Solar Charge Controller & Battery Monitor

A charge controller project with voltage and current monitoring for small solar and backup systems.

About this project

Controls charging from a solar panel into a battery and reports voltage and charge state. A good project for students in power and renewable energy options because it combines power electronics with a microcontroller.

What it does

PWM charge control
Battery voltage monitoring
Low-voltage cut-off
Display of charge state

Components needed

Arduino Nano (CH340)
IRLZ44N Logic-Level MOSFET
16x2 LCD with I2C Backpack

You can find these parts in our components shop. To learn the skills behind this project, see the ProtoPulse Academy or read our guide on how to write a good electronics project.