1. Introduction
The Wefomey 3V-24V 3A 72W Universal Adjustable AC/DC Power Supply is designed to provide a versatile power solution for a wide range of electronic devices. This adapter converts standard AC household current (100-240V) to a stable DC output, adjustable from 3V to 24V, with a maximum current of 3A and a total power output of 72W. It includes multiple DC tips and safety features to ensure compatibility and protection for your devices.
2. Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in electric shock, fire, or damage to the product or connected devices.
- Indoor Use Only: This power supply is designed for indoor use in dry environments. Do not expose it to rain, moisture, or extreme temperatures.
- Voltage Selection: Always verify the correct voltage requirement of your device before connecting the power supply. Setting an incorrect voltage can permanently damage your device. The LCD display shows the output voltage to assist in correct selection.
- Load Capacity: Do not exceed the maximum output of 3A or 72W. We recommend operating the power supply at less than 80% of its full load capacity to ensure optimal performance and longevity.
- Ventilation: Ensure adequate ventilation around the power supply during operation. Do not cover it or place it in an enclosed space that could restrict airflow.
- Protection Features: The unit includes built-in multiple safety protection systems: automatic over voltage cut-off, over current cut-off, over temperature cut-off, and short circuit cut-off. These features are designed to protect both the power supply and your connected devices.
- Cable Integrity: Regularly inspect the power cable and connectors for any signs of damage. Do not use if damaged.
- Children: Keep out of reach of children.
3. Package Contents
Verify that all items are present in the package:
- 1 x Wefomey 3V~24V 3A Universal AC/DC Adapter
- 14 x DC Connector Tips
- 1 x Reverse Polarity Converter Cable
- 1 x Alligator Clip Test Lead
- 1 x Male DC Power Pigtail Cable
4. Product Features
- Input: AC 100-240V, 50/60Hz
- Output: DC 3-24V Adjustable, Max 3A 72W
- Versatile Compatibility: Suitable for most appliances with input voltage between 3V to 24V and rating power equal to or less than 72 Watt.
- 14 DC Tips: Includes 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C, and a DC terminal connector.
- Safety Protections: Automatic over voltage, over current, over temperature, and short circuit cut-off.
- LCD Display: Shows the real-time output voltage.
- Cable Length: 6ft long power cable for convenient use.
5. Setup Instructions
Follow these steps to set up your Wefomey Universal Power Supply:
- Determine Device Voltage: Identify the required input voltage and current for your electronic device. This information is usually found on the device itself, its original power adapter, or in its user manual.
- Select DC Tip: Choose the appropriate DC connector tip from the 14 included tips that matches your device's power input port. Ensure a snug fit.
- Check Polarity: Most devices use a center-positive polarity (inner positive, outer negative). The Wefomey power supply's default output is center-positive. If your device requires center-negative polarity, use the included reverse polarity converter cable. Connect the converter cable between the selected DC tip and the power supply's output cable.
- Set Voltage: Plug the power supply into a standard AC outlet (100-240V). The LCD display will illuminate. Rotate the voltage adjustment dial to set the desired output voltage. Carefully adjust until the LCD displays the exact voltage required by your device.
- Connect to Device: Once the voltage is correctly set and the tip/polarity are confirmed, connect the power supply to your electronic device.
6. Operating Instructions
Once set up, operating the power supply is straightforward:
- Power On/Off: The power supply activates when plugged into an AC outlet and deactivates when unplugged.
- Voltage Adjustment: Use the rotary dial labeled 'VOLTAGE' to fine-tune the output voltage. The LCD display provides real-time feedback on the selected voltage.
- Using Alligator Clips: For devices without a standard DC input, attach the alligator clip test lead to the power supply's output. Ensure correct polarity (red for positive, black for negative) when connecting to your device's terminals.
- Monitoring Load: While the power supply has safety features, it is good practice to monitor your device's performance. If the power supply feels excessively hot or the device behaves erratically, disconnect immediately.
7. Maintenance
The Wefomey Universal Power Supply requires minimal maintenance to ensure long-term performance:
- Cleaning: Disconnect the power supply from the AC outlet and all devices before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: Store the power supply in a cool, dry place away from direct sunlight and moisture when not in use.
- Cable Care: Avoid sharp bends or kinks in the power cable. Do not place heavy objects on the cable.
8. Troubleshooting
If you encounter issues with your power supply, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/LCD not lit | Power supply not plugged in; AC outlet not working; Internal fault. | Ensure the power supply is securely plugged into a live AC outlet. Test the outlet with another device. If still no power, contact support. |
| Device not powering on | Incorrect voltage; Incorrect DC tip; Incorrect polarity; Device fault; Power supply overload. | Double-check the voltage setting on the LCD. Ensure the DC tip is firmly connected and correct for your device. Verify polarity. Ensure your device's power requirements do not exceed 3A/72W. Test the device with its original adapter if available. |
| Power supply gets hot | Operating at or near maximum load; Insufficient ventilation. | Ensure the power supply is not covered and has adequate airflow. Reduce the load if possible (e.g., use a lower power device). If overheating persists, disconnect and contact support. |
| Voltage fluctuates on LCD | Unstable AC input; Faulty connection; Internal issue. | Ensure the AC outlet is stable. Check all connections for looseness. If the issue persists, discontinue use and contact support. |
Important Note: Always choose the correct voltage before plugging the power supply into your device. Wrong voltage may damage your device. We recommend using less than 80% of the full load capacity for optimal performance and safety.
9. Specifications
| Model Number | WFM-1018-72 |
| Input Voltage | AC 100-240V, 50/60Hz |
| Output Voltage | DC 3-24V (Adjustable) |
| Output Current | Max 3 Amps |
| Output Wattage | Max 72 Watts |
| Product Dimensions | 5.8 x 2.36 x 1.38 inches |
| Item Weight | 12.3 ounces |
| Connector Type | Barrel Connector (with 14 interchangeable tips) |
| Safety Certifications | CE, RoHS |
10. Warranty and Support
Wefomey is committed to providing high-quality products and customer satisfaction. While specific warranty details are not provided in this manual, if you have any questions, concerns, or require assistance with your Wefomey Universal Power Supply, please do not hesitate to contact us through the Amazon platform. Our support team is available to assist you.
