An 87-watt MacBook Pro charger, for example, can provide 20.2 volts at 4.3 amperes (87 watts), 9 volts at 3 amperes (27 watts), or 5.2 volts at 2.4 amperes (12.5 watts)..
Considering this, can I use a lower wattage charger for my MacBook?
So while you can use the 85-watt adapter to safely charge the smaller white MacBook, Apple advises against using an adapter with a lower wattage to charge a laptop battery that normally uses the 85-watt charger.
Furthermore, which MacBook power adapter do I need? 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.
Also question is, can I use a 60w charger on MacBook Pro?
By default, the MacBook Pro uses an 85W power adapter, while the MacBook uses a 60W power adapter. Both adapters use the same MagSafe connection point that will fit either model. It will provide ample power to both the MacBook Pro and MacBook, and will not damage the latter despite a higher-than-necessary wattage.
How do I know what wattage my laptop charger is?
Look at the identification label on the side of your AC adapter. Write down the total number of volts and the total amperage the AC adapter uses. If these numbers are not listed on the side of the AC adapter, they will be listed in the manual that came with the device that uses the AC adapter.
Related Question Answers
Why are Apple Chargers so expensive?
"Apple's power adapter is clearly a high-quality power supply designed to produce carefully filtered power. Apple has obviously gone to extra effort to reduce EMI interference, probably to keep the charger from interfering with the touchscreen. "Apple's iPhone charger crams a lot of technology into a small space.What's the difference between 60w and a 85w MacBook charger?
Despite that, there is still a major difference between the 60W and 85W Macbook charger. It is the amount of power they can deliver to the laptop. It delivers 25W more power or 40% more than the 60W charger. An increased amount of power delivered to the Macbook lets you charge at a faster rate.Can any USB C cable charge MacBook?
If it's off, you can use practically any USB C power brick. If it's on, and no other USB C devices are attached, it can easily use 60W of power, if under heaviest possible load, so anything 60W or lower will not let it charge, and lower may mean it just shuts itself off when it runs out of power in the battery.Does wattage matter for MacBook pro charger?
You can charge using a higher wattage than is permitted, but you should not use a lower wattage. For instance, the MacBook Pro 13 inch uses a 60W MagSafe, but you can use an 85W MagSafe to charge or power it (although it will not charge any faster).Can I use a higher watt charger for my laptop?
The short answer is yes you can use a laptop charger with a higher wattage, however, there are some caveats. The wattage rating of a laptop charger is a maximum rating which means that the charger is capable of providing power up to the output wattage rating and or course anything in between.Can I charge my MacBook Pro with a 45w charger?
You can safely use the 85W adapter on any Mac, it will only draw as much power as it needs. The 45W adapter from the MacBook Air may just about manage to power your MacBook Pro but it won't charge it. It will not damage your Mac, but you may notice the battery may still deplete when using it.Can I use a 60w charger on MacBook Air?
Answer: A: You can use it. “Power adapters for Apple notebooks are available in 45W, 60W, and 85W varieties. You can use a higher wattage adapter without issue, but doing this won't make your computer charge faster or operate any differently.Can I use a different charger for my MacBook?
The way Apple power adapters are designed is that you can use any charger on any laptop that has the same, or lower, power rating. For example, you can safely use an 85W power adapter (for MacBook Pro) on a MacBook Air (which requires only 45W) or MacBook (which requires 65W).Is it safe to use 60w MagSafe with MacBook Pro?
Yes, it's perfectly safe. You can use any Apple Magsafe adapter with any Macbook/Pro/Air. If you use a Magsafe adapter that is higher rated than what is required, it will simply not deliver as much power as a higher rated model would (by design).Can I use a 30w charger for MacBook pro?
The Apple 30W USB-C Power Adapter offers fast, efficient charging at home, in the office, or on the go. While the power adapter is compatible with any USB-C–enabled device, Apple recommends pairing it with the 12-inch MacBook or the 13-inch MacBook Air with Retina display for optimal charging performance.How many watts does it take to charge a MacBook Pro?
60-65 watts
What is the difference between MagSafe and magsafe 2?
The "MagSafe 2" power connector on all 13-Inch (A1425, A1502) and 15-Inch (A1398) Retina Display MacBook Pro models as well as the "Mid-2012" and subsequent MacBook Air models is similar to the earlier "MagSafe" connector, and it works in the same way, but they are not the same size nor are they interchangeable.Can I charge my MacBook Pro with iPhone charger?
The same adapter can be used to charge either system, although the smaller version will charge the battery slower. Plugged into USB-C on the new MacBook Pro models (or its higher watt power adapter), both iPhones and iPad will charge as fast as they can (but no faster).Can I use an 85 watt charger on a MacBook Pro 13 inch?
No the adapter is RATED to put out UP TO 85 watts. It does not supply that wattage constantly. So you are safe to use a 85 watt adapter on the 13" MBP that originally came with the 60 watt adapter. "Power adapters for Intel-based Apple portables are available in 45W, 60W, and 85W varieties.Will any USB C charger work with MacBook Pro?
Will any USB C charger work with the 2017 MacBook Pro? Not really. Depending on whether you have a 13 or 15 inch, you need 60 or 85 watts of power. USB C chargers meant for cell phones will either not charge it at all, or charge it so slowly that the laptop will use more power than the charger provides.Can I plug my MacBook into 220v?
Yes all you need is a plug adapter to convert to the correct plug style. You can either use the world travel set from Apple or by just a plug adapter that the MagSafe will plug into. I concur with the previous poster, it works just fine on 220v as long as you have a converter plug for the electric outlet.Can you charge a MacBook without a charger?
If you mean “can you charge macbook without magsafe charger”, sure yes you can. But you still need some kind of charger to charge the lithium ion batteries. Easiest macbook pro to charge without magsafe charger are those macbook pros with removable batteries (early 2009 and before).Do all Macbooks have same charger?
All replies Not all MacBook chargers are the same. Through the various generations, the DC output connectors and voltages have changed. If the charger has a MagSafe connector, it can be used with your computer safely.Does Apple replace laptop chargers?
Apple is replacing MacBook USB charging cables for free Apple will replace those cables for free if you bring them into an Apple Store or contact Apple Support. Apple will provide a new, redesigned USB-C charge cable, free of charge, to all eligible customers. 
