What Wattage Power Adapter Do You Need for Your MacBook Air 2018?

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Are you looking to get a new MacBook Air 2018 but confused about the wattage requirements? Don’t worry, we’ve got you covered! In this blog post, we’ll explain what wattage is and how much wattage your Macbook Air 2018 needs.

Wattage is the amount of power needed to run your laptop and its components. It’s measured in watts (W). Different components require different amounts of wattage, so it’s important to make sure you select the correct wattage for your needs.

The MacBook Air 2018 ships with either a 30W or 35W power adapter. However, Apple recommends at least a 45W charger for optimal performance. You can safely use a power adapter or display with higher or lower wattage than the one included with your Macbook Air, as long as it meets the required voltage and current requirements.

It’s also important to note that while any power adapter with a higher wattage than what’s recommended will work, it won’t necessarily make your computer charge faster or operate any differently. So if you have an extra power adapter lying around, it’s okay to use it with your Macbook Air 2018 – but don’t expect any improvements in performance or charging time!

Finally, if you’re looking for replacement power adapters for the Macbook Air 2018, they are available in 45W, 60W, and 85W varieties. The appropriate wattage will depend on your individual needs – so make sure you select the correct one for maximum efficiency and performance!

We hope this blog post has helped clear up any confusion about what wattage is necessary for the MacBook Air 2018. If you have any further questions about powering your device feel free to reach out – we’re always here to help!

What Wattage Power Adapter Do You Need for Your MacBook Air 2018? 1

Power Consumption of a MacBook Air

The MacBook Air can use up to 45W of power, depending on your model. The Intel-based and M1/M2 models come with either a 30W or 35W Power Adapter, but we recommend at least a 45W charger for the best performance. When plugged in, the MacBook Air can draw up to 19.5W of power (for the 13-inch model) or 28W of power (for the 16-inch model). However, when running on battery power, it will use much less than that.

Using a 60W Charger on a 45W MacBook Air

Yes, you can use a 60W charger on a 45W MacBook Air. However, while it will still charge your device, it won’t be as efficient as using the 45W adapter that came with the laptop. The higher wattage adapter may not be able to provide enough power for the laptop to run at its full performance level and could potentially cause damage if used for extended periods of time. We recommend sticking with the 45W adapter that came with your device for optimal performance and safety.

Using a 65W Charger for a MacBook Air

Yes, you can use a 65W charger for your MacBook Air. USB-PD (Power Delivery) power adapters are designed to negotiate with the device and determine the proper voltage, so it should be safe to use. Additionally, your MacBook Air has its own power management system that helps regulate how much current is taken. All in all, using a 65W charger should be perfectly fine and should not cause any damage to your device.

Is a 60W Charger Suitable for a MacBook Air?

Yes, a 60W power adapter is perfectly fine to use with your MacBook Air. It will provide enough power for you to charge your device and use it as normal. However, it’s important to note that using a higher-wattage adapter won’t make your computer charge faster or operate any differently. Therefore, you should always use the appropriate wattage power adapter for your Apple notebook.

Can I Use a 100W Charger for a MacBook Air?

Yes, you can use a 100W charger for your MacBook Air, but it’s important to choose the right one. The Nekteck 100W charger is a great option. It offers fast charging speeds and comes with a USB-C cable, making it perfect for your MacBook Air. This charger is also suitable for more power-hungry laptops, so you can use it with other devices if needed.

macbook air 2018 wattage
Source: walmart.com

Can the MacBook Air Be Charged With 20W?

Yes, the Apple 20W power adapter is compatible with your MacBook Air and can be used to charge it. It features a USB-C port that delivers high-speed charging of up to 20 watts, which is more than enough to charge your MacBook Air quickly. Additionally, this power adapter is much smaller and more lightweight than other adapters, so it won’t add too much weight or bulk to your carry-on luggage.

Can I Use a 65W Charger for a 45W MacBook Air?

Yes, you can use a 65W charger instead of the 45W charger that came with your MacBook Air. The higher wattage will not cause any damage to your device, but it may charge it faster than the 45W charger. It is important to note that using a lower wattage adapter than what is recommended for your Mac in the user manual can damage the device and void any warranty, so if you are unsure you should always refer to the user manual for your specific model.

Can a 45W Charger Be Used to Charge a MacBook Air?

Yes, you can charge your MacBook Air with a 45W charger. This is the perfect wattage for charging your MacBook Air and will work best. It is important to note, however, that it won’t work with the 61W 13-inch MacBook Pro or the 85W 15-inch MacBook Pro. The higher wattage of these models requires a charger with more power output than a 45W charger can provide.

Can I Use a 65W Charger Instead of a 45W Charger?

Yes, you can use a 65w charger instead of a 45w charger as long as it has the same voltage and connector type. The wattage of a power supply is a measure of the amount of power it can provide, so using a higher-wattage adapter will not harm your computer. However, if your computer requires less than the supplied amount of power by the 65w adapter, then you will be wasting energy and money.

macbook air 2018 wattage
Source: support.apple.com

Using an 85 Watt Charger on a MacBook Air

Yes, you can use the 85w MagSafe charger on your MacBook Air – it is compatible with the device. However, it won’t charge your computer any faster than the 60w charger that comes with the laptop. The machine will regulate what it needs, and drawing more than necessary power from the 85w charger won’t cause any issues.

Using 61W USB C Power Adapter With MacBook Air

Yes, you can use a 61W USB-C power adapter with your MacBook Air (M1, 2020). This charger will provide enough power to charge your computer quickly and efficiently. It is also compatible with most USB-C charging cables, so you won’t have to buy a new cable when using this adapter. As an added bonus, it is designed to be compact and lightweight for easy portability.

Can I Use an 80W Charger on a MacBook Air?

Yes, you can use an 80w charger on your MacBook Air. It won’t damage the computer, and it will charge the battery just fine. The only caution is that you should not use a charger with a higher wattage than what your laptop was designed for. For example, don’t use a 45w charger on a machine that requires an 80w charger. Other than that, using an 80w charger should be no problem at all.


In conclusion, when using a MacBook Air 2018 it is best to use the power adapter and cable that came with your device. This will provide the best charging experience and ensure that your device is receiving the correct wattage. If you are using a different power adapter, make sure it is at least 45W for Intel-based models or 35W for M1/M2 models. Higher wattage adapters can be used safely but won’t make your computer charge faster or operate any differently.

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James Walker

James Walker has a deep passion for technology and is our in-house enthusiastic editor. He graduated from the School of Journalism and Mass Communication, and loves to test the latest gadgets and play with older software (something we’re still trying to figure out about himself). Hailing from Iowa, United States, James loves cats and is an avid hiker in his free time.