How Many Amps Does a Laptop Use? Explained In Details (2022)

Being an enthusiast laptop savvy, Evan Charles shares his wisdom on LaptopEcho to help others pick the right machine. He loves guiding people to get...

Components play an important role in determining how your laptop will perform. The processor, memory, graphics chip, and others all contribute to the laptop’s performance. But on this page, we will look into how many amps does a laptop use to operate optimally.

A laptop will usually use somewhere between 1 and 3 amps or more depending on the size of the laptop and whether it is being used heavily or not. So, if you have two laptops from different brands, the amps required for each might not be the same.

Understanding how a laptop function is important if you want to use one. If you do not know how it operates, you may become frustrated while you engage on a laptop. Therefore, understanding the basics of laptops will help you to operate your laptop with ease.

How Many Amps Does a Laptop Use?

The exact number of amps a laptop computer uses depends on the make and model of the computer, but it is between 0.5 to 0.94 amps per hour. Just like a motherboard affects performance, it also draws different levels of power on different laptops. If a laptop is plugged into the wall, it will use about 1-2 amps for a small laptop and 4-6 amps for larger laptops if used for more than 7 hours a day.

How Many Amps Does a Laptop Use

Also, most laptops draw around 2 to 3 amps when used for a longer period, with the average being about 2.5 amps. However, the amps it draws depend on the age of your laptop and its size and manufacturer. The fact is that a laptop uses as much energy as it needs. However, the power draw can be significantly less when it’s in power save mode.

Most of them are designed to be energy efficient and will not draw more power than needed. So, the amps your laptop draws depend on how you use your laptop, what settings you use, and the situation.

For example, the gaming laptop power consumption will be higher than those not used for gaming. Also, if you are using your laptop most of the time on  the battery, it will use less power than when plugged in


In that contrast, if you’re a professional who has to work outside most of the time, like a civil engineer, getting a proper machine is a must. You can go for a laptop for construction management that will offer you better outdoor visibility with longer battery backup.

Average Amps Consumed by a Laptop

As a laptop computing device requires so much energy, it is important to know this information. Many factors affect how many amps your laptop will consume. Your laptop is expected to consume 0.5 to 0.94 amps per hour.

Average Amps Consumed by a Laptop

However, the average amp consumption of a laptop can vary widely, depending on the software needing to be run, the power it is drawing from the battery, and how efficiently it is performing. Plus, when the hardware of the laptop are working in full effort, like the CPU cooler or exhaust fan, they draw a significant chunk of total drawn power from the outlet.

Also, most laptop manufacturers often provide an estimate at startup or in the specification sheets. Still, some power draw estimates can be misleading because they come at peak performance under ideal circumstances. To get a precise assessment of your laptop power requirements, you can check the back of the laptop, mostly on the battery pack; you will find the details there.

How Many Amps Does Gaming Laptop Consume?

The average gaming laptop will drain 2.5 amps when it runs on its battery and 7 amps when it is plugged into the wall. On average, most gaming laptop should consume around 16 amps or higher for six hours of gaming performance.

How Many Amps Does Gaming Laptop Consume

How Many Amps Does a Mac Laptop Consume?

The size of the computer is important when considering the amount of amps it will consume. There are different types of MacBooks, and each has its specific amp and watt requirement to operate properly. However, a Mac laptop can run on anything from 9 to 18 amps, depending on the model and how much power it uses.

How Many Amps Does a Mac Laptop Consume

Tips for Ensuring Energy Efficiency in Laptops

There are ways you can maximize your laptop’s potential to make it perform greatly. So, below are ways you can enhance the efficiency of your laptops.

Increase free space in local disc

Your computer’s hard disk can fill up quickly and make your computer run very slowly. If you consistently delete temp files, you can increase the free space in the local disk. Laptops can quickly fill up with unneeded files, reducing the amount of free space available and slowing your computer down.

Increase free space in local disc

Right-click on a document, image, or video file and select ‘Delete’ from the drop-down menu to maximize free space.

Check pc for viruses and delete them.

To ensure that you are following the best practices for preserving energy efficiency, it’s important to practice good PC hygiene. Always check your laptop for malware and ensure that you delete them to keep your pc safe. Not only will it slow down the performance of your pc, but it can also cause havoc that could have been avoided.

Check pc for viruses and delete them

Reboot your pc regularly.

Reboot your PC regularly instead of keeping it on all the time. This allows your system to run more efficiently and can create some extra battery life. When you reboot your computer, everything in memory is cleared out. It can fix many problems from Windows running for a long time.

Reboot pc

Delete unused programs

If you have a laptop with limited space, keep it organized and clean by deleting unused programs. It will save room on your hard drive for more important programs. On top of that, the machine will have less load to take on as fewer programs are sending in less electrical signals.

Delete unused programs

Limit start-up programs

The Windows programs contain a lot of useless functions, and you don’t need them all. Make a list of the programs you use regularly, and uninstall installed programs by default. Note: You may have to uninstall individual services from the registry.

You can also change the settings for the automatic start of your programs in Windows to reduce their running at startup or prevent them from running even if they are not already running, which may reduce their startup time.

Keep the desktop free.

The desktop is the home space for your laptop, but it is also a place to accumulate files. Keeping the desktop free of files and folders provides additional space for the laptop’s hard drive to run more efficiently.

If you have files or folders that you need on your desktop, be sure to keep them organized in a tight space, so they don’t take up valuable space on your hard drive.

Disable automatic updates

You should deactivate the automatic update feature on your laptop. Whenever a program is automatically updated on your computer using the Internet, some parts of that program may be re-written even if you are not using it.

Disable automatic updates

Some automatic updates might cause havoc and come with malware, and that is why you need to ensure that you do not allow them. You can always update all-important apps for your laptop performance yourself.


We all know that our computers require certain energy and power to function optimally. Now that you know how many amps does a laptop use per hour, you can easily calculate your power cost to run the machine. The secret to finding out the right amp and wattage of a laptop is to check the manual that comes with the laptop.

Also, most laptops come with laptop watt usage information written on the battery area or at the back of the laptop. You can always check to ensure the amps and watts your laptop needs perform excellently.

Evan Charles

Evan Charles

Being an enthusiast laptop savvy, Evan Charles shares his wisdom on LaptopEcho to help others pick the right machine. He loves guiding people to get the best out of their laptops as he does.

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