1. Introduction
This manual provides essential information for the safe and effective use of your onerbl AC-DC Adapter. This adapter is specifically designed as a replacement power supply for the ZGZUXO CZK-3668 Portable Air Compressor with a 5200 mAh rechargeable battery. Please read this manual thoroughly before use and retain it for future reference.
2. Important Safety Instructions
Always follow these basic safety precautions when using electrical products to reduce the risk of fire, electric shock, and injury.
- Read all instructions: Before using the adapter, read all instructions and cautionary markings on the adapter and the device it will power.
- Indoor use only: This adapter is designed for indoor use. Do not expose it to rain or moisture.
- Proper ventilation: Ensure adequate ventilation around the adapter. Do not cover it or place it in an enclosed space that could restrict airflow.
- Avoid damage: Do not operate the adapter if it has been damaged in any way. Inspect the cord and adapter housing for any signs of damage before each use.
- Correct voltage: Only connect the adapter to power outlets with the specified voltage (AC 100-240V).
- Disconnect when not in use: Unplug the adapter from the power outlet when not in use for extended periods.
- Keep away from children: This is not a toy. Keep out of reach of children.
- No user-serviceable parts: Do not attempt to open or repair the adapter. Refer all servicing to qualified service personnel.
3. Product Overview
The onerbl AC-DC Adapter converts standard AC wall power into the DC power required by your ZGZUXO CZK-3668 Portable Air Compressor. It features a barrel connector and is designed for reliable performance.

This image displays the onerbl AC-DC Adapter, a black power supply unit with a barrel connector, designed to replace the original charger for the ZGZUXO CZK-3668 Portable Air Compressor.
4. Setup
Follow these steps to set up your onerbl AC-DC Adapter:
- Inspect the adapter: Before connecting, visually inspect the adapter and its cable for any signs of damage.
- Connect to device: Insert the barrel connector of the adapter firmly into the charging port of your ZGZUXO CZK-3668 Portable Air Compressor.
- Connect to power outlet: Plug the AC plug of the adapter into a standard AC 100-240V electrical wall outlet.
- Verify connection: Ensure both connections are secure. The device's charging indicator (if available) should activate.
5. Operating Instructions
Once connected, the adapter will begin to power or charge your ZGZUXO CZK-3668 Portable Air Compressor.
- Charging: Allow sufficient time for the device's battery to fully charge. Refer to your air compressor's manual for specific charging times and indicators.
- Direct Power: If the device can operate directly from AC power without a charged battery, the adapter will supply the necessary power.
- Disconnecting: To disconnect, first unplug the adapter from the wall outlet, then remove the barrel connector from your device.
6. Maintenance
Proper care will extend the life of your adapter:
- Cleaning: Disconnect the adapter from power and the device before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or aerosols.
- Storage: Store the adapter in a cool, dry place when not in use. Avoid extreme temperatures.
- Cable care: Do not bend, twist, or crimp the power cord excessively. Avoid placing heavy objects on the cord.
7. Troubleshooting
If you encounter issues with your adapter, refer to the following common problems and solutions:
- Device not powering on or charging:
- Ensure the adapter is securely plugged into both the wall outlet and the device.
- Test the wall outlet with another device to confirm it is functional.
- Inspect the adapter cable and connectors for any visible damage.
- Note: Rechargeable batteries have a limited lifespan, typically 1 to 3 years. If the device's battery is damaged or at the end of its life, it may not accept a charge, even with a functional adapter. This is a battery issue, not an adapter issue.
- Adapter feels warm:
- It is normal for the adapter to feel slightly warm during operation. If it becomes excessively hot, disconnect it immediately and contact support.
- Ensure the adapter has adequate ventilation and is not covered.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | onerbl |
| Input Voltage | AC 100-240V, 50/61Hz (Worldwide AC Input) |
| Output Voltage | 5 Volts (DC) |
| Output Current | 5.2 Amps |
| Connector Type | Barrel Connector |
| Compatible Devices | ZGZUXO CZK-3668 CZK3668 Tire Inflator Portable Air Compressor 5200 mAh Rechargeable Battery |
| Special Feature | Short Circuit Protection |
9. Warranty and Support
This onerbl AC-DC Adapter has been tested to ensure great working condition. For any questions, technical support, or warranty inquiries, please contact the seller or manufacturer directly through your purchase platform. Please have your order details ready when contacting support.