1. Introduction
This manual provides essential instructions for the safe and efficient use of your onerbl AC/DC Adapter, designed for compatibility with the Enginstar R350 350W Portable Power Station. Please read this manual thoroughly before use and retain it for future reference.

Image 1: The onerbl AC/DC Adapter, including the main adapter unit, detachable AC input power cord, and integrated DC output cable.
2. Safety Instructions
To ensure safe operation and prevent damage, observe the following precautions:
- Use only with compatible devices, specifically the Enginstar R350 Portable Power Station.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to severe impact.
- Do not disassemble or attempt to repair the adapter. Refer servicing to qualified personnel.
- Ensure proper ventilation around the adapter during use to prevent overheating.
- Disconnect the adapter from the power source when not in use.
- Keep out of reach of children.

Image 2: The adapter features multiple protection mechanisms, including safeguards against short-circuit, over-voltage, and over-current conditions.
3. Package Contents
Verify that all items are present in your package:
- onerbl AC/DC Adapter Unit
- AC Input Power Cord

Image 3: The detachable AC input power cord, which connects the adapter to a wall outlet.
4. Product Overview
The onerbl AC/DC Adapter is designed to provide reliable power to your Enginstar R350 Portable Power Station. It features a robust design with built-in safety protections.

Image 4: Dimensional diagram of the AC/DC adapter and its associated cables, indicating a total cable length of 127.8 inches.

Image 5: Illustration of the cable's durable design, highlighting the copper wire core and protective PVC jacket.
5. Setup
- Connect the AC Input Power Cord: Insert the two-prong end of the AC input power cord into the corresponding port on the onerbl AC/DC Adapter unit.
- Connect to Wall Outlet: Plug the standard two-prong plug of the AC input power cord into a suitable wall outlet (AC 100-240V, 50/60Hz).
- Connect to Enginstar R350: Insert the DC output connector of the adapter into the DC input port of your Enginstar R350 Portable Power Station.

Image 6: The AC/DC adapter properly connected to a wall outlet and ready to charge a compatible device.
6. Operating Instructions
Once properly connected, the adapter will begin supplying power to your Enginstar R350 Portable Power Station. An indicator light on the adapter unit typically illuminates to confirm power delivery.
- Monitor the charging status on your Enginstar R350 Portable Power Station.
- The adapter is designed for continuous use but should be disconnected when the power station is fully charged or not in use for extended periods.

Image 7: Examples illustrating the extended cable design, showing flexible placement options for the adapter.
7. Maintenance
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the surface. Do not use liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Coil cables loosely to prevent damage.
- Inspection: Periodically inspect the adapter and cables for any signs of damage, such as frayed wires or cracked casings. Discontinue use if damage is found.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Adapter not supplying power. | Loose connection, faulty outlet, damaged cable. | Ensure all connections are secure. Test the wall outlet with another device. Inspect cables for damage. |
| Adapter is overheating. | Poor ventilation, excessive load. | Ensure adapter is in a well-ventilated area. Disconnect if excessively hot and allow to cool. Verify compatibility with the power station. |
| Indicator light not on. | No power input, adapter malfunction. | Check wall outlet and cable connections. If problem persists, the adapter may be faulty. |
9. Specifications
- Input: AC 100-240V, 50/60Hz (Worldwide AC Input)
- Output: 12V-25V, 3.5A Max, 65W Max
- Compatibility: Enginstar R350 350W Portable Power Station
- Protection Features: Over Voltage Protection, Over Heat Protection, Short-Circuit Protection, Over-Current Protection

Image 8: Illustration of the wide range of applications for the power adapter, including various electronic devices.
10. Warranty and Support
This onerbl AC/DC Adapter is covered by a standard manufacturer's warranty. For specific warranty details, please refer to the documentation provided with your purchase or contact the seller directly.
For technical support or inquiries, please contact your retailer or the manufacturer's customer service. Keep your purchase receipt or order number handy for faster service.