1. Introduction
This manual provides instructions for the safe and efficient use of your GUY-TECH AC Power Adapter. This adapter is designed as a compatible replacement for the Drillmaster 69651 18V Screwdriver/Driver Tool battery charging base dock.
Please read this manual thoroughly before use and retain it for future reference.
2. Important Safety Information
To prevent injury or damage, observe the following safety precautions:
- Use the adapter indoors only. Do not expose it to rain, moisture, or extreme temperatures.
- Ensure the adapter's input voltage (100V-240V) matches your power outlet.
- Do not use the adapter if the cord or plug is damaged.
- Always disconnect the adapter from the power outlet when not in use or before cleaning.
- Keep the adapter away from children.
- Do not attempt to disassemble or repair the adapter. Refer servicing to qualified personnel.
- Ensure proper ventilation around the adapter during use.
3. Product Overview
The GUY-TECH AC Power Adapter is a high-quality replacement power supply featuring built-in protections for safe operation.

Image 1: The GUY-TECH AC Power Adapter. It features a black rectangular body with a standard US two-prong plug on one end and a DC barrel connector on the other, connected by a black cable. A small red LED indicator is visible on the adapter body.
This adapter is equipped with a 7-foot long cable, providing ample reach for convenient charging. A small LED indicator on the adapter body illuminates when power is supplied.

Image 2: A graphic highlighting key features: '7 FEET' indicating the cable length, and 'LED light' referring to the power indicator on the adapter.
4. Setup
Follow these steps to set up your AC Power Adapter:
- Verify Compatibility: Ensure your Drillmaster 69651 18V Screwdriver/Driver Tool battery charging base dock requires a DC power supply with a barrel connector. This adapter is specifically designed for this model.
- Connect to Charging Base: Insert the DC barrel connector of the GUY-TECH adapter firmly into the DC input port on your Drillmaster 69651 charging base dock.
- Plug into Power Outlet: Insert the AC plug of the adapter into a standard 100V-240V wall power outlet. The LED indicator on the adapter should illuminate, signifying power is being supplied.
5. Operating Instructions
Once the adapter is properly connected and powered, place your Drillmaster 18V battery into its charging base dock. The charging base will then begin to charge the battery. Refer to your Drillmaster tool's manual for specific battery charging indicators and times.
The adapter's LED light indicates that the adapter is receiving power from the wall outlet and is ready to supply power to the charging base.
6. Maintenance
Proper maintenance ensures the longevity of your power adapter:
- Cleaning: Disconnect the adapter from the power outlet before cleaning. Use a dry, soft cloth to wipe the adapter. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and moisture. Avoid wrapping the cable too tightly around the adapter body.
- Inspection: Periodically inspect the cable and connectors for any signs of wear or damage. If damage is found, discontinue use and replace the adapter.
7. Troubleshooting
If you encounter issues, try the following:
- Adapter not powering on (LED off):
- Ensure the adapter is securely plugged into a working wall outlet.
- Test the wall outlet with another device to confirm it has power.
- Battery not charging:
- Verify the adapter's DC connector is fully inserted into the charging base.
- Confirm the adapter's LED is illuminated, indicating it is receiving power.
- Check the Drillmaster charging base and battery for any issues (refer to their respective manuals).
- Loose connection: Ensure all connections are firm and secure.
If problems persist, contact customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | GUY-TECH |
| Compatible Device | Drillmaster 69651 18V Screwdriver/Driver Tool Battery Charging Base Dock |
| Input Voltage | 100V - 240V (Worldwide) |
| Connector Type | Barrel Connector |
| Cable Length | 7 Feet (approximately 2.1 meters) |
| Protections | Over Voltage Output Protection, Over Current Output Protection, Short Circuit Output Protection |
| Item Weight | 5 Ounces (approximately 141.7 grams) |
| Power Source | Corded Electric |
| UPC | 709081170861 |
9. Warranty and Support
This GUY-TECH AC Power Adapter is a compatible replacement product. For any questions, technical assistance, or support regarding this product, please contact the manufacturer, GUY-TECH, directly through their official channels or the retailer from whom the product was purchased.
Please refer to your purchase documentation for specific warranty terms and conditions.