Building your own solar powered phone charger from scrap electronics is a great way to reduce e-waste while harnessing the power of the sun. With just a few basic components, I was able to construct a simple yet effective solar phone charger that can charge my smartphone when I'm off the grid.

Gather the Necessary Materials

The core components needed to build a solar phone charger are:

Having a soldering iron, wire cutters, voltmeter, and basic soldering skills will be needed for assembly.

Assemble the Circuit

With all my materials gathered, it was time to assemble the solar phone charger. Here are the steps I took:

  1. Attach the solar panel to the lid of the plastic box using hot glue. This allows it to sit vertically facing upwards when the lid is propped open.

  2. Solder the positive and negative wires from the solar panel to the charge controller board's solar panel input terminals.

  3. Solder the battery's positive and negative wires to the charge controller's battery output terminals.

  4. Solder additional wires from the positive and negative battery wire connections to the input terminals on the USB charge module.

  5. Mount the battery and charge controller board securely within the plastic box using Velcro strips.

  6. Attach the USB charge module to the side or front of the plastic box so the USB port is accessible.

  7. Securely close up the plastic box, while allowing the solar panel lid to open for sun exposure.

Testing and Usage Tips

With the solar phone charger wired up, it was time for testing.

Here are some tips for optimal solar charging:

With scrap parts on hand, I was able to construct a custom solar phone charger that provides eco-friendly charging power whenever I need it off the grid. Getting creative with recycled electronics opens up possibilities for reducing waste while harnessing renewable solar energy.