1. Introduction
This manual provides instructions for the safe and effective use of your onerbl AC-DC Adapter. This adapter is designed to provide power to compatible Bullseye Pro Max Digital Tire Inflators, allowing them to operate from a standard electrical outlet. It converts AC power from the wall into the DC power required by your device.
Important Note: This adapter functions as a power supply for operating your device. While it can facilitate battery charging if your device has built-in charging circuitry, it is not a standalone battery charger for the Bullseye Pro Max battery packs (e.g., 1745-BAT, 9475B-BAT) themselves. Please refer to your device's manual for specific battery charging instructions.
2. Important Safety Instructions
- Read all instructions before using the adapter.
- Do not expose the adapter to rain or moisture.
- Do not disassemble the adapter. Refer servicing to qualified personnel.
- Ensure the adapter's input voltage (100-240V AC) matches your local power supply.
- Use only with compatible devices as specified. Using with incompatible devices may cause damage.
- Keep the adapter away from heat sources and direct sunlight.
- Unplug the adapter from the power outlet when not in use for extended periods.
- This adapter features short circuit protection for enhanced safety.
3. Package Contents
Verify that your package contains the following item:
- 1 x onerbl AC-DC Adapter
4. Product Overview


The onerbl AC-DC adapter is a compact power supply unit featuring a standard Type A (2-pin North American) plug for wall outlets and a barrel connector output cable. It is designed for portability and ease of use.
5. Setup
- Identify the Power Port: Locate the DC input power port on your Bullseye Pro Max Digital Tire Inflator. This port is typically a circular barrel-type connector.
- Connect the Adapter: Insert the barrel connector of the onerbl AC-DC adapter's output cable firmly into the power port of your tire inflator.
- Plug into Power Outlet: Insert the two-prong plug of the AC-DC adapter into a standard 100-240V AC electrical wall outlet.
- Verify Connection: Ensure both connections are secure. Your device should now be receiving power from the adapter.

6. Operating Instructions
Once the onerbl AC-DC adapter is properly connected to your Bullseye Pro Max Digital Tire Inflator and a power outlet, your device will be powered by the adapter. You can then operate your tire inflator as usual, following the specific operating instructions provided with your Bullseye Pro Max device.
If your Bullseye Pro Max Digital Tire Inflator is designed to charge its internal battery when connected to an external power source, the adapter will facilitate this process. Observe your device's charging indicators to confirm battery charging status.
7. Maintenance
- Cleaning: Disconnect the adapter from the power outlet and your 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 wrapping the cable too tightly around the adapter to prevent damage to the cable or connectors.
- Inspection: Periodically inspect the adapter and its cable for any signs of damage, such as cuts, frayed wires, or bent pins. If damage is found, discontinue use and replace the adapter.
8. Troubleshooting
- Device not powering on:
- Ensure the adapter is securely plugged into both the wall outlet and your device.
- Check if the wall outlet is functional by plugging in another device.
- Verify that your device is compatible with this adapter (Bullseye Pro Max Digital Tire Inflator models 1745-BAT, 9475B-BAT).
- Inspect the adapter cable and connectors for any visible damage.
- Device battery not charging:
- This adapter is primarily a power supply. While it enables charging if your device supports it, it is not a dedicated battery charger.
- Refer to your Bullseye Pro Max Digital Tire Inflator's manual to confirm its battery charging capabilities and requirements when connected to an external power source.
- Ensure the device's internal charging circuit is functioning correctly.
- Adapter feels warm during use:
- It is normal for power adapters to become slightly warm during operation.
- If the adapter becomes excessively hot, disconnect it immediately and discontinue use. Ensure it is used in a well-ventilated area and not covered.
9. Specifications
| Brand | onerbl |
| Manufacturer | Shenzhen Waweis Technology Co., Ltd |
| Compatible Devices | Bullseye Pro Max Digital Tire Inflator (Models 1745-BAT, 9475B-BAT) |
| Input Voltage | 100-240V AC |
| Output Voltage | 11.1V DC |
| Output Current | 3.3 Amps |
| Wattage | 36.5 Watts |
| Connector Type | Barrel Connector |
| Power Plug Type | Type A - 2 pin (North American) |
| Special Feature | Short Circuit Protection |
| Color | Black |
| Cable Length | Approx. 76 inches |
10. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your original purchase or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.





