Introduction
This manual provides essential instructions for the safe and effective use of your ProTechTrader 24V 400mA AC/DC Adapter, Model VPOW2404. Please read this manual thoroughly before using the product and retain it for future reference.
Safety Information
Always observe the following safety precautions to prevent electric shock, fire, or injury:
- Use the adapter only with compatible Drill Master 18V NiCD battery charging bases.
- Do not expose the adapter to rain or wet conditions.
- Ensure the power outlet voltage matches the adapter's input requirements (110-120V AC).
- Do not use the adapter if the cord or plug is damaged.
- Unplug the adapter from the power outlet when not in use or before cleaning.
- This adapter is UL Listed, ensuring it meets recognized safety standards.
Product Overview
The ProTechTrader 24V 400mA AC/DC Adapter is designed as a direct replacement power supply for various Drill Master 18V NiCD battery charging bases. It provides a stable 24V DC output at 400mA, ensuring efficient charging.
Note:
- This product is the AC/DC adapter (wall transformer) only. The battery charging base is NOT included.
- The connector diameter is 5.5mm.

Image 1: The ProTechTrader 24V 400mA AC/DC Adapter, showing the main unit with a standard US plug and the barrel connector cable.

Image 2: Packaging for the ProTechTrader 24V 400mA AC/DC Adapter, displaying model number VPOW2404 and input/output specifications.
Setup
- Connect the Adapter to the Charging Base: Insert the barrel connector of the ProTechTrader AC/DC adapter into the corresponding input port on your Drill Master 18V NiCD battery charging base. Ensure a secure connection.
- Plug into Power Outlet: Insert the adapter's plug into a standard 110-120V AC wall outlet.

Image 3: The ProTechTrader 24V 400mA AC/DC Adapter plugged into a standard wall outlet.
Operating Instructions
Once the adapter is connected to the charging base and plugged into a power outlet, you can begin charging your Drill Master 18V NiCD battery.
- Insert Battery: Place your Drill Master 18V NiCD battery into the charging base. Ensure it is seated correctly.
- Monitor Charging Indicator: The charging base typically features an indicator light. A red light usually signifies that the battery is charging. Refer to your specific charging base manual for detailed information on indicator light patterns (e.g., solid red for charging, green for charged).
- Remove When Charged: Once the battery is fully charged (indicated by the charging base's light, if applicable), remove it from the charging base.
Video 1: A short demonstration showing a Drill Master 18V battery charging base with a red indicator light, signifying charging activity. This video illustrates the visual feedback during the charging process.
Maintenance
- Cleaning: Disconnect the adapter from the power source before cleaning. Use a dry, soft 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 moisture when not in use.
- Inspection: Periodically inspect the adapter and its cable for any signs of damage. If damage is found, discontinue use and replace the adapter.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Adapter not properly connected to charging base or outlet. | Ensure all connections are secure. Check if the power outlet is functional. |
| No indicator light on charging base | Power issue or faulty charging base/battery. | Verify power supply. Consult your Drill Master charging base manual for specific indicator troubleshooting. |
| Adapter feels hot | Normal operation or excessive load. | A slight warmth is normal during operation. If it becomes excessively hot, unplug immediately and contact support. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | VPOW2404 |
| Input Voltage | 110-120V AC, 50/60Hz |
| Output Voltage | 24V DC |
| Output Current | 400mA (0.4A) |
| Wattage | 7.2W |
| Connector Type | Barrel Connector (5.5mm diameter) |
| Compatibility | Drill Master 18V NiCD battery charging bases (e.g., models 68413, 68420, 68239, 69651, 68287, 69652, 68240, 68242, 62871, 62870, 62868, 62869, 62872, 68287, 62873, 68239, 62874) |
| Certifications | UL Listed |
| Dimensions | Approximately 3 x 2 x 1 inches |
| Item Weight | Approximately 2.39 ounces |
Warranty and Support
ProTechTrader stands behind its products. For warranty information, technical support, or any questions regarding your 24V 400mA AC/DC Adapter, please contact ProTechTrader directly through their official channels or the retailer where the product was purchased. Keep your purchase receipt for warranty claims.
For more information, visit the ProTechTrader Store.