A Solar-Powered Mobile Charger is an eco-friendly device that uses solar energy to charge mobile phones and small electronic gadgets. It mainly consists of a solar photovoltaic (PV) panel, a charge controller, and a battery backup system. The PV panel absorbs sunlight and converts it into DC electricity, which is stored in the rechargeable battery. A voltage regulator provides a stable 5V USB output, suitable for charging all mobile phones.

This project is portable, cost-effective, and highly useful in rural areas, during travel, trekking, and emergency situations where conventional electricity supply is unavailable.

Parts Used:

1. Solar Panel (3W–10W, 6V–12V) – Converts sunlight into electrical energy.
2. Rechargeable Battery (Li-ion / Li-Po / Lead Acid, 3.7V–12V) – Stores energy for later use.
3. Charge Controller Module – Regulates voltage, prevents overcharging/discharging.
4. DC-DC Converter (5V Regulator) – Provides constant 5V USB charging output.
5. USB Output Port – For mobile phone charging.
6. Switch & LED Indicators – To show charging/ON–OFF status.
7. Casing/Enclosure & Wiring – Protects components and ensures portability.