Make Your Own LED Battery Level Indicator

In this project I will show you how we can use the classic LM3914 IC to create an LED Battery Level Indicator. Along the way I will show you how the IC works and explain why it is not the most precise circuit for a Li-Ion battery pack. And at the end I will show you how I created my own, more precise Battery Level Indicator circuit with a couple of simple components. Let's get started!

The video gives you all the information you need to create your own Battery Level Indicator. During the next steps though I will present you some additional information.

Here you can find a parts list with example seller (affiliate links):

Aliexpress:

2x LM324: https://s.click.aliexpress.com/e/_d8EF8Yr

6x 10k Trimmer: https://s.click.aliexpress.com/e/_dTFyPv5

6x 2k Resistor: https://s.click.aliexpress.com/e/_dTPpXjt

6x 5mm LED: https://s.click.aliexpress.com/e/_dV63r7D

1x Boost Converter: https://s.click.aliexpress.com/e/_d8Eky7d

Ebay:

2x LM324: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

6x 10k Trimmer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

6x 2k Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

6x 5mm LED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Boost Converter: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

2x LM324: https://amzn.to/2KO65iu

6x 10k Trimmer: https://amzn.to/2u3udnH

6x 2k Resistor: https://amzn.to/2KE0DPY

6x 5mm LED: https://amzn.to/2u9Cbeg

1x Boost Converter: https://amzn.to/2u2Htcb

Here you can find the schematic as well as pictures of my finished perfboard circuit. Feel free to use them as a reference to create your own circuit.

You did it! You just created your own LED Battery Level Indicator!

Feel free to check out my YouTube channel for more awesome projects: http://www.youtube.com/user/greatscottlab

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