Introduction: Repowering a Old Radio Circuit (Powered by Batteries)

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About: (Official Name - Desmotronics) Create, modify circuits for fun, and share works with everyone else who want to build their own circuits. Passion with electronics.

Ever have an old radio that powers only in AC and doesn't have a battery inside?

Today, I will show you how to power your old radio with a battery

and useful if there's a Power outage, and your radio's power depended on the battery without connecting the AC to your radio.

You can pick any type of batteries like 9V or putting batteries in series like 2x Li-ion battery in series to make 8.4V and 6x of 1.5V of Alkaline battery.

Step 1: Materials

All you need is

- Circuitry of the radio (it can be AM, FM, or both)

- Case (You can reuse the case of the radio if still strong enough)

- Alligator clip Wires (for testing)

- Extra Speakers (if your radio's speaker broken)

- Battery (Any types)

-Buck-Converter (optional, if you don't have any batteries other than Lead Acid Battery, to step down voltages)

Step 2: Inspect Your Old Radio and Find the Power Connectors

Be sure that the radio still works.

check it by the following below

- Circuitry and connections

- Transformer and the rectifier.

- What voltage that powering the radio, it can be 6V, 9V, or 12V, (be sure to check it before powering it by looking at the label on the board)

- Speakers

Once you check your radio's condition and found the power connections, you can go to step 3.

Step 3: Connect Your Battery to the Power Connections of the Radio

Connect the Alligator clip wires from the power source of the battery to the radio's power connections.

Be sure to connect the battery's polarity Positive to Positive and Negative to Negative of the radio

Step 4: Finished

You're Finished modifying your radio into a battery operated.

Feel free to comment if you have questions about the project.


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Reminder: -Always have knowledge about electronics and think about safety first before, during, and after making the project. Safety First.

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