece inflation nozzle set x 1
- Type-C charging cable x 1
- Instruction manual x 1
- Storage bag x 1
- Color box x 1

Image: ST-5536 Wireless Air Pump with included accessories.
3. Product Features
- Wireless and Portable: Compact design for easy carrying and use anywhere.
- High-Capacity Battery: Equipped with built-in 18650 batteries (7.4V/11.1V options) for extended use.
- Digital Display: Clear digital pressure display for real-time monitoring and precise settings.
- Preset Pressure & Auto Shut-off: Set your desired pressure, and the pump will automatically stop when reached.
- Multi-purpose Inflation: Suitable for car tires, motorcycle tires, bicycle tires, and various inflatable balls.
- Integrated Lighting: Features lighting and flashing light functions for use in low-light conditions or emergencies.
- Fast Charging: Convenient Type-C charging interface (5V/1A).
- Efficient Inflation: Powered by a high-speed motor and alloy pump for quick inflation.
- Smart Chip: Intelligent control for automatic and accurate inflation.

Image: The ST-5536 is versatile, inflating car, motorcycle, and bicycle tires, as well as sports balls.

Image: Diagram illustrating the internal smart chip, high-speed motor, alloy pump, and Type-C charging interface.
4. Specifications
| Parameter | Value |
|---|---|
| Product Name | Wireless Air Pump |
| Product Brand | suitu |
| Product Model | ST-5536 |
| Product Material | ABS |
| Dimensions | 55 x 55 x 218 mm |
| Battery Capacity | (2*2000mAh) or (3*2000mAh) 5C rate 11.1V |
| Operating Voltage | 7.4V / 11.1V |
| Piston Diameter | 19 mm |
| Product Power | 60W |
| Accuracy | ±1.5 psi |
| Air Volume | 20 L/min |
| Continuous Working Time | 8-10 minutes |
| Inflation Pressure Range | 3-150 psi |
| Inflation Flow Rate | 15 L/min |
| Inflation Rate (Example) | 195/65/R15 tires 0-36psi in 7:10s ±5s |
| Inflation Noise | ≤80dB (at 1M test distance) |
| Charging Input | Type-C, 5V/1A ±0.1A |
| Operating Temperature | -20℃ to 60℃ |
5. Safety Information
- Do not leave the inflator unattended during operation.
- Keep out of reach of children.
- Do not operate in wet conditions or immerse in water.
- Avoid prolonged continuous operation to prevent overheating. Allow the device to cool down after 8-10 minutes of continuous use.
- Ensure the correct nozzle is used for the item being inflated.
- Always check the manufacturer's recommended pressure for the item you are inflating.
- Do not point the inflation nozzle at people or animals.
- Store in a cool, dry place when not in use.
6. Setup
6.1 Initial Charging
Before first use, fully charge the air compressor pump. Connect the provided Type-C charging cable to the charging port on the device and plug the other end into a compatible 5V/1A USB power adapter (not included).

Image: The ST-5536 being charged via its Type-C port.
6.2 Attaching the Inflation Hose and Nozzle
- Screw the inflation hose securely onto the air outlet of the main unit.
- Select the appropriate nozzle from the 4-piece set for the item you wish to inflate.
- Attach the selected nozzle to the free end of the inflation hose.
7. Operation
7.1 Powering On/Off
Press and hold the power button (usually the orange button) to turn the device on or off. The digital display will illuminate.
7.2 Selecting Inflation Mode
The device typically has multiple preset modes for different items (car, motorcycle, bicycle, ball). Use the mode selection button (refer to the device interface, often indicated by icons) to cycle through these modes. Each mode has a default pressure setting, which can be adjusted.

Image: The inflator can be used for car tires, motorcycle tires, bicycle tires, and basketballs.
7.3 Setting Target Pressure
Once a mode is selected, the current pressure or a default preset pressure will be displayed. Use the '+' and '-' buttons (if available) to adjust the target pressure to your desired PSI. The device supports a pressure range of 3-150 psi.

Image: The device allows one-click preset tire pressure and automatically stops when full.
7.4 Starting and Stopping Inflation
- Connect the nozzle firmly to the valve of the item to be inflated. The display will show the current pressure.
- Press the power/start button to begin inflation. The pump will operate, and the display will show the increasing pressure.
- The pump will automatically stop once the preset target pressure is reached.
- To manually stop inflation at any time, press the power/start button again.
- Disconnect the nozzle from the valve.

Image: The ST-5536 actively inflating a car tire, displaying the current pressure.

Image: Visual representation of the ST-5536 inflating a car tire, illustrating air flow.
7.5 Using the LED Light
The device is equipped with a built-in LED light. Short press the light button (if separate, or a specific combination with the power button) to turn on the steady light. Press again to activate the flashing light function (for emergencies), and a third press to turn it off.
8. Charging
When the battery level indicator on the display shows low battery, recharge the device using the provided Type-C cable. Connect the cable to the inflator's Type-C port and a 5V/1A USB power source. The battery indicator will show charging status and full charge. Charging time may vary depending on the power source and remaining battery level.
9. Maintenance
9.1 Cleaning
Wipe the exterior of the device with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners. Ensure no water enters the charging port or air outlet.
9.2 Storage
Store the air compressor pump and its accessories in the provided storage bag in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for an extended period, charge the device every 3-6 months to maintain battery health.
10. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Low battery; Device malfunction | Charge the device fully; Contact customer support if issue persists. |
| No inflation or slow inflation | Hose/nozzle not securely attached; Incorrect pressure setting; Item valve blocked; Low battery | Ensure all connections are tight; Check and adjust preset pressure; Inspect item valve; Recharge device. |
| Inaccurate pressure reading | Loose connection; Sensor issue | Ensure hose is tightly connected; Compare reading with a known accurate gauge; Contact support if consistently inaccurate. |
| Device overheats and shuts off | Prolonged continuous use | Allow the device to cool down for at least 15-20 minutes before resuming operation. |
11. User Tips
- Pre-check Pressure: Always check the current pressure of your tire or inflatable item before starting to inflate.
- Know Your PSI: Familiarize yourself with the recommended PSI for your specific tires or items to avoid over-inflation. This information is usually found on tire sidewalls, vehicle door jambs, or item manuals.
- Charge Regularly: For optimal performance, keep your inflator charged, especially before long trips or anticipated use.
- Secure Connections: A tight connection between the hose, nozzle, and valve is crucial for efficient inflation and accurate readings.
- Monitor During Inflation: Although the device has auto shut-off, it's good practice to monitor the inflation process, especially for sensitive items.
12. Warranty and Support
This product comes with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please refer to the contact information provided by your retailer or the official suitu website. Please retain your proof of purchase for warranty claims.





