1. Introduction
This manual provides essential information for the safe and efficient use of your onerbl 18V AC/DC Adapter. This adapter is specifically designed as a replacement power supply for Redkey Model M1, M121B, and M1218 cordless electric spin mop floor cleaners, providing 18VDC output for 14.4V 2200mAh Lithium Li-ion battery packs. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the adapter or connected device:
- Use the adapter only with compatible devices as specified (Redkey Model M1, M121B, M1218).
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not attempt to open, modify, or repair the adapter. Refer servicing to qualified personnel.
- Ensure the power outlet voltage matches the adapter's input specifications (AC 100-240V).
- Unplug the adapter from the power outlet when not in use or during electrical storms.
- Keep out of reach of children.

Image: The adapter features built-in protections against short-circuit, over-voltage, and over-current to ensure electrical safety.
3. Setup
- Unpack the Adapter: Carefully remove the onerbl 18V AC/DC Adapter from its packaging.
- Inspect for Damage: Before first use, visually inspect the adapter and its cable for any signs of damage. Do not use if damaged.
- Connect to Device: Insert the adapter's output connector securely into the charging port of your Redkey Model M1, M121B, or M1218 cordless electric spin mop.
- Connect to Power Outlet: Plug the adapter's AC input prongs into a standard AC 100-240V wall outlet.

Image: The AC adapter connected to a power strip, ready for use with a compatible device.
4. Operating Instructions
Once properly connected, the adapter will begin supplying power to your Redkey device. If charging a battery, refer to your Redkey device's manual for specific charging indicators and times.
- The adapter is designed for continuous use within its specified voltage and wattage limits.
- Disconnect the adapter from the wall outlet and the device once charging is complete or if the device is not in use for an extended period.

Image: Front and side views of the onerbl 18V AC/DC adapter, showing its compact design and input specifications.
5. Maintenance
Proper care ensures the longevity and performance of your adapter:
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Avoid tightly winding the cable to prevent damage.
- Inspection: Periodically check the cable and connector for any signs of wear, cuts, or bends. Replace the adapter if any damage is observed.

Image: Illustration of the adapter's durable design, featuring copper wire and a PVC jacket for enhanced longevity.
6. Troubleshooting
If you encounter issues with your adapter, try the following steps:
- No Power Output:
- Ensure the adapter is securely plugged into a working wall outlet.
- Verify the device is correctly connected to the adapter.
- Test the wall outlet with another device to confirm it has power.
- Device Not Charging:
- Confirm the adapter is compatible with your specific Redkey model.
- Check the charging port on your device for any obstructions or damage.
- Ensure the device's battery is not fully discharged or faulty.
- Overheating:
- If the adapter feels excessively hot, disconnect it immediately.
- Ensure adequate ventilation around the adapter. Do not cover it.
- Avoid using the adapter in direct sunlight or confined spaces.
If problems persist, discontinue use and contact customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | onerbl |
| Input Voltage | AC 100-240V, 50/60Hz |
| Output Voltage | 18V DC |
| Wattage | 60 watts |
| Compatible Devices | Redkey Model M1, M121B, M1218 |
| Connector Type | Proprietary 2 Pin |
| Cable Length | Approximately 76 inches (1.93 meters) |
| Dimensions (Adapter Body) | Approximately 2.6 x 1.6 x 1.2 inches |
| Item Weight | 8 Ounces (approx. 227 grams) |
| Material | Plastic enclosure |
| Special Features | Over Voltage Protection, Over Heat Protection, Short-circuit Protection, Travel-friendly |

Image: Detailed dimensions of the AC adapter and its cable length for reference.
8. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact the retailer. Keep your proof of purchase for warranty claims.