How Many Watts Does a Laptop Use When Charging? Easy Guide

Computers and laptops do not require a great deal of power to operate, but you may think about How Many Watts Does a Laptop Use When Charging.

We’re here to assist you in determining the precise amount of watts per hour that your laptop will require. You will be pleasantly surprised to take in that the numbers are pretty small!

The average power consumption of a standard laptop is somewhere around 90 watts per hour. Still, the power consumption of some of the more powerful models, such as gaming laptops and similar devices, can reach up to 180 watts per hour.

When we consider that there are still light bulbs on the market that consume 100 Watts per hour, we can see that these values are relatively low. When it comes to the amount of electricity it uses, a laptop receives a shallow grade.

How Many Watts Does a Laptop Use When Charging?

You can typically determine how much power your laptop requires if you don’t want to go with the conventional estimate of “about 90 Watts per hour.”

Checking the laptop’s charger is the only thing you can do. The overwhelming majority of them will have access to that information.

Take a look at the output on your charger to determine the values that correspond to your specific model of laptop. You may do this by looking at the charger (it will probably be the only number followed by a W, which is Watts).

Average Laptop Watt90 Watt

Video Guide

Factors Affecting Laptop Charging

It would be tough to argue that several aspects can assist you in measuring watts consumption if you are searching for a straightforward answer. There are too many variables involved.

The following is a list of the factors that have a significant role in determining the total amount of power, calculated in watts, that is required to charge laptops:

  • Adapter
  • CPU
  • Dual graphics-card
  • Other parts of the Laptop in use

1- Central Processing Unit

The Central Processing Unit is the heart of any computer or laptop working machine. The computer’s central processing unit (CPU) is responsible for running the operating system and any applications that you use.

No matter what type of Windows you’re using, many tools are available to help you get more performance out of your CPU. When we upgrade to a faster processor, the battery life decreases. As a result, the battery dies since the CPU takes so much power to run at its peak level.

The adapter supplies watts of energy to the battery, which allows the laptop to function correctly. The battery is put under more significant stress because of the increased workload on the CPU.

However, the watt usage stays the same, resulting in shorter battery life for any laptop. Not to hint at the strain placed on the adaptor. It is why it’s known as an adaptor. Can overcome Such situations by using this tool.

2- Additional Graphics Card

Anyone who has used a device with heavy software and heavy use understands how quickly the battery drains.

In addition to improving screen resolution and clarity, these graphics cards are influential software supporters. As a result, they can also aid in operating specific software.

A graphics card causes the adapter to work harder to charge the battery, resulting in a higher wattage draw.

In this case, the battery and the adaptor are put under strain. Because of this, laptops have a short lifespan because of the overheating of the adapter and the battery.

3- Adapter for Laptop

There is only one method to determine How Many Watts Does a Laptop Charger Use as every laptop has a power cord, and the display port specifies the power requirements on the screen.

A 65-watt power supply powers a 15-inch laptop charger, while a 90-watt power supply powers a 17-inch charger. You can now charge Your laptop based on wattage using these two new adapters. Therefore, you can assume that your computer will consume between 60 and 90 watts of power.

4- Another part of the Laptop

The screen, loud music, excessive internet use, downloading, and other things are also included. It lay a lot of stress on the laptop’s battery and charger.

Laptops are usually in use when they’re being charged, negatively impacting battery life.

While charging, we should close the laptop and then determine how many watts are being used because there is no other stress or load on the computer other than the charging itself.

A laptop’s watt per hour (W/h) can be easily measured using a variety of instruments. The only one thing you require to do is plug in the energy and power monitor and take a reading.

How to Make Your Laptop Use Less Power?

Laptop Charger Wattage Calculator

If you’re concerned about your laptop’s power consumption, you may want to know what you can do to reduce it. It goes a long way toward decreasing energy consumption.

The following are a few things you can do to reduce your laptop’s energy consumption.

1- Dim the Display of Your Laptop 

The laptop’s screen brightness is a major energy hog. Your laptop’s battery will last longer if you reduce the brightness of your screen if you don’t use it frequently. When charging your computer, you will also use less power.

2- Utilize Wi-fi Cautiously

Switch off your Wi-Fi if you aren’t using it for something that requires the internet. There are many ways your laptop consumes a lot of energy.

They have been tested and proven to be highly effective. They’ll help you save money by extending the life of your battery and reducing the amount of electricity you use.

3- Do Not Do Processor-intensive Chores

Performing operations such as video editing and rendering will inevitably tax your device. If you can avoid performing these chores on your laptop, you will save a lot of energy.

A Fully Charged Laptop Should Be Left Unattended, Right?

Leaving your laptop stuff in all the time is a bad idea. You may stop charging your battery as soon as it’s complete, and it won’t overcharge. When the adapter is fully charged, the battery no longer needs to be recharged, and the laptop can be powered solely by the power cord.

Leaving your laptop plugged in all the time can shorten the battery’s lifespan. Leaving devices plugged in all the time does nothing to improve their battery life. The increase in temperature will shorten the battery’s life.

FAQs – How Many Watts Does a Laptop Use When Charging?

Can I Use a 65 Watt Charger on a 60 Watt Laptop?

Yes, you can use a charger with a lower wattage for your laptop; however, if your computer will be operating in High-Performance mode or will require more power for your graphics card. You are using it to play games; there is a chance that it will shut down on its own or lag while you are playing.

How Many Watts Is a Fast Charger?

A charger must output at least 18 watts from a single port to provide rapid charging. It is the industry standard.

Does Higher Watt Charger Damage Battery?

No. There is no correlation between the power rating of a charger and the amount of power used by the device or the battery’s lifespan. A charger with a higher wattage indicates that it can supply up to the amount of current listed; it does not mean that it will deliver that amount of current to the device.


The answer to the issue of How Many Watts Does a Laptop Use When Charging? When it is being charged, it is effortless and straightforward. The number of watts that can draw through its adapter; nevertheless, this quantity is subject to increase as the wattage need rises.

No matter how many watts your laptop uses, I just had to say. Allow the battery to fully recharge by keeping the strain on it to a minimum. Your laptop battery will last longer if you stick to this routine when using it on the road.

Leave your response below if you have any questions or comments about this discussion or anything else. It will be a happiness for us to be of assistance to you.

Good Luck & Keep Visiting!

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