Introduction
This manual provides essential information for the safe and effective use of your Kircuit 5V AC/DC Adapter. This adapter is designed to convert AC power into DC power, suitable for devices requiring 5V DC input, such as the Hyper Tough 1000 Lumen rechargeable LED work light (models 3507, 7105). Please read these instructions carefully before use.
Key features include: 100% Brand New, High Quality AC/DC Power Charger. Input: 100V-240V AC. Built-in Dynamic IC, Charger IC & Power fuse for rapid charging and overcharge protection.
Setup Instructions
Follow these steps to properly set up your AC/DC adapter:
- Step 1: Verify Compatibility. Ensure your device requires a 5V DC input and has a compatible barrel plug connector. This adapter is compatible with Hyper Tough 1000 Lumen rechargeable LED work light models 3507 and 7105.
- Step 2: Connect to Device. Insert the barrel plug connector of the adapter firmly into the DC input port of your device.
- Step 3: Connect to Power Outlet. Plug the AC prongs of the adapter into a standard 100V-240V AC wall power outlet.
- Step 4: Power On. Once connected, your device should begin to power on or charge, depending on its design.

This image shows the Kircuit 5V AC/DC adapter, highlighting its compact design and the barrel plug connector for device input.
Operating Instructions
The Kircuit 5V AC/DC Adapter functions as a power supply or charger for compatible electronic devices. Once connected to a power source and your device, it will automatically provide the necessary 5V DC power.
- Power Supply: For devices that operate directly from AC power, the adapter converts the wall current to the required DC voltage.
- Battery Charging: For devices with rechargeable batteries, the adapter facilitates the charging process. The built-in charger IC and power fuse help protect against overcharge.

A view of two Kircuit 5V AC/DC adapters, illustrating their compact and durable casing.
Maintenance
To ensure the longevity and optimal performance of your Kircuit AC/DC adapter, follow these maintenance guidelines:
- Keep Dry: Avoid exposing the adapter to moisture or liquids. Do not use in damp environments.
- Clean Gently: Disconnect from power before cleaning. Use a dry, soft cloth to wipe the exterior. Do not use harsh chemicals.
- Store Properly: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures.
- Handle Cords Carefully: Do not yank or pull the cord to disconnect. Always grasp the plug itself. Avoid bending or crimping the cord excessively.
- Inspect Regularly: Periodically check the adapter and cord for any signs of damage, such as frayed wires or cracked casing. Discontinue use if damage is observed.
Troubleshooting
If you encounter issues with your Kircuit AC/DC adapter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on/charging. | Adapter not properly plugged in. | Ensure both the adapter and the device are securely connected to their respective ports and the wall outlet. |
| Device not powering on/charging. | Power outlet is not active. | Test the power outlet with another device to confirm it is working. |
| Device not powering on/charging. | Incompatible device. | Verify that your device requires 5V DC input and has a compatible barrel plug. |
| Adapter feels unusually hot. | Overload or poor ventilation. | Ensure the adapter is used in a well-ventilated area. Disconnect if it becomes excessively hot and allow it to cool. If the issue persists, discontinue use. |
| Visible damage to adapter or cord. | Physical damage. | Discontinue use immediately. Do not attempt to repair. |
Specifications
- Brand: Kircuit
- Input Voltage: 100-240V AC
- Output Voltage: 5V DC
- Output Current: 0.9A (900mA)
- Connector Type: Barrel Plug
- Compatible Devices: Hyper Tough 1000 Lumen rechargeable LED work light (models 3507, 7105)
- Special Feature: Built-in Dynamic IC, Charger IC & Power fuse for rapid charging and overcharge protection.
- Cord Length: Approximately 6.5 ft

This image highlights the adapter's power cord, indicating a length of 6.5 feet for convenient reach.

The adapter is shown in a typical use scenario, plugged into a power strip on a desk, demonstrating its compact size.
Warranty and Support
This product is covered by the standard warranty provided by the manufacturer. For specific warranty details, please refer to the product packaging or contact the seller directly. If you require technical assistance or have questions regarding your Kircuit AC/DC adapter, please reach out to the point of purchase or the manufacturer's customer support.