Tsukure Mad Labs Battery Monitor

Sometimes we face a common problem when making any project related to battery or power supply - we don’t know about battery is charged or discharged. To test battery there is one common method which is using voltmeter that is available in the Multimeters. But here we have developed this battery monitor circuit to test the battery charging status. In this circuit we can easily test batteries by connecting it with the circuit. Here some LEDs are used for showing battery status.

Components used in this module...

Find out more about the components used in this STEM Module.

Let's Get Started!

Below you will find a list of bits to gather before hand, followed by a detailed schematic. Using a breadboard lay out the components and connect them together as shown. Alternatively you can purchase this module from our shop and simply solder the components in the places indicated on the quality assured printed circuit boards provided.

What You Need...

1 9V Black Battery Holder Clip Snap On Connector Cable Battery / Battery Holder
2 LM358P Integrated Circuit (IC)
2 5mm Green (Diffused) LED
1 5mm Red (Diffused) LED
1 5mm Yellow (Diffused) LED
1 10K
[ Brown, Black, Black, Red ]
Resistor (0.25 Watt)
4 220R
[ Red, Red, Black, Black ]
Resistor (0.25 Watt)
4 10K (103) Resistor (Trim Potentiometer)

NB: Any resistor colour codes specified relate to 5 band resistor codes, the 5th band has not been shown intentionally. The 5th band indicates the resistor tolerence, we use only the highest tolerence resistors in our products.

Sharing is Caring!

If you like this project, or maybe, know someone else that might, why not click the buttons below to share the experience!

Get Involved!

We are building an international community of engineers, programmers, builders, makers, nerds and geeks, join in below. Ask questions about this module or perhaps share your projects and show others how you have used this information to do something kool!

Tsukure Mad Labs STEM Categories

Tsukure TV

We will be launching the Tsukure TV YouTube Channel very soon! Subscribe now so that you don't miss out on the BIG LAUNCH!

Just An Idea!

This project is currently just an idea, a prototype! This is how we begin our journey of discovery and welcome you to join us.

Why not have a go at making this idea into a working project.

STEM Ranges

Additional Resources


Our team of engineers and coders have been busy building our own resources to allow us to improve our workflow. You too can have these resources at your disposal.


Useful Links