If you’re looking for a neat DIY project this weekend, then this DIY 9V Battery USB charger could be a fun gadget to create. With only a few components, including a 9V battery, a female USB port from an old PC, and a small 5V regulator, you can build a handy portable charger.
With some simple soldering, voila, you have a purpose-built tiny portable USB charger for when you’re on the move. This charger can be instantly recharged with an easily available new 9V battery.
Components and Tools Needed
To get started on this project, you will need the following components and tools:
– 9V battery
– Female USB port (can be salvaged from an old PC or purchased)
– 5V voltage regulator (such as the LM7805)
– Soldering iron and solder
– Wires
– Electrical tape or heat shrink tubing
– Small project box (optional, for housing the components)
The 5V regulator is crucial because it ensures that the voltage from the 9V battery is stepped down to a safe 5V, which is the standard voltage for USB devices. Without this regulator, you risk damaging your devices.
Step-by-Step Instructions
1. Prepare the USB Port: If you are salvaging a USB port from an old PC, carefully desolder it from the circuit board. Make sure to clean up any excess solder and ensure the pins are not bent.
2. Connect the Voltage Regulator: The voltage regulator has three pins: input, ground, and output. Connect the input pin to the positive terminal of the 9V battery. Connect the ground pin to the negative terminal of the battery. Finally, connect the output pin to the positive terminal of the USB port.
3. Wire the USB Port: Solder the ground pin of the USB port to the ground pin of the voltage regulator. Then, solder the positive pin of the USB port to the output pin of the voltage regulator. Make sure all connections are secure and there are no short circuits.
4. Test the Circuit: Before finalizing the assembly, test the circuit with a multimeter to ensure that the output voltage is 5V. If everything is correct, you can proceed to the next step.
5. Assemble the Charger: If you have a small project box, place all the components inside to protect them. If not, use electrical tape or heat shrink tubing to insulate the connections and prevent short circuits.
6. Final Touches: Attach the 9V battery to the circuit, and your DIY USB charger is ready to use. You can now charge your USB devices on the go by simply connecting them to your new charger.
Applications and Considerations
This DIY USB charger is perfect for emergency situations where you need to charge your phone or other USB devices but don’t have access to a power outlet. It’s also a great project for learning basic electronics and soldering skills.
However, keep in mind that a 9V battery has limited capacity and may not fully charge larger devices like tablets. It’s best suited for smaller devices like smartphones, MP3 players, or Bluetooth headphones.
For full instructions on how to make this useful gadget, pop over to Unplugged.
Via Unplugged
Latest Geeky Gadgets Deals
Disclosure: Some of our articles include affiliate links. If you buy something through one of these links, Geeky Gadgets may earn an affiliate commission. Learn about our Disclosure Policy.
