Questions tagged [battery]

Concerning devices that store electrical power which can be used to run various devices in the absence of external power.

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36 views

Are these temperatures normal?

I have a 13-inch, Mid 2012 Macbook Pro that constantly overheats. Normally, the only app I will be using will be Google Chrome and I will still experience these temperatures. But occasionally I use ...
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24 views

Can I use a powerbank to charge a turned off macbook?

If its allowed I'll link an example case. Powerbank Output:DC 5V/2.4A, Type C 5V/3A. Laptop is 2015 MBP 13". Someone told me it's MagSafe 2 power socket won’t charge with anything lower than about ...
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37 views

Is there ANY disadvantages of charging MBP 13" with a powerbank that outputs 10W?

Device is Macbook Pro 2015 13". It has 74.9 Wh battery. Its original adapter is 60W. While charging the device will stay turned off. If its allowed, I'll link an example powerbank. Its 25000mAh / 92....
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273 views

USB to MagSafe 2 Adapter

In case of an emergency, I'd like to use my solar powerbank to charge my Macbook 2015 13". It outputs 2.1A 5V, and I learned that the MBP can be charged with that, but I don't know if that's actually ...
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24 views

Does Macbook Pro charging profile depends on electricity grid?

The questions might sound silly at first sight, but let me share my observations so far: I'm in the U.S. right now where I use the charger I got from IT and I see that my MPB charges slowly. It says ...
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15 views

MacBook Pro shows blank screen then shutdown [duplicate]

My MacBook Pro Retina (15inch Late 2013) shows blank black screen Shutdown randomly here are the logs can you tell the reason ?
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78 views

What are the requirements to charge a Macbook Air?

I have a 2017 13 inch MacBook Air, and I also have a big power bank. I am wondering, if it would be possible to charge my MacBook Air using that power bank. The power bank only has an output of 5V/2....
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44 views

Will Apple replace the battery on an iPhone 5s?

On Apple's service pricing page, it says you can replace the batteries on the following models of iPhone for £45: iPhone SE iPhone 6 iPhone 6 Plus iPhone 6s iPhone 6s Plus ...
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24 views

6 months old iPhone 6s battery disabled peak power

I had my iPhone 6s battery replaced by Apple in November last year (i.e. 5,5 months ago). Today the phone crashed and peak power was disabled again. Admittedly it was relatively cold outside (about 8°...
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64 views

Why is the iphone 6s battery inferior to the 7?

https://www.cnet.com/reviews/apple-iphone-6s-review/ CNET 2018 indicates the 6s has: Inferior battery life, camera performance and processor speed compared to newer iPhones. What exactly is ...
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49 views

MacBook Pro battery rapidly loses charge [duplicate]

I have a MacBook Pro Mid 2010 that I changed the battery and logic board on, a few moths ago. I have an issue with the battery that after a full charge and removing the charger plug the battery ...
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65 views

MacBook Pro 2018 Battery not correctly working

I have a problem with my MacBook Pro from December 2018. Yesterday the battery was fully charged when I shut it down and when I started it today it had 0 percent left. What could this mean? Is this a ...
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163 views

My AppleCare is about to expire with my battery at 81%. Is there a good way to get it to 79% so I can get a new battery?

AppleCare covers the replacement of a MacBook Pro battery if it drops below 80% capacity before 1000 cycles. I have until the end of the year and I'm at 81% and 300 cycles. It would be nice to get a ...
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3k views

Macbook Pro mid-2015 15" swollen battery

I bought the MBP around 2016 April. Few months ago, around 2018 Nov, bottom of the device appears a bit uneven, with slight gap with my desk. Over past few months, it wobbles more and more serious. ...
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252 views

Can I charge a power bank through charging MacBook

I have: 15" 2018 MacBook Pro with USB Type-C ports. Xiaomi PowerBank 3 Pro with 1 Type-C input/output and 2 regular USB outputs. Can I charge my MacBook via MagSafe, and simultaneously charge Xiaomi ...
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2answers
178 views

Used 2015 MBP Pro Retina dropped 300 mAh of Full Charge Capacity in three months

Back in February I bought an used 2015 MBP Retina and it had 251 battery cycles and 8440 mAh full charge capacity. Now after almost three months I felt like the battery life decreased a little bit and ...
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80 views

MacBook Pro keep on “unplugging” battery and need SMC/PRAM reset

I recently brought my 2015 13" MacBook Pro to an Apple center to get a screen replacement for Staingate. They did it for free. Before this replacement my MacBook was doing really good actually. After ...
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99 views

“Unbending” a Macbook Pro keyboard bent by swollen battery?

I have a late-2013 Macbook Pro. It's been working fine and meets my computing needs so I have seen no need to replace it. Recently though the Y, U, I and O keys have stopped functionally reliably. I ...
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457 views

What can I do if my MacBook isn’t charging but already ran out?

My 12" 2017 MacBook suddenly stopped charging, and I tried an SMC reset. However, the MacBook already ran out on the battery, and thus I think even the SMC reset did not work, since when I did it, it ...
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20 views

MacBook battery versus Tesla or Chevy Battery [duplicate]

I am curious to know from other users who are knowledgable with LiION batteries. I work on a MacBook and just recently got a new machine. From all my research of LiIon batteries, the optimal life to ...
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2k views

How to charge AirPods to keep battery healthy?

