How Many Watts to Charge a Laptop in June-2022 [With a Practical Answer]

How Many Watts to Charge a Laptop

A mobile device like a laptop indeed takes less charge than a desktop PC. Full battery charge depends on laptop battery capacity and some other factors. You may know that a laptop battery keeps 70% charges and also provide 30% charges for sharing other things.

So, how many watts to charge a laptop? It depends on your laptop battery capacity, size, charging cable, adaptor, and a couple of things. But, a standard laptop battery takes to charge a laptop battery varies between 20W to 50W. It may increase or decrease.

Are you still finding yourself puzzles to get this short answer? If yes, you can check out the following article to get a detailed answer. So, without talking more, let’s get started.


How Many Watts to Charge a Dell Laptop?

There are plenty of Dell laptops you may discover on the market whose charging capacity is different. Undoubtedly, dell always provides its customers with a fast-charging option with the adapter so that the customers get a fast-charging option. But, how much wattage to charge laptop?

Well, a standard-level Dell laptop needs 45-watts to 90-watts to safely charge. It is a safe charging range. But, you can use these watts for charging your laptop without uncleaned data. You can also use more or fewer watts which the Dell manufacturer told you in the user manual.


How Many Watts to Charge Laptop in Car?

We may fall great problem when our laptop or mobile nearly finished charging, and we are outside of the inside of the car. However, a 15-amp socket will power 1.5-amps of 120-volt AC (nearly 50 to 180 watts). However, you can also check out your car user manual to know the amp. But, most of the car socket comes with 15-amp power.

So, it is clear that your car provides your laptop with 50 to 180 watts of power for charging. If you think that it is too much, then you can change the socket. I hope that you can understand to charge your laptop in a car.

How Many Watts To Charge HP Laptop?

First of all, you need to measure your laptop size to know how many watts are actually needed to charge your HP laptop. Generally, HP laptop charger wattage is engineered lightweight and runs battery power. On the other hand, a desktop takes high power, but an HP laptop doesn’t need a high amount of power. Moreover, how many watts to charge a laptop computer? It needs higher.

However, if the battery was low and the laptop was plugged in, it may need 99-watts of power or 52 watts for charging the battery. But, when the battery was off but still charging, then it may take 57-watts of power. I think this information is enough for you.

How Many Watts To Charge Apple Laptop?

Though Apple already has produced lots of laptop model, most of the laptop comes with the same watts of charging power. It doesn’t matter whatever models you are using. You may know that mac also used electricity mode to use the laptop.

On the other hand, most Apple laptop comes with a 60-watt or an 85-watt power adapter to charge the device. You will discover these three different power watts in an Apple laptop. You can also know the Apple laptop charging watts in your user manual.

How Many Watts to Charge a MacBook Pro?

Different MacBook Pro needs different watts of power. If you need a complete idea about this matter, you are coming to the right place. However, I have made a complete table for you that helps you to understand which MacBook Pro takes how many watts of power. So, let’s check out the following table.

MacBook Pro Model

Included-charger wattage

MacBook Pro (14-inch)

67 W/96 W

MacBook Pro (15-inch)

87 W

MacBook Pro (16-inch, 2019)

96 W

MacBook Pro (16-inch, 2021)

140 W

I hope that this table helps you a lot to understand how many watts are required to charge a laptop. If you are still confused about this matter, you may let me know the following comment box.

Frequently Ask Questions

Q: Is 60W enough to charge a laptop?

A: The official answer is yes, a 600W power is enough to charge a laptop. But, you may also need to keep in mind that the watts of power also depends on the laptop’s size and adapter.

Q: Can a 30w charger charge a laptop?

A: Yes, you can charge your laptop with 30W without any hassles. But, it may take some extra time to take charge of a laptop. I would love to recommend you choose an adapter that comes with a minimum of 50W to charge the device so fast.

Q: Is 15W enough to charge a laptop?

A: If you charge a 45Wh battery with 15W, it may take 3-hours to charge the battery fully. It is true that 15W is capable of charging the laptop but slowly. I hope that you may get your question answered.

Q: Can I use a 90-watt charger on a 120-watt laptop?

A: Of course, you can charge a higher watt laptop to use a lower watt charger. If you want to use the 90-watts charger with a 120-watt laptop, you can easily do this without any hassles. Don’t worry; it doesn’t produce any risk things.

Q: Can you charge a laptop with 20W?

A: No doubt, a 20W charger is enough for charging a laptop. It is also working fast than a 15W charger. So, without thinking anymore, you can use this type of charger.

Q: Can I use a 90-watt charger on a 65-watt laptop?

A: According to my experience, you can use a 90-watts of charger on a 65-watts a laptop without any hassles. It also provides you fast charging experience.

Q: Can I use a 65-watt charger on a 45-watt laptop?

A: The straightforward answer is yes, you can use a 65-watt charger on a 45-watts laptop without any hassles. You can use a higher watts charger with lower watts laptop without any hassles.

Q: Can I use a 19.5 V charger on an 18.5 V laptop?

A: Yes, you can use a 19.5 V charger on an 18.5 V laptop. But, my personal recommendation is that you should use an 18.5 V charger to get a risk-free service.


If you still have this question how many watts to charge a laptop in your mind, you can clearly understand that the standard charging watts are 20W to 50W. However, you can use more or less based on your laptop capacity. Most important, you can see the user manual to know the watts of power.

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Andrew S. Beamer

Hi I am Andrew, tech and gadget lover. Wow Tech Ideas is dedicated to delivering actionable tips and information when it comes to tech info. Whether it's buying or upgrading gadgets, I want to help anyone get the right product value for money.

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