Project Idea:
This project demonstrates a solar-powered battery charging system that efficiently converts solar energy into electrical energy and stores it for later use. It also controls and monitors charging levels to prevent battery damage due to overcharging or undercharging.
Project Description:
The system uses a solar panel to charge a battery through photo-voltaic energy conversion. Using op-amps, it constantly monitors important parameters like panel voltage and load current. When the battery is fully charged, a green LED is turned on, while a red LED indicates overcharging or undercharging conditions. MOSFETs are used to cut off the load when harmful charge levels are reached, and a transistor diverts the current to a dummy load when fully charged, protecting the battery and ensuring safety.
Components:
Solar Panel
Load
Battery
Indicators (Green LED, Red LED)
Resistors
Capacitors
Transistors
MOSFET
Cables and Connectors
Diodes
PCB and Breadboards
LEDs
Transformer/Adapter
Push Buttons
Switch
Project Features:
Solar-based rechargeable battery system
Automatic charge control to prevent overcharging/undercharging
LED indicators for charging status monitoring
MOSFET-based protection for load cutoff
Safe battery operation using dummy load switching
Compact and educational design for students
Applications:
Electronics learning and prototyping projects
Renewable energy-based systems
Battery charging educational kits
Demonstrations of sustainable energy solutions
Power backup concepts for small devices
Project Includes:
Project components
Circuit diagram / circuit connections
Source code
Instructions document
Project Types:
- DIY KIT (Do It Yourself KIT) - Along with the components, you will get the source code, circuit diagram/circuit connections, and instructions document to help you build the project easily.
- Ready-Made - We are providing a fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Dimensions:
Approx. 20 cm x 15 cm x 8 cm
Shipping dimensions:
Length: 25cm
width: 20cm
height: 10cm
Weight:
Approx. 750 g
Estimate project weight: 2kg
Notes: All the products are made by LearnElectronics India and not for re-sale

