12V-Battery Low Volt Disconnect Circuit Diagram

Introduction

Low voltage cut-off circuits are essential when it comes to protecting your batteries from getting completely discharged. The 12V-Battery Low Volt Disconnect Circuit using LM358 IC and IRFZ44 MOSFET is a simple yet efficient solution to this problem. In this video I have made a 12V-battery low voltage disconnect circuit. With this circuit, we can protect our battery from being damaged by deep discharge.

In this article, we will discuss in the details of this circuit and how it works.

Circuit Diagram of 12V-Battery Low Volt Disconnect

This project circuit can be designed using a few basic components. The circuit diagram of this project is shown below.

More Circuit Layouts

Components List of 12V-Battery Low Volt Disconnect

Following is the list of components used to build the project:

• 1X LM358 IC
• 1X IRFZ44 MOSFET
• 1X 3V ZENER DIODE
• 2X LED
• 1X 10K TRIMPOT
• 4X 1K RESISTORS
• 3X 10K RESISTORS
• 1X 47K RESISTOR
• 1X 3 PIN TERMINAL BLOCK
• 1X PERF BOARD
• JUMPER WIRES

What is a Low Voltage Disconnect (LVD) Circuit?

A Low Voltage Disconnect (LVD) circuit is designed to shut off the power supply to any load before the voltage of the battery drops below a certain level. In other words, it protects the batteries from getting completely drained, which can lead to permanent damage and decrease its lifespan. The 12V-Battery Low Volt Disconnect Circuit using LM358 IC and IRFZ44 MOSFET is a great example of an LVD circuit.

How does the 12V-Battery Low Volt Disconnect Circuit work?

The 12V-Battery Low Volt Disconnect Circuit uses an LM358 IC as a voltage comparator to monitor the battery voltage. When the voltage drops below a preset level, the output of the comparator goes low, which is connected to the gate of the IRFZ44 MOSFET. The MOSFET is used as a switch that cuts off the power supply to the load. When the voltage rises above the preset level, the output of the comparator goes high, and the MOSFET is turned on again, supplying power to the load.

Conclusion

The 12V-Battery Low Volt Disconnect Circuit using LM358 IC and IRFZ44 MOSFET is an excellent solution to prevent your battery from getting completely discharged. The circuit is straightforward, and the components used are easily available. By using this circuit, you can protect your batteries from permanent damage and prolong its lifespan.

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