- Parts List:- IC LM324 1pc
- Zener Diode 2V or 3V 1pc
- Resistor R1 10k, VR1-VR4 10K, R2 100ohm to 1K according to Battery
- LED 4pc different colour or same colour
Hello, Friends, this is the best circuit for battery level indicator. You can use this circuit with any battery 3.7v/4v/6v/9v/12v etc.. you can adjust VR1-VR4 according to voltage Level. See the full video for detail.