Mac

Ask Mac Questions and Get Answers from Experts ASAP

Ask a Computer Expert,
Get an Answer ASAP!

This answer was rated:

I bought a new charger for my MacBook pro 2017. It was

Hi I bought a new...
Hi I bought a new charger for my MacBook pro 2017.
It was expensive so I'll probably get 3rd party one online. The Apple version says 87W. Some of the others say 85W or 90W. How important is it that it's exact? I don't know the implications.
Would the 'wrong' wattage damage the laptop? Would it charge it slower/faster? No difference? Thanks!
Show More
Show Less
Ask Your Own Mac Question
Answered in 20 minutes by:
10/21/2017
Jeremy K
Jeremy K, Mac Enthusiast
Category: Mac
Satisfied Customers: 50
Experience: From IIGS to Mac Pro... still going after 20 years
Verified

Hi, my name is ***** ***** I will do my best to help you today. To make sure I don't miss anything, please give me a minute to review your question.

Ask Your Own Mac Question

Great question - those chargers are a bit ridiculously expensive. The small difference in wattage doesn't actually matter. With the way that voltage works physically, it will only draw the amount of wattage that it can maximally handle, so your mac will take whatever it can get. You can actually charge that laptop with one of the smaller chargers (60 watt etc.), but it will take an eternity.

The more crucial thing, however, with the aftermarket chargers is that these can truly fry your mac's logic board if they go haywire, so genuinely worth considering whether this is too risky an area to go after-market. Will leave it up to you, but at least you'll know the wattage doesn't matter, especially when the difference from stock is only ~1-3 watts

Ask Your Own Mac Question

My goal is to provide you with excellent service – if you feel you have gotten anything less, please reply back, I am happy to address follow-up questions. If you're satisfied with this answer, please take a moment to confirm this answer and rate my service. Thank you for your business!

Ask Your Own Mac Question
Customer reply replied 8 months ago
Thanks Jeremy...i'm not holding you to anything but what's the likelihood this aftermarket chargers would damage the logic board..what would it go haywire? It's just ushering in electricity after all...

It's impossible to predict, but the components that can be had more cheaply relate specifically to the gauge of wire and protections from overloading, so very directly related to safety. I can only say that I've had one short out on me and it was a rather dramatic bang and brief fire about three months after purchase. The laptop was fine, but that was a bit of a miracle. It was enough to prevent me from getting another. :) The thing to watch out for with the aftermarket devices is any signs of overheating (discolouration etc.)

Jeremy K
Jeremy K, Mac Enthusiast
Category: Mac
Satisfied Customers: 50
Experience: From IIGS to Mac Pro... still going after 20 years
Verified
Jeremy K and 87 other Mac Specialists are ready to help you
Ask your own question now
Customer reply replied 8 months ago
ok thanks!
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mac support specialistLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Jeremy K Your Own Question
Jeremy K
Jeremy K
Jeremy K, Mac Enthusiast
Category: Mac
Satisfied Customers: 50
50 Satisfied Customers
Experience: From IIGS to Mac Pro... still going after 20 years

Jeremy K is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Hi John, Thank you for your expertise and, more important, for your kindness because they make me, almost, look forward to my next computer problem. After the next problem comes, I'll be delighted to correspond again with you. I'm told that I excel at programing. But system administration has never been one of my talents. So it's great to have an expert to rely on when the computer decides to stump me. God bless, Bill

Bill M.Schenectady, New York

The Expert answered my Mac question and was patient. He answered in a thorough and timely manner, keeping the response on a level that could understand. Thank you!

FrankCanada

My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed.

One Happy CustomerNew York

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

< Previous | Next >

Meet the Experts:

Mike

Mike

Mac Medic

8,567 satisfied customers

Over 20 years IT experience with Apple computers in publishing, marketing and design.

Daniel

Daniel

Mac Genius

4,711 satisfied customers

Apple certified on desktop and portable, help desk qualified. Have owned and used Macs since 1989.

Vinod Menon

Vinod Menon

Support Specialist

2,495 satisfied customers

worked as a Tech support Associate for Apple products

John T. F.

John T. F.

