How to Test Laptop Battery With Multimeter? Simple Guide

We’ll examine How to Test Laptop Battery With Multimeter?. To put it another way, the sole reason for using a laptop rather than a desktop computer is portability’s sake. We cannot transport the entire desktop system. Hence we are unable to move from place to place with this system.

A portable laptop’s other noteworthy feature is that it doesn’t take long to connect and get up and running. Lithium-ion batteries lose their ability to keep a charge after two or three years of regular use. If the battery’s health is compromised for any reason, you must replace it with a new one that is in good condition. The laptop battery health can be checked using a few methods listed below.

How Does a Laptop Battery Work?

There are a few differences between how a laptop battery and other device batteries operate. The batteries that power portable CD Players, radios, and camcorders are nearly identical, except that a laptop battery is more intelligent if that is a word. 

As with other types of batteries, laptop batteries come in various shapes and sizes and incorporate a complex electronic circuit that communicates with the laptop’s hardware. This electronic circuit regulates the amount of energy flowing into the battery during charging and the amount of energy pouring out of each battery cell during discharging, a feature not found in standard rechargeable batteries for other household devices.

A battery is formed by linking several cells together. It is connecting multiple cells in parallel means connecting all of the negative terminals and all of the positive terminals to each other. It increases the battery’s power delivery capacity but not the voltage.

How to Test Laptop Battery With Multimeter?

How to Test Laptop Battery With Multimeter

Now, I will tell you all about Testing Your Laptop Battery With Multimeter? While several methods for testing the laptop’s battery, testing it with a multimeter is a reliable method. Consider the task’s subsequent steps.

Step 1:

The laptop needs to be fully charged.

Step 2:

To determine if a voltage marking is present, remove the computer’s battery and other power sources. Using a multimeter, measure voltage. It is common for laptop voltages to range from 10.8 volts to 9.6 volts to 14.4 volts to 11 volts to 14.8 volts.

Step 3:

It is where the laptop and battery are connected, and placing the connector there will address these issues. Keep in mind that the battery should always face the PC when connected to a computer. To avoid the appearance of grafting, the connector should be at least an inch long. In addition, the battery has both positive and negative connections on the outside.

Step 4:

Set the voltage to 20 volts (V) to turn on the multimeter. Settings of current voltage are indicated by the wavy lines that surround this symbol.

Step 5:

A multimeter probe should be inserted into the connecting slot of the battery’s outermost connector.

Step 6:

Verify the readings of multimeters, but if the battery is good, the meter will display the correct value. Alternatively, take readings when the battery is at 60% and 80% to get the readings.

To get an accurate reading from lithium-ion batteries, you must remove all of the remaining voltage. Whenever the laptop’s battery voltage goes below a predetermined level, it immediately shuts itself off. When the voltage drops, the battery’s capacity to hold a charge diminishes, eventually dying. Because of the protection circuit built into the battery, it is now nearly impossible for us to use a dead battery.

How to Test Laptop Battery Health Windows 10

Step 1:

By pressing the Windows button, you can open up the Start Menu.

Step 2:

Look for a search box labeled “Search programs and files in the Start Menu.”

Step 3:

Search for “Windows Mobility Center” in the search box. Click “Windows Mobility Center” in the Programs section on the left side of the screen once the results have finished loading.

You can check the mobility state of your laptop via the Windows Mobility Center, which contains several mobility indicators.

You should pay attention to the “Battery Status” indication. The remaining battery life is displayed on the screen. If you keep your laptop plugged in, it should read close to 100%.

Charging Tips for Laptops

Not all laptops include detachable batteries for cooling. Additionally, internal cooling fans degrade after a few years. The following are some helpful battery charging tips for laptop owners who want to get the most out of their laptop’s battery life:

Step 1)

Avoid completely discharging the laptop after charging it. The best practice is maintaining a battery percentage of between 40% and 80%. It is especially true for laptop batteries that are more than a decade old.

Step 2)

Ascertain that your laptop does not overheat and that the cooling fan is functioning correctly. Your laptop’s battery is unlikely to overcharge and cause damage due to excessive charging. It has been designed to operate independently of the charging energy.

Step 3)

Batteries that are fully charged have a maximum discharge cycle of 300-500. Charged to 80 per cent, they receive nearly quadruple the number of recharging cycles.

Step 4)

Battery backup, disabling unused ports and devices and selecting battery saving or eco mode all reduce your laptop’s power consumption and help prevent unnecessary battery drain.

Of course, these charging tips and the techniques we’ll discuss later for extending the life of your battery will be ineffective if your battery is already nearing the end of its useful life. As a result, it’s beneficial to know when your battery needs to be replaced.

FAQs – How to Test Laptop Battery With Multimeter?

Can I Run a Laptop Without a Battery?

Without a battery, it is possible to use a laptop. However, it would assist if you fix it into a power outlet for your laptop to operate. It will immediately shut down if you unplug it, just like a regular computer. Otherwise, using your laptop without a battery is entirely acceptable.

Can Laptop Battery Explode?

According to Gizmodo, laptop batteries can explode during everyday use due to a phenomenon known as thermal runaway. Lithium-ion batteries can be harmed by prolonged storage temperatures greater than 60 degrees Celsius, overcharging, manufacturing defects, and product tampering.

Can a Laptop Explode From Charging Overnight?

Laptop batteries may spontaneously detonate if a person uses his laptop while charging for an extended period of 80 hours. However, no one can use a laptop for more than 79 hours while charging. If a person drops a battery into a fire, it will explode.

What Kills a Laptop Battery?

Keep your laptop inside and out of direct sunlight. Although storing laptop batteries in the cold is advised, too much cold can permanently damage them. Avoid using a laptop on your real-life lap. Your lap heats up and blocks air vents on a laptop.


Now, you know this point: How to Test Laptop Battery With Multimeter? After a few years, laptop batteries may fail. It will depend on number of factors, including the quality of the data and the computing behaviour. HP batteries are identical to others. 

Additionally, they degrade faster than other laptop components. As a result, you must determine whether it is dying. You must, however, be aware before replacement. The tips mentioned previously will assist you in testing.

A laptop’s battery is a critical component. Extending the battery life by completely draining the battery before recharging it is recommended. Proper care will extend the life of both the laptop and the battery.

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