How to test Laptop Battery with Multimeter

A laptop battery is an essential component of any laptop, as it provides power to the device when it is not connected to a power outlet. However, over time, the battery’s capacity may degrade, and it may not hold a charge as well as it used to. One way to check the health of your laptop battery is by using a multimeter. In this article, we will show you how to test your laptop battery with a multimeter.

What You Will Need

To test your laptop battery with a multimeter, you will need:

  • A multimeter
  • A laptop with a removable battery
  • A screwdriver (if your laptop’s battery is not easily accessible)

Step 1: Remove the Battery

The first step in testing your laptop battery with a multimeter is to remove the battery from your laptop. This can typically be done by lifting a latch or pressing a button, but some laptops may require you to remove screws to access the battery compartment. Consult your laptop’s user manual for instructions on how to remove the battery.

Step 2: Set the Multimeter to DC Voltage

The next step is to set your multimeter to measure DC voltage. This is typically done by rotating the dial or pressing a button on the multimeter. Consult the manual for your specific multimeter to see how to set it to measure DC voltage.

Step 3: Measure the Voltage of the Battery

Once your multimeter is set to measure DC voltage, touch the positive lead to the positive terminal of the battery and the negative lead to the negative terminal. The multimeter should display the voltage of the battery. If the voltage is less than the rated voltage of the battery, the battery is likely in need of replacement.


Testing your laptop battery with a multimeter is a quick and easy way to check the health of the battery. By following the steps outlined in this article, you can determine if your battery is holding a charge and whether or not it needs to be replaced. Remember to always consult your laptop’s user manual and your multimeter’s manual for specific instructions.

Muhammad Haroon
Muhammad Haroon
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