How many watts does a laptop charger use? Detail Tutorial

How many watts does a laptop charger use
Written by Kami Shah

The power that your laptop charges with constantly changes depending on what you’re doing.
Laptops can use anywhere from 50 to 100 watts or more when sleeping and only about 10-15 W while browsing Facebook, watching videos .

How many watts does a laptop charger use? This is a question that often comes up, and the answer can vary depending on the make and model of your laptop.

However, as a general rule of thumb, most laptop chargers use around 65- watt hours. If you’re looking for a more specific answer for your particular device, you can usually find this information in your device’s user manual.

If you’re looking to save energy (and money), try using a power strip with an integrated surge protector.

This will allow you to charge multiple devices at once without overloading any one outlet, and remember to turn off your devices when they’re not in use.

Even if they’re plugged into a power strip, a little bit of effort on your part can go a long way in terms of conserving energy and reducing your carbon footprint.

The power that charges your laptop is dependent on the charger. Some laptops require higher wattage chargers, while others can be charged with less powerful ones if they have an adaptor or pass-through port to provide extra connections for other devices like smartphones and tablets (which don’t need as much juice).

The average rating range starts at around 100 W,binding restrictions imposed by safety standards mean you shouldn’t typically exceed this amount and goes all the way up to around 250 W.

How much power your laptop charger needs is determined by what your computer draws from the mains, but there are a number of variables that influence this.

Our general rule of thumb is: The higher-end your laptop, the more power it will draw from its charger. With some of the larger laptops, you might see a wattage requirement of 170W or more.

If your laptop requires up to around 130W of power, then an AC adapter measuring 90W should be sufficient (the same goes for those requiring up to 180W and those drawing 100-130W). However, if it has a higher wattage requirement, you’ll need a charger that can provide the power it needs.

If your laptop has a higher wattage requirement, you’re going to want a more powerful AC adapter. For example, if a system requires 170W of power or more, an AC adapter rated at 180W or 190W should be sufficient for most purposes.

Take, for example, the Lenovo ThinkPad T440p with its 90W AC adapter. A 65W charger will still charge the laptop’s battery, but it won’t do so as quickly as it would if supplied with a higher power rating.

However, you should be careful not to use an AC adapter that’s too powerful for your laptop because this can damage the hardware by pushing more voltage through it than is safe or supplying voltage when it isn’t required.

This is why you always need to check your system specifications before buying a new charger to make sure they match up.

How to identify what AC Adapter your laptop needs?

One of the most confusing parts of computing is knowing what AC Adapter you need for your laptop. There are several different styles and even if you have the right one, they’re not always interchangeable.

The good news is that most laptops are designed to accept a universal AC adapter so there is almost always a solution.

The first thing to know about AC Adapters is that generally speaking, all modern adapters will be compatible with any device capable of running off an AC adapter.

If you have a power brick that came with your laptop or use another model, then chances are it’s compatible with yours as well.

You can tell if this applies to you by looking at your existing power source where it attaches to your laptop. If it looks exactly like the one in this photo, then you can use just about any AC Adapter that fits into your power port.

One of the most common problems is that not all adapters are alike and will work for every model of laptop.

The easiest way to tell what you need is by looking at your original adapter (if you still have it). Look at the label on the front or back, often times there will be a model number printed somewhere which tells you exactly what kind of adapter you need.

How to find out how many Watts your laptop uses when charging?

To find out how many watts your laptop uses when charging, use a power meter. The power meter will help you determine the voltage and current that flows from from outlet to your device as it charges.

This is important because if you know these values you will be able to calculate how much electricity your laptop uses while plugged in for a specific time period.

How to save energy while charging laptop?

One of the most important things when it comes to saving energy and charging your laptop at night, is making sure you unplug any device from an outlet before plugging in another one.

This includes smartphones as well. It may be tempting but don’t do this, Instead go ahead with what’s on screen which will allow for faster battery life since they’re not being used constantly while plugged into electricity during daytime hours.

How we will increase laptop battery life while constantly charging?

With a few simple changes, you can increase your laptop battery’s life by up to 20%. These tips include turning off wireless connections when they’re not in use and making sure software updates are current.

A number of factors affect the performance on our computers including their size or resolution, however one thing that impacts all devices equally is power consumption due mainly because it involves electricity running through wires which creates heat as well.

The more efficient this process becomes then better will be with regards towards longevity since less energy.


As you can see, even though the power consumption of your laptop varies depending on how it is used and what settings are enabled for certain programs to use while running in background or active portions of time.

The power that your laptop charges with constantly changes depending on what you’re doing.

Laptops can use anywhere from 50 to 100 watts or more when sleeping and only about 10-15 W while browsing Facebook, watching videos in YouTube Studio Mode, listening through Spotify premium service without downloading anything on to the device first which uses less than 2 percent of total energy consumption by themselves.

About the author

Kami Shah

I am a freelance writer and social media expert. With a passion for crafting compelling content and a deep understanding of online platforms, I create engaging articles, blogs, and posts that captivate audiences. My expertise in social media strategy, content planning, and audience engagement allows me to help businesses thrive in the digital landscape.

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