Can I Use A Lower-Wattage Charger For My Laptop?

Can I use a lower-wattage charger for my Laptop? Many people ask this question, and the answer is yes! but It’s not ideal to use. This blog post will discuss whether I can use a lower-wattage charger for my Laptop and how to pick the appropriate one for your needs.

There are 2 different scenarios-higher wattage charger and a lower wattage one. Using a higher-wattage charger is perfectly safe. Higher-wattage chargers provide faster charging for your Laptop. 

However, using a lower-wattage charger may result in slower charging speed or power fluctuations, which can damage the components of your Laptop.

In general, when choosing a charger for your Laptop, you should always stick with the one provided by the manufacturer. This is because your Laptop’s charger was explicitly designed to meet your device’s power requirements.

A lower-wattage charger is a different issue. It could be better to use. As a result, we recommend using something other than one.

What Does Charger Wattage Mean?

Wattage is a measure of the power capacity of a charger. It determines how much power a device uses and needs, so the charger should provide the same or a more significant amount of energy.

Every charger has its level of wattage. A higher wattage indicates that your charger can supply more power to your laptop battery, while a lower wattage means less power. The higher the wattage, Your Laptop’s battery will charge quickly. 

You might wonder why a higher-wattage charger doesn’t cause any problems. This is because a device will only take in the wattage required, even though the charger can supply more.

What Is the Voltage of a Charger?

Voltage is a measurement of the electrical potential difference between two points and is measured in volts (V). A higher voltage indicates that more power can be transferred through a wire, while a lower voltage means less power can be shared.

The voltage of a laptop charger is typically specified on the side of the power brick or the unit that connects the wall outlet to your Laptop.

How do AC and DC power differ from one another?

AC power is the type of power that you get from your wall outlet. It alternates between positive and negative voltages at a very high rate of speed.

DC power, on the other hand, is direct current. It runs in only one direction and has a constant voltage.

What do you mean by Amps of a Charger?

The wattage of a charger is the amount of power it can provide to your Laptop. The amperage of a charger is the current (amps) that it provides.

So, when you’re looking for a new charger for your Laptop, you need to ensure that your charger has enough watts and amps to meet the required wattage of your Laptop.

How Exactly Does a Laptop Power Supply Work?

A laptop power supply transforms wall socket AC (alternating current) power into the power of DC (direct current) for a laptop to run. The power supply uses a convertor and then rectifies the resulting AC voltage into DC voltage using a series of diodes. 

When you insert your laptop charger into the socket, AC power gets converted into DC and then supplied to the motherboard.

The motherboard will redistribute the power to the different sections of the Laptop. The energy in the battery can be utilized later when the charger is unplugged.

If they get enough power, they will run smoothly. However, some laptops can run standard programs smoothly but won’t be able to run high-power-consuming programs.

Can I use a lower-wattage charger for my Laptop?

Yes! You can use it, but it’s not recommended. A lower-wattage charger cannot fulfill the power demand, and It’s not a wise option as the performance of the Laptop will be severely affected. 

Using a 60 Watt charger for Laptops that need 90 Watt would not be effective and take longer to charge your Laptop and shorten its lifespan.

Based on multiple feedbacks and experiences by users and professionals, properly charging your Laptop through a low-wattage charger can be tricky. Since the power trickles in slowly, To set your Laptop up might take a long time, which could be better. 

Disadvantages of using a lower wattage charger for a laptop.

Using a lower-wattage charger can directly impact your Laptop’s performance. Here we discuss some disadvantages of using the lower-wattage charger.


Using a low-wattage charger can result in the Laptop overheating. A lower-wattage charger takes longer to charge the battery fully, so it gets hotter.

In addition to reducing your Laptop’s performance, the overheating issue may also damage your device in other ways.

Damage Components

The lower-wattage charger may not deliver enough power to the Laptop, causing some of its components to be damaged. This can make your device faulty, and you may need to replace its part(s).

Damage Components

The lower-wattage charger may not deliver enough power to the laptop, causing some of its components to be damaged. This can make your device faulty, and you may need to replace its part(s).


As a result of using a lower-wattage charger, you will notice a slight performance drop in your Laptop because your laptop components are not getting the power they require to run correctly. When you run power-demanding software, your Laptop will crash. So, if you want better performance, use a charger recommended by your Laptop’s manufacturer.

Reduced Battery Life

Lower-wattage chargers may not provide adequate charging power, leading to shorter battery life and reduced overall. This means that even with a full charge, the Laptop may need to give more ability to last as long as it should.

