How to Make a Homemade Portable Charger in Just 5 Minutes: A Quick and Affordable Trick - Page 2

2. Strip the wires

Inside the cut cable, you’ll find several colored wires. Focus on the red (positive) and black (negative) wires, as these are the ones responsible for powering your phone.

3. Connect to the battery holder

Attach the red wire to the positive side of the battery holder and the black wire to the negative side. Secure the connections with tape to keep them in place and prevent short circuits.

4. Insert the batteries

Place the AA batteries into the holder, making sure the polarity (positive and negative ends) matches the labels on the holder.

5. Connect to your phone

Plug the USB connector into your phone. If all connections are correct, your phone should begin charging.

Important Tips and Cautions

This DIY charger is meant strictly for emergencies. Using it regularly is not advised, as the batteries don’t offer consistent voltage and will run out quickly.

Double-check your wiring — connecting the wrong terminals or reversing the polarity can damage your phone.

To make this setup safer, you could add a voltage regulator to avoid overloading your device.

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