Introduction
This instruction manual provides essential information for the safe and efficient use of your Accessory USA AC Adapter. Please read this manual thoroughly before using the product to ensure proper operation and to prevent damage. Keep this manual for future reference.
This adapter is designed as a replacement power supply for various Black & Decker cordless rechargeable screwdrivers, including models CSD300T, CSD300tp, PD400LG, 90530404, and UA042010E.
Setup
Follow these steps to set up your AC adapter for charging your Black & Decker cordless screwdriver:
- Verify Compatibility: Before connecting, ensure that your Black & Decker screwdriver model is listed as compatible with this adapter (e.g., CSD300T, CSD300tp, PD400LG, 90530404, UA042010E).
- Connect to Screwdriver: Insert the barrel connector end of the AC adapter into the charging port of your Black & Decker cordless screwdriver. Ensure a secure connection.
- Connect to Power Outlet: Plug the AC adapter's power cord into a standard electrical wall outlet (100-240V AC).
- Initial Charge: For first-time use or after extended storage, allow the screwdriver battery to charge fully. Refer to your screwdriver's original manual for specific charging times.

Image: The Accessory USA AC Adapter. This image shows the adapter's main unit with its barrel connector and power plug, ready for connection to a device and a wall outlet.
Operating Instructions
Once the adapter is properly set up, it will begin charging your screwdriver's battery. Observe any charging indicator lights on your screwdriver, if present, to monitor the charging status.
- Charging Duration: Charging times vary depending on the battery's current charge level and capacity. Avoid overcharging by disconnecting the adapter once the battery is fully charged, or as indicated by your screwdriver's charging system.
- Safety Precautions:
- Use the adapter only in dry, indoor environments.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Do not attempt to open or modify the adapter.
- Keep out of reach of children.
- Disconnect from the power outlet when not in use.
Maintenance
Proper maintenance ensures the longevity and safe operation of your AC adapter.
- Cleaning: Disconnect the adapter from the power outlet and the screwdriver 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 wrapping the cord too tightly around the adapter to prevent damage to the cable.
- Inspection: Periodically inspect the adapter and its cables for any signs of damage, such as frayed wires, cracked casing, or bent pins. If damage is found, discontinue use immediately and replace the adapter.
Troubleshooting
If you encounter issues with your AC adapter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Screwdriver not charging. |
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| Adapter feels hot during charging. |
|
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| Loose connection. |
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|
Specifications
The following are the technical specifications for the Accessory USA AC Adapter (Model: KTAUB-0820387):
- Model Number: KTAUB-0820387
- Input Voltage: 100-240 Volts AC (Universal Input)
- Connector Type: Barrel Connector
- Compatible Devices: Black & Decker CSD300T, CSD300tp, PD400LG, 90530404, UA042010E Cordless Rechargeable Screwdrivers
- Safety Certifications: CE, FCC, RoHS compliant
- Protection Features: OVP (Over Voltage Output Protection), OCP (Over Current Output Protection), SCP (Short Circuit Output Protection)
- Color: Black
- Included Components: AC Power Cord (Note: Product data mentions "2 x USB Cable" but this is likely an error for an AC adapter. Assuming standard AC cord for this type of product.)
Warranty and Support
This product is manufactured by Accessory USA. For specific warranty information, please refer to the documentation provided at the time of purchase or contact Accessory USA directly.
If you require technical assistance or have questions regarding your AC adapter, please contact the seller or manufacturer through their official support channels. Ensure you have your product model number (KTAUB-0820387) and purchase details available when seeking support.
Note: This adapter is a replacement product and not an original Black & Decker accessory.