Apple Consultant

2,386 satisfied customers

20+ years in the computer/Mac industry

David

David

Mac Support Specialist

1,641 satisfied customers

BSc H.Dip Apple Certified Professional

Claws224

Claws224

IEEE Datacommunication Engineer

965 satisfied customers

IEEE, Microsoft

Mac Tech

Mac Tech

Apple Specialist

888 satisfied customers

7 + Years Supporting Apple Products

< Previous | Next >

Related Mac Questions
I can't remember my Apple ID. I don't recall ever changing
I don't recall ever changing it. I simply can't find or remember it. … read more
John T. F.
John T. F.
Apple Consultant
Two Decades Field Experience
2,386 satisfied customers
I misplaced my phone how can i find it. Apple7 i dont know
I misplaced my phone how can i find it JA: What's the brand/model and Operating System (OS) of your smartphone? Customer: apple7 i dont know what o/s is JA: How long has this been going on with your s… read more
Ricky Expert
Ricky Expert
Bachelor\u0027s Degree
1,087 satisfied customers
Help to get my apple verification ID. Apple ipad Air 64GB
apple ipad Air 64GB purchased purchased May 2014. It has been given to me by a family member who reverted it back to factory standard & I've yet to use it. … read more
Jon
Jon
Bachelors Degree
666 satisfied customers
How do a change a pages doc to a pdf. I am operating on a
I am operating on a mac book and pages is what i have been using … read more
Bhavik Joshi
Bhavik Joshi
Computer Science and Engineering
894 satisfied customers
I received a message from aPPLE REGARDIMG A PURCHASE MADE
I received a message from aPPLE REGARDIMG A PURCHASE MADE JUNE 14 … read more
Bhavik Joshi
Bhavik Joshi
Computer Science and Engineering
894 satisfied customers
I cannot remember my Apple Ipad password. My Apple ID is. I
I cannot remember my Apple Ipad password. My Apple ID is***@******.***. I have spoken to Kelly previously but was not able to complete the process. … read more
John T. F.
John T. F.
Apple Consultant
Two Decades Field Experience
2,386 satisfied customers
I am told my iPad storage is full. I have been deleting many
I am told my iPad storage is full. I have been deleting many photos and videos but it has not made any difference. It is still full. … read more
Justin Johnson
Justin Johnson
Founder
2,144 satisfied customers
I have been having big trouble trying to follow instructions
I have been having big trouble trying to follow instructions so need someone to be patient with me as I am not tech savvy. … read more
Mike Taylor
Mike Taylor
44 satisfied customers
Want to recover old account. Very important. having trouble.
Want to recover old account. Very important. having trouble. lost some important information. … read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,439 satisfied customers
How can I stay logged in on my Gmail. It keeps logging out
How can I stay logged in on my Gmail. It keeps logging out and I miss emails. … read more
D.Sandlin
D.Sandlin
Support Technician
6,708 satisfied customers
I have an Apple I Pad. The Safari browser has stopped
I have an Apple I Pad. The Safari browser has stopped working. A message appeared from Apple Support telling me to call 1-***-***-****. when io called I was told a hacker was trying to get into my sys… read more
Shefin
Shefin
Technical Support Executive
Engineering Diploma
222 satisfied customers
IPAD 2 - ACTIVATION LOCK ; DON'T KNOW APPLE ID OR PASSWORD.
iPAD 2 - ACTIVATION LOCK ; DON'T KNOW APPLE ID OR PASSWORD. DO HAVE THE PASS CODE . DAUGHTER GAVE IT TO ME . DID A PROGRAM UPDATE INSTALL . CAN'T GET PASSED ACTIVATION LOCK … read more
D.Sandlin
D.Sandlin
Support Technician
6,708 satisfied customers
I,ve finished one book and I can't get back to the screen
I,ve finished one book and I can't get back to the screen with all my other titles … read more
John Castle
John Castle
BSC in Computing Network Management and Design
78 satisfied customers
I dont remember my pastword or ID how can i retrieve them.
i dont remember my pastword or ID how can i retrieve them … read more
John T. F.
John T. F.
Apple Consultant
Two Decades Field Experience
2,386 satisfied customers
I am able to scan a photo on my mac air with my epson but am
I am able to scan a photo on my mac air with my epson but am unable to find the photo on my mac. Would prefer to have a live person walk me through the steps. … read more
Jason Jones
Jason Jones
AAS Information Technology
6,324 satisfied customers
The ringtone switched to a default on its own and even tho'
the ringtone switched to a default on its own and even tho' the one i want is checked, it won't use that ringtone. what do i do? … read more
Jon
Jon
Bachelors Degree
666 satisfied customers
I have a mac and it keeps telling me the wacom driver is
I have a mac and it keeps telling me the wacom driver is affecting illustrator which starts in save mode. i say it cannot find the wacom driver. I have never used a wacom driver and cannot find the wa… read more
Sheri
Sheri
Bachelor\u0027s Degree
565 satisfied customers
I just received a apple ipad and I can not get on it keeps
I just received a apple ipad and I can not get on it keeps asking for apple pass word I do not know it … read more
Karthik
Karthik
Senior Engineer
Bachelor of Engineering
103 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x