How Many Watts Does It Take To Charge A Laptop? 2023 Guide.

How many watts does it take to charge a laptop? It all depends on the size and model of the laptop and the type of charger being used. Smaller laptops may only require around 30 watts to charge, while larger laptops could need up to 60 watts. 

These factors will also affect the required amount of how many amps does a laptop draw. Which is typically between 1 and 3 amps. As a result, it’s crucial to check your laptop’s manual or the manufacturer’s website to learn about the precise power needs of your particular gadget.

In some newer laptop models, charging takes just 10 watts over a USB port. Ultimately, it all comes down to the specific requirements of each laptop wattage. You should be able to find a laptop charger that works with your laptop based on its wattage output.

How Many Watts Does It Take To Charge A Laptop:

Factors Affecting Laptop Energy Consumption

It is essential to consider multiple things before discussing the factors it depends on. Over time, we have been developing better machines that require less power supply than our older ones yet still work.

Laptop Types

Gaming and other graphics-intensive laptops can be expensive. For example, popular gaming laptops has up to 100 watts actual power consumption. In general, charging such a laptop via USB increases its consumption, so keep this in mind before using them.


A powerful processor consumes less energy. Because a powerful Intel i7 or 9 can process data faster and use less resources than a standard Intel i5.

Graphic Card

High-end laptops combine performance and battery life. For example, an entry-level GTX 1050 may be ideal for light gaming on a laptop. But for work, where every second counts, consider an RTX 2080.


Laptop adapters come in various shapes and sizes, with varying power outputs. Assume your computer’s charging cable is 60W, and you plug it into a 30W wall outlet. If both devices are used simultaneously, there will be insufficient energy left over, causing overheating or an explosion.

Ways To Consume Less Power on your Laptop

Ways To Consume Less Power on your Laptop

1. Check the Battery Health Regularly

It is important to watch your laptop battery’s health to avoid overworking and drawing too much power. Regularly checking battery health will help you avoid potential problems and increase its lifespan.

2. Use Power Saving Modes

Most laptops have power-saving modes that can help conserve battery life. By enabling these modes, you can significantly reduce your laptop’s power.

3. Reduce Screen Brightness

Reduce Screen Brightness

One of the biggest power consumers on a laptop is the screen. By reducing the screen brightness, you can lower the amount of power your laptop uses.

4. Disable Background Apps

Many apps run in the background even when you’re not using them. These apps can consume a lot of power, so it’s best to disable them if you’re not using them.

5. Use Energy Efficient Accessories

Accessories such as mice, keyboards, and chargers designed to be energy efficient can help reduce the amount of power your laptop uses.


How Many Watts Does It Take To Charge A Laptop?

A: It takes approximately 60-80 watts to charge a laptop.

What is the difference between charging a laptop and charging a desktop PC?

A: Charging a laptop takes considerably less power than it takes to power a desktop PC. This is because laptops are charged to 100%, once a day, on average.

How many watts are required to charge a laptop in a car?

The answer depends on the laptop and car a charger. A car needs 100 watts to charge a laptop. If your car has a cigarette lighter outlet, you can use a standard adapter.

What amount of power does a laptop use per hour?

It depends on the model and use. Laptops use 15 to 20 watts per hour when in use. This varies greatly by model and usage.

Does Charging a laptop consumes a lot of Electricity?

There are different laptops consume almost 60W to 90W more power consumption. About 0.12 to 0.18 units of electricity are used for full charging. The laptop electricity usage is different for laptop charging.

How many watts does a laptop charger consumes for fast charging?

For fast charging, laptop needs an 18W adaptor with a USB-to-lightning cable. The plugged cable allow you to have 50% increase in charging in 30 minutes with 18 W.

Is 100 W enough to charge the laptop?

Any electronic device needs low-rate power to charge up. Here 100 W is said to be the maximum power that can change everything. 100W is the input power to charge the device. Even a mobile, laptop, or another electronic gadget can be easily charged with 100 W input power.


While it’s impossible to give an exact number, How Many Watts Does It Take To Charge A Laptop? Many factors affect how much power your laptop consumes, so try some of the tips in this post to reduce the wattage.

Have you tried any of these methods for reducing laptop power consumption? Let us know in the comments below.

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