Portable Solar & Wind Laptop & Mobile Charging System

Abstract: The Portable Solar & Wind Laptop & Mobile Charging System is a hybrid renewable-energy-based project designed to provide reliable and sustainable off-grid power for charging electronic devices such as laptops, mobile phones, tablets, and USB gadgets. The system combines solar and wind energy sources to generate electricity and store it in a rechargeable battery for continuous operation. Two 12V solar panels are used as the primary energy source, while a small wind turbine acts as a secondary power source during low sunlight conditions. The generated energy is regulated using a charge controller and stored in a 12V battery, ensuring stable and efficient power management. The system is capable of supplying both AC and DC outputs. A 100W inverter circuit with a step-up transformer is used to provide AC power for laptop charging, while regulated USB modules supply safe 5V DC output for mobile devices and other USBpowered equipment. An Arduino Nano-based intelligent control system enhances the functionality of the project by providing password-protected access, automatic charging control, and user-configurable charging duration. A 16×4 LCD display shows real-time system information such as battery voltage, charging status, and active power source. The charging station also includes relay-based automatic output cutoff and buzzer alerts for safety and efficient energy utilization. Due to its portable design and renewable energy integration, the system is suitable for rural areas, outdoor activities, emergency applications, and eco-friendly portable power solutions.

Keywords: Hybrid Renewable Energy System, 2. Solar Energy, 3. Wind Energy, 4. Portable Charging Station, 5.