1. Introduction
This manual provides instructions for the safe and efficient operation of your Teffim Portable Tire Inflator, Model CZK-3690. This device is designed for inflating various items including car tires, motorcycle tires, bicycle tires, and sports balls. It features a digital pressure gauge, multiple inflation modes, an integrated LED light, and power bank functionality.

Image 1: Teffim Portable Tire Inflator and included accessories.
2. Product Overview
2.1 Components
- Teffim Portable Tire Inflator Unit
- Inflation Hose with Valve Connector
- DC 12V Power Cable (9.8 feet)
- USB Charging Cable (USB-C input)
- 4 Nozzles/Adapters (for various inflation needs)
- Storage Bag
2.2 Key Features
- High-Capacity Battery: Equipped with a 10000 mAh rechargeable battery for extended use.
- Digital Pressure Gauge: Dual LCD displays show real-time and preset pressure values with 0.5 PSI accuracy.
- Automatic Shut-off: Stops inflation when desired pressure is reached to prevent over-inflation.
- 5 Personalized Settings: Pre-set modes for car, motorcycle, bicycle, sports balls, and manual mode.
- Dual Inflation Methods: Supports cordless inflation via battery or corded inflation via 12V DC car power.
- LED Light: Super-bright LED with 3 modes (constant, flashing red, SOS) for visibility and emergencies.
- Portable Power Bank: USB-A output allows charging of external devices like smartphones.
3. Setup
3.1 Charging the Device
Before first use, fully charge the tire inflator. Connect the USB charging cable to the USB-C input port on the device and to a compatible USB power adapter (not included). The battery indicator on the display will show charging progress.

Image 2: The inflator features a 10000mAh battery.
3.2 Attaching the Inflation Hose
Screw the inflation hose securely into the designated port on the top of the inflator unit. Ensure it is tightened to prevent air leakage during operation.

Image 3: The compact size of the Teffim inflator makes it highly portable.
4. Operating Instructions
4.1 Powering On/Off
- To power on, press and hold the power button (usually the central button) for a few seconds until the display illuminates.
- To power off, press and hold the power button again until the display turns off.
4.2 Selecting Inflation Mode
Press the 'M' button to cycle through the 5 personalized inflation modes: Car, Motorcycle, Bicycle, Sports Ball, and Manual. Each mode has a default preset pressure, which can be adjusted.

Image 4: The inflator offers 4 pre-set modes for various applications.

Image 5: The device can inflate car tires, motorcycle tires, bike tires, and sports balls.
4.3 Setting Target Pressure
After selecting a mode, use the '+' and '-' buttons to adjust the target pressure (PSI, KPA, BAR, or KG/CM²) to your desired level. The device will automatically save your custom setting for each mode.
4.4 Starting/Stopping Inflation
- Connect the inflation hose to the item's valve stem.
- Power on the device and select the appropriate mode and target pressure.
- Press the power button to begin inflation. The real-time pressure will be displayed.
- The inflator will automatically stop once the target pressure is reached.
- Disconnect the hose from the valve stem.

Image 6: Three simple steps to operate the Teffim inflator.

Image 7: The inflator demonstrates efficient inflation, taking a 195/55/R15 car tire from 27 PSI to 36 PSI in 1 minute.
4.5 Using the LED Light
The device features a super-bright LED light with 3 modes:
- Constant Light: For general illumination.
- Flashing Red Light: For warning or signaling.
- SOS Mode: For emergency signaling.
Press the light button (usually indicated by a sun/star icon) to cycle through the light modes.
4.6 Using as a Power Bank
The inflator can function as an emergency power bank. Connect your device (e.g., smartphone) to the USB-A output port using a compatible cable to charge it.

Image 8: The inflator serves as a power bank and features an LED flashlight.
5. Maintenance
- Keep the device clean and free from dust and debris.
- Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Ensure the battery is charged periodically, even when not in use, to maintain battery health.
- Inspect the inflation hose and connectors for any signs of wear or damage before each use.
6. Troubleshooting
6.1 Device Not Turning On
- Ensure the battery is sufficiently charged. Connect to power and try again.
- Press and hold the power button for the recommended duration (typically 3-5 seconds).
6.2 Slow Inflation or No Inflation
- Check that the inflation hose is securely connected to both the inflator and the item's valve stem.
- Verify that the correct inflation mode and target pressure are selected.
- Ensure the item's valve stem is not obstructed or damaged.
- If using the 12V DC cable, ensure your vehicle's engine is running.
6.3 Inaccurate Pressure Reading
- Ensure the hose is properly attached and there are no leaks.
- Calibrate the device if a calibration option is available (refer to specific device instructions if applicable).
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Teffim |
| Model Name | CZK-3690 |
| Voltage | 12 Volts (DC) |
| Power Source | Battery Powered, Corded Electric |
| Battery Capacity | 10000 mAh |
| Max Pressure | 150 PSI |
| Noise Level | 50 Decibels |
| Hose Length | 10 Feet |
| Item Weight | 1.69 pounds (767 Grams) |
| Product Dimensions | 2.64 x 5.16 x 8.19 inches |
| Special Features | Pressure Detection, LED Light, Power Bank Functionality |
8. Safety Information
- Do not leave the inflator unattended during operation.
- Keep out of reach of children.
- Avoid over-inflating items; always refer to the manufacturer's recommended pressure.
- Do not operate the device in wet conditions or near flammable liquids/gases.
- If the device becomes excessively hot, turn it off and allow it to cool before resuming use.
9. Warranty and Support
For warranty information or technical support, please refer to the documentation included with your product or contact Teffim customer service. Contact details can typically be found on the product packaging or the official Teffim website.