If you are using a lower-wattage charger for your Laptop, it is essential to be aware of these risks and take steps to mitigate them. For instance, you can charge your Laptop for shorter periods or ensure it is fully charged before unplugging the charger. 

Additionally, you can keep an eye on your Laptop’s battery life and performance to ensure that it is not adversely affected by the lower-wattage charger.


How many watts does a laptop charger use

Is it Possible to Utilize a Lower Wattage Charger Without Damaging your Laptop?

There is only one possible situation where we recommend using a lower-wattage Laptop. This is when your system is fully charged, and you want to prevent overheating while conserving the battery.

If your device’s battery is low, ensure you’re not currently using the Laptop while it charges. By doing this, you’ll also extend the life of your Laptop’s battery.

In general, using a lower-wattage charger for your Laptop is not recommended. This charger will not provide the power to charge your device and its battery at total capacity. Additionally, you risk overcharging your device, damaging components, and possible fire hazards.

What Are the symptoms of a Laptop Isn’t Getting Enough Power?

Several signs indicate it isn’t getting enough power. These include:

  • Your computer is running slower than usual.
  • Your laptop battery drains quickly.
  • The device isn’t charging correctly.
  • Your computer shuts down unexpectedly or randomly.
  • If the charger isn’t delivering sufficient wattage, you will see issues with graphics and your display.
  • Emitting a lot of heat.
  • A lot of noise when the PC is running.
  • Smell smoke or burning.

If you see any of these symptoms, it’s best to turn off your Laptop and wait until you have the appropriate charger before using it again.

It could be damaged if you try to use it while the Laptop’s power supply is insufficient.

What Happens When Power Supply Is Too Strong?

More watts than needed will not cause your PSU to fail or any other problems associated with a weak PSU. 

The power supply will only provide the needed wattage. For example, if your Laptop requires a 65-watt power supply and you buy an 85-watt one, then the extra 20 watts will not harm your Laptop or cause it to overheat.

Using a Different Charger is Safe?

The wattage of the charger that you use for your Laptop is essential. If you’re using a lower-wattage charger than what your laptop needs, it can cause serious problems. It’s important to know when it’s safe to use a different charger and when it would be better to stick with the one that came with your Laptop.

The wattage of the original charger should be printed on the bottom or side of your Laptop so it’s easy to identify what you need. If the voltage matches a lower-wattage charger, then there may not be any problem in using it.

However, if the voltage is higher than your laptop needs, it could cause problems. Using the charger that came with your Laptop is always recommended, as it has been specifically designed for the device and would be the safest option.

It’s important to note that using a lower-wattage charger may take longer to charge your Laptop if you’re using multiple power-hungry applications.

Also, a lower-wattage charger may need to provide more power to run your Laptop for extended periods. This could lead to it shutting down abruptly due to a lack of energy or even damaging the battery in the long term.

How Much Power Does My PC Need?

When charging your Laptop, you need to understand your device’s power requirements. Every Laptop has specific power requirements, usually listed in the manual that came with it.

The wattage your PC wants will depend entirely on your PC’s specs.

The central processor unit (CPU) and the graphics processing unit (GPU) are the two components that use the most power (CPU).

What is the minimum wattage to charge a laptop?

Generally, the minimum wattage requirement is 29 watts or 31 watts to give a laptop more power than it consumes. This, of course, will vary depending on how intensive your power consumption is.

What destroys laptop batteries?

It Includes undercharging, overcharging, and heat. These are the main culprit of battery degradation, as it doesn’t allow your Laptop to charge to its maximum capacity. A laptop’s internal temperature, which can exceed 110 degrees Fahrenheit, is hell for the battery.

Are laptops faster when they are plugged in?

A laptop battery’s lifespan can be extended by keeping it partially charged for most of the time. Whether your Laptop is plugged in or using battery power can also affect the environment.

Lower wattage charger


In conclusion, Many people ask about a lower-wattage charger. So, the answer is Yes, you can use it, But it’s not recommended because it can shorten the lifespan of your battery.

If you have a 65-watt charger and your Laptop only needs 45 watts, it’s okay to use the 65-watt charger. But if you have a 45-watt charger and your Laptop needs 65 watts, you should get a new one.


If the wattage is higher than the original, it won't hurt anything Laptop will draw only the amount of power it needs. The extra wattage does not increase performance or speed up charging time, so you can safely use the higher-wattage charger without damage to your Laptop.

Your Laptop's battery will be damaged if you use a charger from a different manufacturer. Your Laptop's battery will reject the charger. You should only use a charger manufactured for your device, even if another charger supplies the same power.

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