Introduction
Thank you for choosing the 70mai Car Air Compressor TP03. This compact and efficient tire inflator is designed to provide quick and convenient inflation for various items, including car tires, motorcycles, bicycles, balls, and inflatable toys. Featuring smart pressure preset and auto shut-off, it ensures precise and safe inflation every time.

The 70mai Car Air Compressor TP03 with its clear digital display.
Safety Information
- Read all instructions before use.
- Keep out of reach of children.
- Do not leave the compressor unattended while in operation.
- Ensure the power source is 12V DC.
- Avoid operating the compressor in wet conditions.
- Do not over-inflate items. Always refer to the manufacturer's recommended pressure.
- Allow the compressor to cool down after prolonged use to prevent overheating.
Package Contents
The 70mai Car Air Compressor TP03 package includes:
- 70mai Car Air Compressor TP03 unit
- Multiple nozzles (for car tires, bikes, motorcycles, balls, inflatable toys)
- User Manual (this document)

The compressor unit shown with its included accessory nozzles.
Product Overview
The 70mai Car Air Compressor TP03 features a compact design with an intuitive digital display and simplified button arrangement for ease of use. It includes a built-in LED light for convenience during nighttime operation.

Detailed view of the compressor's control panel and digital display.
Key Components:
- Digital Pressure Display
- Mode Selection Button (R)
- Pressure Unit Button (T)
- Increase Pressure Button (+)
- Decrease Pressure Button (-)
- Power Button (U)
- Inflation Hose Connector
- 12V DC Power Cable
- LED Light
Setup
- Connect Power: Plug the 12V DC power cable into your vehicle's cigarette lighter socket.
- Attach Hose: Screw the inflation hose securely onto the tire valve stem or attach the appropriate nozzle for other inflatables.
- Power On: Press the Power Button (U) to turn on the compressor. The digital display will light up.

Connecting the inflation hose to a car tire valve.
Operating Instructions
- Select Mode: Press the Mode Selection Button (R) to cycle through the 5 intelligent preset modes: Car, Motorcycle, Bike, Ball, or Custom.
- Set Pressure Unit: Press the Pressure Unit Button (T) to switch between KPA, BAR, and PSI units.
- Adjust Target Pressure: Use the Increase Pressure Button (+) and Decrease Pressure Button (-) to set your desired target pressure. The display will show the current pressure of the connected item.
- Start Inflation: Once the target pressure is set, the compressor will automatically start inflating.
- Auto Shut-off: The compressor will automatically stop once the target pressure is reached.
- Disconnect: Carefully disconnect the inflation hose from the valve stem.
- Power Off: Press the Power Button (U) to turn off the compressor.

Monitoring tire pressure on the digital display during inflation.
Using the LED Light:
The built-in LED light can be activated for convenience when operating in low-light conditions or at night. Refer to the specific button on the device for LED light activation (often integrated with the power button or a separate light icon).
Applications:
The 70mai TP03 is versatile and can be used for:
- Car tires
- Motorcycle tires
- Bicycle tires
- Sports balls (e.g., basketballs)
- Small inflatable toys (e.g., swimming rings)

Examples of items that can be inflated with the 70mai TP03.
Maintenance
- Cleaning: Wipe the compressor with a dry or slightly damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the compressor in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the hose and power cable are neatly coiled.
- Nozzle Care: Keep the various nozzles clean and free from debris to ensure proper function.
- Internal Components: The compressor is designed with a German PTFE piston ring and high-temperature resistant thickened copper wire for durability. No user-serviceable parts inside; do not attempt to disassemble.

Internal components of the 70mai TP03, highlighting its robust construction.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor does not turn on. | No power from 12V socket; faulty connection. | Check 12V power socket and cable connection. Ensure vehicle engine is running for sufficient power. |
| Compressor runs but no air inflates. | Hose not securely attached; valve stem blocked; incorrect nozzle. | Ensure hose is tightly screwed onto valve. Check valve for obstructions. Use correct nozzle for the item. |
| Inaccurate pressure reading. | Loose connection; sensor issue. | Ensure a tight connection. If problem persists, contact support. |
| Compressor overheats and shuts off. | Prolonged continuous use. | Allow the compressor to cool down for at least 10-15 minutes before resuming operation. |
Specifications
| Feature | Detail |
|---|---|
| Model | TP03 |
| Power Input | 12V DC |
| Airflow Rate | 32 L/min |
| Inflation Performance (Car Tire) | 30PSI to 35PSI in approx. 90 seconds |
| Preset Modes | Car, Motorcycle, Bike, Ball, Custom |
| Pressure Units | KPA, BAR, PSI |
| Special Features | Smart pressure preset, Auto shut-off, Built-in LED light |
| Internal Components | German PTFE piston ring, High temperature resistant thickened copper wire |
| Dimensions (L x W x H) | 25 cm x 21 cm x 7 cm (approx.) |
| Weight | 1.1 kg (approx.) |
| Origin | Mainland China |
User Tips
- Always check your vehicle's owner's manual or the sticker on the driver's side door jamb for recommended tire pressure.
- Inflate tires when they are cold for the most accurate readings.
- Keep the compressor's air intake clear of obstructions during operation.
- For optimal performance and longevity, avoid running the compressor continuously for more than 10-15 minutes.
- Ensure the 12V power source in your vehicle is capable of providing sufficient current for the compressor.
Warranty and Support
For warranty claims, technical support, or any product-related inquiries, please contact the seller or the official 70mai customer service. Keep your purchase receipt as proof of purchase.





