How Many Watts Does A Laptop Use?

How Many Watts Does A Laptop Use?

However, if you choose to utilize a laptop rather than a desktop, you will almost certainly need a portable computer.

You’re probably astonished to learn how much power a laptop consumes. However, there are other factors to consider, like the Laptop’s battery life.

One of your key considerations should be determining how much electricity your laptop will take.

A long-lasting battery is vital if you want to take your laptop on extended trips or to regions where you won’t be able to plug it in.

You’ll need to know how many watts your laptop uses to figure out how long your battery will last.

The question that everyone has is this: “The number of watts it consumes is a measurement of how much electricity it consumes. The quicker your laptop’s battery drains, the more power it requires.”

There is no definitive answer to the question of how many watts a budget laptop consumes. However, most laptops need between 20 and 100 watts per hour, with some laptops requiring up to 180 watts per hour.

The rationale for the Laptop’s usage is usually reflected in these variances. Varied hardware and use needs different hardware and use.

You might anticipate your Laptop to use more watts if you are a serious gamer or intend on utilising apps that need high-quality images.


Your laptop’s adapter, on the other hand, is the power source that connects to the central system. The more powerful your laptop’s adapter must be, the bigger it must be.

If you’re looking to update your laptop, you should bear this in mind. Make sure that everything you instal is compatible with the power supply of your laptop.


Meanwhile, the central processing unit (CPU) of your laptop is one of its most important and useful components, serving as the computer’s brain.

It’s the region of your brain that executes programmes and converts your actions into reality, whether you’re browsing, constructing a home, or playing a fast-action video game.

However, not all CPUs are created equal. CPUs of higher grade are more energy efficient and use less power.

Graphics Card

The graphics card, on the other hand, is normally in charge of the display quality on your laptop.

If all you need your laptop for is surfing the internet and doing spreadsheets, a lower-grade graphics card will suffice like Acer Aspire.

However, if you intend on gaming or using computer-aided design (CAD) software, you should upgrade your graphics card.

A great and better card will increase pictures and help the computer work more smoothly, but it will need more power.

Screen Size

The screen on your laptop, on the other hand, is the most significant drain on its battery. The larger the screen, the more battery it consumes.

A 16-inch laptop screen, on the other hand, consumes roughly 60 watts per hour. If you choose a bigger model, however, your power may reach up to 100 watts each hour.

Calculation Your Laptop’s Wattage

Without the hardware listed, a laptop will not work. Each brand and model, however, will have its own set of specs.

Checking a laptop’s adapter is the simplest method to obtain a general approximation of how many watts it consumes.

The adapter will display the maximum power input that your laptop can handle. You can check a more exact amount of its power usage with a little effort.

Read Also: 3 Ways on How to Charge a Laptop in the Car

Check the Components

Your laptop components’ specs are generally accessible on their individual websites.

However, combining them together will not tell you the actual wattage or power usage of your laptop.

However, plugging the numbers into an online power usage calculator will reveal just how much energy your laptop consumes.

Electricity Usage Monitor 

A power usage monitor is the simplest method to determine the wattage of your laptop.

Connect your laptop to one of these devices to get a real-time estimate of how many watts your laptop consumes and to look at the power use.

Ways to consume Less Power on your Laptop

If you have already understood the level of power consumption by your Laptop and are unhappy with the outcomes, you’ll need to come up with some techniques to save energy.

We’ve tried a few different formats to get our computers to come over in various ways.

When the laptop is completely charged, make sure the plug is removed.

Never overcharge your laptop; doing so degrades the battery and uses more energy. Instead, plug in the charger when the charge reaches 10%.

Please do not wait for it to turn off on its own. This procedure demands more work, drains the battery, and consumes more energy. 

To keep the laptop cool while charging, get a cooling pad.

Allow the Laptop to cool down before beginning your work to reduce consumption. To prevent any system stress, update your CPU and other hardware.

Always use the manufacturer’s original charger.

There are a variety of alternative ways to consume energy that you might explore. Having a screen with a high brightness consumes a lot of electricity.

This may be avoided by darkening the screen while not in use, which will also protect your eyes.

Frequently Asked Question:

Q1. Does a laptop use less energy than a desktop computer?

Yes, a laptop needs less power than a PC since it has so many different components.

There are a variety of laptops that use more power than a standard laptop. So, let’s look at how many watts a laptop consumes and what elements influence it.

Q2. Does the Wattage of a laptop fluctuate depending on the brand, such as Acer, Dell, ASUS, HP, and so on?

The watt use restrictions are the same regardless of whatever brand your laptop is from: HP, Lenovo, DELL, ASUS, Acer, MSI, Razer Blade, and so on.

The consumption will be considerable if the laptop has a high specification and GPU. Even if two companies have laptops with the same specifications, the wattage will be similar.

Q3. What is the wattage of a 15.6-inch laptop?

As a result, we examined the characteristics of around 237 models and discovered that most 15.6-inch laptops utilize roughly 60 watts of electricity on average.

Bottom Line:

Finally, let’s recap what we’ve learned about laptop power usage. When we charge it, a laptop uses 60W of electricity in the consumer.

When used, however, it is considerably more dependent on the other components as a whole.

It is preferable to use a gadget to determine the wattage of your laptop rather than going through the manual approach.

The procedure will most likely or not offer you an exact result, leaving you perplexed. You can utilise your time and intelligence to come up with an idea if you need one.

However, if you need 100% accuracy for a legitimate reason, make sure you utilise the Electricity Usage Monitor.