1. Product Overview
The Xiaomi Mijia Air Pump 2D is a portable electric air compressor designed for convenient and efficient inflation of various items, including bicycle tires, car tires, motorcycle tires, scooter tires, and sports balls. It features a digital display, pre-set inflation modes, and a compact design for easy portability.
Image: The Xiaomi Mijia Air Pump 2D, a portable electric air compressor.
2. Package Contents
Please check the box for the following items:
- Inflatable Treasure x1 (Xiaomi Mijia Air Pump 2D)
- Quick connect valve conversion head x1
- Air needle x1
- French gas nozzle conversion head x1
- Instruction manual x1
- Storage bag x1
Image: Visual representation of the items included in the product package.
3. Setup and Initial Use
- Charge the Device: Before first use, fully charge the air compressor using the provided Type-C charging cable. The charging time is approximately 3 hours.
- Remove Air Hose: The air compressor will only turn on when the air hose is removed from its compartment.
- Attach Appropriate Nozzle: Select the correct air nozzle conversion head (quick connect valve, air needle, or French gas nozzle) for the item you wish to inflate and securely attach it to the air hose.
- Connect to Item: Securely connect the air hose with the attached nozzle to the valve of the item you intend to inflate.
Image: A hand connecting the air hose to a bicycle tire valve.
Image: A hand connecting the air hose to a car tire valve.
Image: The air pump connected to a basketball for inflation.
4. Operating Instructions
4.1 Power On/Off
The air compressor turns on automatically when the air hose is removed from its compartment. To turn it off, return the air hose to its compartment or press and hold the start/stop button.
4.2 Inflation Modes
The device features 6 pre-set inflation modes for various items, making it easy for novice operators. These modes include:
- Free mode
- Bicycle mode
- Motorcycle mode
- Car mode
- Scooter mode
- Ball mode
You can switch between modes using the control panel. In manual mode, you can adjust the preset pressure value within a range of 3-150 psi.
4.3 Digital Display and Controls
The integrated digital display shows the current pressure and allows you to monitor the inflation process. The control panel includes buttons for adjusting pressure, switching modes, and controlling the built-in light.
4.4 Inflation Process
- Once connected and the desired pressure is set (either via pre-set mode or manual adjustment), press the start button to begin inflation.
- The pump will automatically stop when the pre-set pressure is reached.
- The inflation speed is increased by approximately 25% compared to previous models, allowing for faster inflation. For example, it can fill one empty car tire (205/55 R16) from 0 to 2.5 bar in about 8 minutes under full charge.
Image: Visual guide to the 6 pre-set inflation modes, quick connect nozzle, preset pressure stop, light body, and enhanced lighting.
Image: Chart illustrating the 25% increase in inflation speed, showing 8 minutes to fill one empty tire compared to older models.
5. Maintenance
- Charging: Recharge the device when the battery indicator is low. Use a compatible 5V-2A charger and the Type-C cable.
- Storage: Store the air compressor in the provided storage bag when not in use to protect it from dust and damage. Keep it in a cool, dry place away from direct sunlight and extreme temperatures (-10℃ to 45℃).
- Cleaning: Wipe the exterior of the device with a soft, dry cloth. Do not use harsh chemicals or immerse the device in water.
6. Troubleshooting
If you encounter any issues, please refer to the following solutions:
Issue: The Air Compressor Does Not Turn On.
- Check whether the air hose is removed from its compartment. The air compressor can be turned on only when the air hose is removed from its compartment.
- Fully charge the air compressor and then attempt to turn it on.
Issue: The inflation speed is slow.
- Check whether the battery power is sufficient.
- Check whether the air hose is leaking.
- Check whether both ends of the air hose are securely connected.
- Check whether the inflated item is leaking.
Issue: The air compressor turns on but does not inflate.
- Check whether the battery power is sufficient.
- Check whether the current air pressure is higher than the preset value.
Issue: The preset pressure cannot be increased or decreased.
- Make sure the air compressor is set to the correct inflation mode. Manual mode allows you to adjust the preset value within a range of 3-150 psi.
Issue: The air compressor inflates normally but the displayed pressure is zero.
- The pressure of low-pressure inflatables including balloons is too low to measure accurately.
Issue: The air compressor has already turned off after connecting the air hose to a valve.
- Press and hold the start/stop button to turn the air compressor on again.
Issue: Air leaks out when connecting the air hose.
- Make sure the air hose is securely connected to both the compressor and the item's valve.
Issue: The battery level indicator on the display does not light up while charging.
- Replace the charging cable and adapter with safe and compliant ones, and try charging again.
7. Specifications
| Parameter | Value |
|---|---|
| Product Model | MJCQB07QWS |
| Battery Type | Lithium ion battery |
| Working Temperature | -10℃ ~ 45℃ |
| Storage Temperature | -10℃ ~ 45℃ |
| Work Noise | Below 80dB (A) at 1 meter |
| Charging Interface | Type-C |
| Sensor Accuracy | ± 1psi |
| Product Size (Bare machine, excluding trachea) | Approximately 123 x 75.5 x 45.8 mm |
| Net Weight | Approximately 490g |
| Inflation Pressure | 0.2-10.3 bar / 3-150 psi |
| Charging Temperature | 5℃ ~ 40℃ |
| Rated Capacity | 2000mAh (14.4Wh) |
| Rated Input | 5V = 2A |
| Charging Time | About 3 hours |
| Air Nozzle Size (Inner Diameter) - American | 6.9mm |
| Air Nozzle Size (Inner Diameter) - French | 6mm |
8. User Tips
- Pre-check Battery: Always ensure the air compressor has sufficient battery power before starting an inflation task, especially for larger items like car tires.
- Secure Connections: Double-check that all air hose connections and nozzle attachments are secure to prevent air leakage and ensure efficient inflation.
- Utilize Pre-set Modes: For common items like bicycle tires or sports balls, use the pre-set modes for quick and accurate inflation without manual pressure adjustment.
- Manual Mode for Precision: If inflating an item with specific pressure requirements not covered by pre-sets, use manual mode and carefully set the desired PSI.
- Keep it Handy: The compact size and included storage bag make it ideal for keeping in your car, backpack, or garage for emergencies or regular use.
9. Warranty and Support
Specific warranty details are not provided in the product information. For warranty claims, technical support, or further assistance, please refer to the contact information provided by your retailer or the official Xiaomi support channels.
