Introduction
This USB 5V to 3V AAA Dummy Battery Eliminator cable is designed to provide continuous power to devices that typically run on two 1.5V AAA batteries. By converting a standard 5V USB input to a 3V output, it eliminates the need for frequent battery replacement, offering a convenient and eco-friendly power solution for various low-power electronic devices.
Safety Information
- Ensure the device you are powering requires 3V (equivalent to two 1.5V AAA batteries). Using it with devices requiring different voltages may cause damage.
- The dummy batteries are conductors and do not store power. They cannot be charged.
- Do not attempt to use this cable with actual rechargeable batteries simultaneously, as this may cause damage to the device or the cable.
- Keep the cable and dummy batteries dry and away from extreme temperatures.
- Always connect the USB end to a reliable 5V USB power source (e.g., USB wall adapter, power bank, computer USB port).
Package Contents
- 1 x USB 5V to 3V AAA Dummy Battery Eliminator Cable (with 2 dummy AAA batteries)
Image: The USB power cable connected to two dummy AAA batteries.
Specifications
| Feature | Detail |
|---|---|
| Model Number | USB 5V to 3V AAA fake battery power cord, size 7 |
| Input USB | 5V |
| Output | 3V (2x1.5V) LR03 AAA |
| Line Length | Approx. 100cm / 39inch or 200cm / 78.74inch (optional) |
| Accessory Type | Charger Accessories |
| Charger Included | No |
| Battery Included | No (dummy batteries are conductors) |
| Origin | Mainland China |
| Certification | None |
| Package Weight | 0.043 kg |
| Package Dimensions | 10cm x 5cm x 1cm |
Image: Input/Output specifications for the dummy battery eliminator.
Image: Available cable lengths: 100cm (39inch) and 200cm (78.74inch).
Image: Dimensions of the AAA dummy battery: 44mm (1.73in) length, 10mm (0.39in) diameter.
Setup Instructions
- Identify Battery Compartment: Open the battery compartment of your device that uses two 1.5V AAA batteries.
- Insert Dummy Batteries: Carefully insert the two dummy AAA batteries into the compartment, ensuring correct polarity (positive and negative terminals match the device's markings). The cable should exit the compartment without being pinched.
- Close Compartment: Close the battery compartment cover, making sure the cable is not damaged. Some devices may have a small gap for the cable, or you may need to route it carefully.
- Connect USB Power: Plug the USB end of the cable into a 5V USB power source. This could be a USB wall adapter, a power bank, or a USB port on a computer or other compatible device.
- Power On Device: Once connected, your device should be ready to power on.
Image: Example of dummy batteries correctly installed in a device's battery compartment.
Operating Instructions
After successful setup, the device will receive continuous 3V power from the connected USB source. Simply operate your device as usual. This cable is suitable for a wide range of devices including radios, electric toys, holiday LED lights, clocks, calculators, power remote controllers, keyboards, electronic door locks, and other AAA battery-powered devices.
Video: Product demonstration showing installation and operation.
Maintenance and Care
- Storage: When not in use, store the cable in a cool, dry place, away from direct sunlight and moisture.
- Cleaning: Wipe the cable and dummy batteries with a soft, dry cloth if they become dirty. Do not use liquid cleaners.
- Handling: Avoid sharply bending or twisting the cable, as this can damage the internal wires. Do not pull the cable by the wire; always grasp the USB connector or the dummy battery housing.
- Inspection: Periodically inspect the cable for any signs of wear, fraying, or damage. Discontinue use if any damage is observed.
Troubleshooting
- Device not powering on:
- Ensure the USB power source is active and providing 5V. Try a different USB port or adapter.
- Verify that the dummy batteries are inserted with the correct polarity in the device's battery compartment.
- Check the cable for any visible damage or breaks.
- Confirm your device is designed to operate on 3V (equivalent to two 1.5V AAA batteries).
- Intermittent power or flickering:
- Ensure all connections are secure, from the USB source to the dummy batteries in the device.
- The USB power source might be unstable or insufficient. Try a different, higher-quality USB adapter.
- Dummy battery feels loose:
- The dummy batteries are designed to fit snugly. If they feel loose, ensure they are correctly seated and the battery compartment springs are making good contact.
Image: Clarification that the dummy battery provides no power itself and acts only as a conductor.
User Tips
- For best performance, use a dedicated USB wall adapter rather than a computer USB port, especially for devices that might draw more power.
- Consider the cable length needed for your application. The 200cm option provides more flexibility for placement.
- This eliminator is ideal for stationary devices or those used near a USB power source, reducing waste from disposable batteries.
Warranty and Support
For any questions, technical assistance, or support regarding your LR03 AAA Dummy Battery Eliminator USB Power Supply Cable, please contact the seller or retailer from whom you purchased the product. Please retain your proof of purchase for any warranty claims.





