In this video, I will show you how to make a simple 12V battery level indicator circuit that can be created using only LEDs and resistors. Towards the end of the video, I will briefly show the simulation of this circuit in Proteus. First, let's start with what materials are needed for this circuit. We will make the indicator level in 4 stages. Here we can use four LEDs, 1 red, 1 blue, 1 green and 1 yellow LED. Since the highest voltage will be around 12V, we need to use four 1kΩ resistors that we will connect for these LEDs to work without damage.