Power adapters for Mac notebooks are available in 29W, 30W, 45W, 60W, 61W, 85W, 87W, and 96W varieties. You should use the appropriate wattage power adapter for your Mac notebook. You can use a compatible higher wattage power adapter without issue, but it won't make your computer charge faster or operate differently. If you use a power adapter that is lower in wattage than the adapter that came with your Mac, it won't provide enough power to your computer.
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Mac notebooks that charge via USB-C come with an Apple USB-C Power Adapter with detachable AC plug (or 'duckhead'), and a USB-C Charge Cable.
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Mac notebooks that charge via MagSafe come with an AC adapter with MagSafe connector and detachable AC plug, and an AC cable.
The images below show the style of adapter that comes with each MacBook, MacBook Pro, and MacBook Air. If you're not sure which model Mac you have, use these articles:
USB-C
Apple 29W or 30W USB-C Power Adapter and USB-C Charge Cable
- MacBook models introduced in 2015 or later
Apple 30W USB-C Power Adapter and USB-C Charge Cable
- MacBook Air models introduced in 2018 or later
Apple 61W USB-C Power Adapter and USB-C Charge Cable
- 13-inch MacBook Pro models introduced in 2016 or later
Apple 87W USB-C Power Adapter and USB-C Charge Cable
- 15-inch MacBook Pro models introduced in 2016 or later
Apple 96W USB-C Power Adapter and USB-C Charge Cable
- 16-inch MacBook Pro models introduced in 2019
Make sure you're using the correct USB-C charge cable
For the best charging experience, you should use the USB-C charge cable that comes with your Mac notebook. If you use a higher wattage USB-C cable, your Mac will still charge normally. USB-C cables rated for 29W or 30W will work with any USB-C power adapter, but won't provide enough power when connected to a power adapter that is more than 61W, such as the 96W USB-C Power Adapter.
You can verify that you're using the correct version of the Apple USB-C Charge Cable with your Mac notebook and its USB-C AC Adapter. The cable's serial number is printed on its external housing, next to the words 'Designed by Apple in California. Assembled in China.'
- If the first three characters of the serial number are C4M or FL4, the cable is for use with an Apple USB-C Power Adapter up to 61W.
- If the first three characters of the serial number are DLC, CTC, FTL, or G0J, the cable is for use with an Apple USB-C Power Adapter up to 100W.
- If the cable says 'Designed by Apple in California. Assembled in China' but has no serial number, you might be eligible for a replacement USB-C charge cable.
MagSafe 2
85W MagSafe power adapter with MagSafe 2 style connector
- 15-inch MacBook Pro models introduced in 2012 through 2015
60W MagSafe power adapter with MagSafe 2 style connector
- 13-inch MacBook Pro models introduced in 2012 through 2015
45W MagSafe power adapter with MagSafe 2 style connector
- MacBook Air models introduced in 2012 through 2017
About the MagSafe to MagSafe 2 Converter
If you have an older MagSafe adapter, you can use it with newer Mac computers that have MagSafe 2 ports using a MagSafe to MagSafe 2 Converter (shown).
MagSafe 'L' and 'T' shaped adapters
60W MagSafe power adapter with 'T' style connector
- 13-inch MacBook Pro models introduced in 2009
- MacBook models introduced in 2006 through mid 2009
60W MagSafe power adapter with 'L' style connector
- 13-inch MacBook Pro models introduced in 2010 through 2012
- MacBook models introduced in late 2009 through 2010
85W MagSafe power adapter with 'T' style connector
- 15-inch MacBook Pro models introduced in 2006 through 2009
- 17-inch MacBook Pro models introduced in 2006 through 2009
85W MagSafe power adapter with 'L' style connector
- 15-inch MacBook Pro models introduced in 2010 through 2012
- 17-inch MacBook Pro models introduced in 2010 through 2011
45W MagSafe power adapter with 'L' style connector
- 13-inch MacBook Air models introduced in 2008 through 2011*
- 11-inch MacBook Air models introduced in 2010 through 2011
* Adapters that shipped with the MacBook Air (Original), MacBook Air (Late 2008), and MacBook Air (Mid 2009) are not recommended for use with MacBook Air (Late 2010) models. When possible, use your computer's original adapter or a newer adapter.
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Learn more
You can get extra or replacement adapters with AC cord and plug at the Apple Online Store, an Apple Reseller, or an Apple Store.
A replacement adapter might not be the same size, color, shape, or wattage as the original adapter that came with your computer. But it should power and charge your Mac like the adapter that originally came with your computer.
How Many Watts For Macbook Pro
If you need help using your MagSafe adapter, see Apple Portables: Troubleshooting power adapters.
If you're looking for a PowerPC-based power adapter, see PowerPC-based Apple Portables: Identifying the right power adapter and power cord.
What’s your desktop Mac doing when you’re not using it? Depending on your settings and usage habits, you could be wasting both power and your own time. We’ve found that some people have out-of-date beliefs about their Macs’ different idle-time states. Let’s set the record straight.
First off, every Mac has three basic states: active, sleeping, and shut down. Desktop Macs use the most power when active, of course, and although details vary by model, a 27-inch iMac idles at about 60 watts and maxes out at 240 watts, averaging about 100 watts in regular usage. The Mac Pro is a bit less, since it doesn’t have a screen, and the Mac mini idles at a measly 6 watts and tops out at 85 watts. If you think back to the incandescent light bulb days, you can see that a modern Mac uses roughly the same power as an old-style light bulb. Not bad!
However, that 100 watts is huge compared to the trickle of juice that a Mac requires when sleeping—just about 1 watt for most models (the Mac Pro is the most restless sleeper at 2.8 watts). So you can reduce your Mac’s power usage a hundred-fold or more by allowing it to sleep automatically in System Preferences > Energy Saver.
The key here is to make sure the first checkbox—“Prevent computer from sleeping automatically when the display is off”—is notselected. It’s also good to set a relatively short time for the “Turn display off after” slider unless you spend a lot of time watching your screensaver or want to make sure the screen doesn’t go black when you’re giving a presentation.
Of course, you can always choose Sleep from the Apple menu, press the Power button for 1.5 seconds, or press Control-Shift-Eject (or Power, if your keyboard has that key) to put your Mac to sleep right away, but, it’s easier to let Energy Saver do it for you.
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Watts For Macbook Air Charger
Some people have avoided letting their Macs sleep because of the amount of time it takes for the Mac to wake up and be usable again. That may have been a more significant issue in the distant past, but modern Macs are usually ready for action within a few seconds at most.
What about shutting your Mac down? Surely that doesn’t use any power at all. Actually, no. Every Mac uses about .25 watts of power when it’s turned off but still plugged into an outlet. And while it might seem worthwhile to save that .75 watts for when you’re not using your Mac overnight, you have to factor in the extra power that’s wasted while shutting down and starting back up, both of which are power-intensive activities. In fact, depending on how many apps have to quit and reload, shutting your Mac down every night may not result in any power savings over sleep. Plus, you’re wasting time while waiting for it to boot up again—especially if you’ve asked macOS to reopen windows on startup—so it’s a double whammy.
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That said, since an occasional restart can prevent or eliminate funky behavior, consider shutting your Mac down if you’re not planning to use it for a few days, perhaps on weekends. You’ll use a tiny bit less power over the weekend, and the Mac will be fresh and ready to go on Monday morning. That will get you the best combination of reliability, instant access, and power savings.