Portable Modular Solar Power Supply

A compact and modular solar-powered power supply designed for DIY electronics, portable energy systems, camping, prototyping, and educational projects.

This project combines a custom 3D-printed enclosure, lithium battery system, USB-C charging, adjustable solar panel mounting, and interchangeable DC-DC output modules to create a flexible portable power solution.

## Features • Portable and compact design • Adjustable solar panel angle • USB-C charging support • Battery level indicator • Reverse current protection using 1N5819 Schottky diodes • Modular output voltage system • Fully custom 3D-printed enclosure • Custom-designed battery holder for secure and easy battery installation

Depending on the selected DC-DC converter module, the system can provide different output voltages such as: • 5V • 6V • 9V • 12V

The solar charging system uses a CN3065-based solar charging module compatible with 4.5V–8V solar panel input.

In this project, I used two 3V solar panels connected in series to achieve the required voltage for the charging module.

Electronic Components

•DD05CVSA 3.7V to 5V/6V/9V/12V DC-DC Boost Converter Module

https://s.click.aliexpress.com/e/_c3jki9tD

https://s.click.aliexpress.com/e/_c4dGshRH

•USB-C Female Connector ×2

https://s.click.aliexpress.com/e/_c3QlbQan

https://s.click.aliexpress.com/e/_c3WtvQWB

•3V Solar Panels ×2

https://www.aliexpress.com/item/1005005825496564.html

•3.7V Lithium Batteries ×2

https://s.click.aliexpress.com/e/_c4rpP2s7 •Battery Level Indicator Module

https://s.click.aliexpress.com/e/_c3mNqoHd

https://s.click.aliexpress.com/e/_c4F3fCSB

•1N5819 Schottky Diodes ×2

https://s.click.aliexpress.com/e/_c4sNn7Qj

https://s.click.aliexpress.com/e/_c3rsofcX

•ON/OFF Switch

https://s.click.aliexpress.com/e/_c2uZn3E7

https://s.click.aliexpress.com/e/_c3kUSDtt

•Electrical Wires(26 AWG)

https://s.click.aliexpress.com/e/_c4MCrCvd

https://s.click.aliexpress.com/e/_c44Gu3cJ

•Heat Shrink Tubing

https://s.click.aliexpress.com/e/_c4kFO6l9