How Many Watts Does a Laptop Charger Use

Laptops are an integral part of any student’s or employee’s life. However, our struggle to adapt to new technologies remains constant. Having a good laptop is no longer a problem, as different prices and configurations are available. While laptops do not require a lot of power to operate, you may occasionally wonder How Many Watts Does a Laptop Charger Use? 

How Many Watts Does a Laptop Charger Use

Calculating the amount of power your laptop will consume is a top priority. A notebook plugged into the wall saves electricity over an external display. Generally, a laptop battery charges in one day, though it can take as little as 20w in some cases.

Factors Affecting Power Consumption of Laptops

Laptops design to maximize each component’s efficiency while maintaining a high level of functionality and processing power. Processors and displays are the primary components of high-power consumers. The following are the primary components of electric consumption:

  • Graphics card 
  • Display 
  • Processor 
  • Random Access Memory(RAM)
  • Hard disk/SSD
  • Module WLAM
  • Laptop Fan
  • Touchpad

Modern laptops with multi-core processors can consume up to 60 watts when heavily used. The graphics card is vital. Laptops use more power if the central processor does not only calculate one install and graphics. Dedicated graphics cards only available in high-end gaming notebooks.

How Many Watts Does a Laptop Charger Use?

One’s may frequently determine the amount of power your computer requires if you disagree with the “around 90 Watts per hour” estimate. You need to check your laptop’s charger. Almost every palm book will contain this information. 

To determine the exact values for your laptop model, check the wattage of the laptop charger. It will likely be the only number followed by a W. Watts is the name.

What Is the Average Power Consumption of a Laptop Per Hour?

While you may be aware of the wattage your charger will send to your laptop for it to operate, the reality is that your laptop will typically consume significantly less. Thus, while working on battery power and even while charging, your laptop will consume fewer Watts than indicated on the charger. The charger’s maximum capacity indicates on the charger’s label (which is usually around 90 Watts). 

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Actual power consumption varies by laptop but also by usage. When your laptop is idle, it consumes very little energy, but when its use for internet browsing or gaming, for example, it consumes significantly more. It’s similar to how your phone’s battery drains faster the more activities you perform on it.

Here are some additional significant factors that affect your laptop’s actual power consumption:

Screen Size

A larger screen requires more power to operate. Laptops with smaller screens are more energy efficient.

Internal Components

If your notebook contain a dedicated graphics card, it will consume more power. If you have various hard drives and SDDs, your power consumption will increase. Additionally, the CPU affects power consumption.

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It, however, is dependent on the task at hand on your laptop. Your laptop’s power consumption will increase if it has a faster CPU to perform specific tasks.

External Peripherals

Anything connected to your laptop that is not powered will increase your laptop’s power consumption: a mouse, an external keyboard, a gaming controller, or an additional monitor. Each of them requires some power to operate. If you want to conserve energy, remember to unplug peripherals when they are not in use.

How to Care for Your Laptop Charger?

Establishing the integrity of your laptop charger will assist you safely charge your laptop.

Avoid Tying Down Your Laptop’s Power

While it’s tempting to wrap your laptop’s power cord, doing so neatly can shorten its life. This repetitive stress can break the thin copper conductors inside power cords. To avoid crimping the wires, wrap your laptop power cord loosely each time to avoid repetitive stress on the same section.

Ensure the Transformer Has Room to Breathe

During the charging process, the transformer may become very hot. To avoid overheating while charging your laptop, place it in an area with adequate airflow (e.g., not wedged in a couch cushion), especially if you anticipate plug-in for an extended period.

Use a Power Strip

How Many Watts Does a Laptop Charger Use

Not just any power strip will suffice; look for one that includes a built-in surge protector. Apart from being convenient (they allow you to plug multiple devices into a single outlet), power strips with surge protectors protect your laptop, phone, and other electronic devices from damaging power surges.

Avoid Contact With Sharp Edges

Exposed wires are a no-no, and prolonged contact with sharp surfaces such as table edges can erode the rubber coating that protects the wires in your laptop power cord. Whether you frequently move your power cord or have a designated charging hub, ensure that your setup does not expose these delicate wires to sharp edges.

FAQs – How Many Watts Does a Laptop Charger Use?

What Is the Proper Way to Charge a Laptop?

A power cable includes every laptop computer. To recharge the laptop, connect the power cable to a standard wall outlet and the other end to the laptop’s power socket. While the battery is keep charging, you can still continue to use your laptop.

Can I Leave My Laptop Plugged in 24-7?

Laptops are only as best as their batteries, and proper battery care is critical to ensuring that they last a extend period and retain their charge. While holding your laptop plug in constantly is not harmful to the battery, you must be cautious of other factors, such as heat, to avoid damaging the battery.

At What Percentage Should I Charge My Laptop?

The better course of action is to stay the battery level between 40% and 80%. Ascertain that your laptop does not overheat and that the cooling fan is functioning correctly. Your laptop battery cannot “overcharge” and cause damage to itself. It is intelligent enough to avoid charging energy.

Should I Charge My New Laptop for 8 Hours?

Following the purchase of a new laptop computer or battery for your laptop, we recommend charging the battery for at least 24 hours. A 24-hour charge ensures that the battery is fully charged and extends the battery’s life. If possible, avoid completely discharging it once it fully charges.


Using the laptop’s underside information will give you an estimate of How Many Watts Does a Laptop Charger Use? A typical laptop charger uses 50 watts, or 5-kilowatt hours, according to the DOE. A Wh means that running a laptop for 8 hours costs 5p.

As you can see, even though your laptop’s power consumption varies depending on the model, peripherals you use, and what you do with it, it will still consume very little energy overall.

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