Once on the official Apple website it was written to keep iPhone's charge between 20% and 80% for better battery life. I've not found exact battery specs for the AirPods (I am about 2nd gen), ...
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140 views

MacBook Pro battery gets empty while lid is closed

For some time now I cannot left my MacBook Pro unplugged while I close the lid, or the battery will get empty overnight. I have MacOs 10.14.4 (18E226) on a MacBook Pro (13-inch, 2017, Four ...
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51 views

MacBook Air battery discharges overnight (April 2018)

My MacBook Air's battery sometimes discharges overnight. Not always, perhaps just 60% of the time. It is always on sleep (I just close the lid) and it is usually for 8-9 hours. I unplug it, close the ...
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31 views

2015 Macbook Won't Turn On - Shows no sign of life

I recently bought a 2015 Macbook from a friend, and after only a day of use, it won't turn on... I shut down the Macbook with around 15% charge left on it, so initially I thought this to be a lack-of-...
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iPad being using in wall mount battery swollen

Ive got an install with an iPad mini 4 installed in a wall mount running locked to a single app. The wall mount has a POE to USB adaptor built in. The iPad is powered by a TP link POE adaptor : https:...
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1answer
377 views

Trying to find out what is draining the battery on my MacBook Pro

I am trying to figure out what is draining battery on my Early-2015 Retina MacBook Pro overnight. I close the lid and leave it in sleep state overnight. The next morning, quite often I find that ...
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660 views

Apple MacBook Air battery

I noticed a very interesting aspect about the MacBook air's battery over the years. I bought a MacBook Air 2013, and recently I replaced it with the new MacBook Air 2018 13 inch Retina display. I ran ...
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1answer
324 views

Why is my new battery behaving weirdly?

Macbook Pro Early 2011 I am unable to understand why the battery is varying so much? It was just recently installed and is giving an excellent battery timing but this health difference is weird. Any ...
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1answer
39 views

Macbook battery runs flat while “charging” with nearly full USB Brick

Road warriors buy Macbooks for untethered working and at times find themselves in a place without a powerpoint. So charging a Macbook from a USB Brick is a fundamental operational requirement. I ...
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31 views

Should my MacBook be on charge most of the time? [duplicate]

For optimal battery health, should I charge my Mac most of the time, apart from letting it run through a full battery discharge once a month?
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1answer
76 views

When MacBook runs out of battery after restart message problem detected occurs

For some months I have the following problem: After a restart (when my MacBook Pro 2017) runs out of battery, and after having logged in, a message that the computer was shut down unexpectedly occurs. ...
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1k views

How can I check how many times an iPhone or iPad has been charged?

On my MacBook Pro, I can see in the About this Mac → System Report → Power link, how many times the laptop has been charged. It lists the condition (currently as "Normal") on my laptop. I've seen it ...
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27 views

How long does it take for an initial charge with MBP?

We unboxed a new 2017 MBP three hours ago. I wasn't expecting it to start by opening the lid. I then went through all the stuff you have to do when you startup (icloud, apple id, etc) It was at 34%. ...
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135 views

My MacBook Air (13-inch, 2017) does not go to sleep after Mojave update [10.14.3]

Ever since upgrading to the latest version of Mojave[10.14.3], my MacBook Air (MBA) (13-inch, 2017) refuses to sleep with the lid down in the default settings on battery power. This leads to severe ...
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1answer
1k views

Macbook pro disable charging when connected to external monitor via thunderbolt 3 port

I can connect external monitor to macbook via type C port. But the battery starts charging when I do so. This causes the laptop to always be charged at 100% (which is not good for battery life) How ...
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30 views

Can I add a jumper from charger to battery in a MacBook pro 2012 that is not charging?

The proposed solution to a non charging MacBook. Will this work? Add a jumper from charger to battery, this is to bypass current sensing circuitry and SMC. All, or some of which may be the root cause ...
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1answer
71 views

Macbook Pro (mid-2012) battery not identified (shows X) after SSD install

I recently upgraded my MacBook Pro (mid-2012) HDD to SSD. Once SSD install was complete, my macbook did not start, however when plugged into power, it started booting, and worked normally. The ...
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90 views

How to throttle CPU on a Mac? [duplicate]

How to throttle CPU on a Mac? I want to throttle CPU so that I can extend the battery life on a single charge. Device: MBP 2015. Running Majove.
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1answer
2k views

How should I interpret the full charge capacity (mAh) for a macbook battery?

in System Information it shows: "Full Charge Capacity (mAh): 7860". How should I interpret this figure?
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37 views

Can the amount of power Pandora uses be reduced?

My iPhone 8 is about a year old. I've run this test several times on it, recently, and months ago. I'm getting the same results I got on my old iPhone 6s. In my testing, I've used Apple Music, ...
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227 views

MacBook Pro USB disabled and dead battery. What to do?

I was constantly getting a notification that USB ports had been disabled due to an accessory using too much power. Most of the time there was nothing plugged in when I received the notification. So, ...
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2answers
162 views

iPhone suddenly drains battery quickly, but only sometimes

My iPhone 7 normally lasts about a week, but sometimes it suddenly starts draining very quickly. I have Background App Refresh completely turned off, and I wasn't using the phone at all when the ...
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25 views

MacBook Air battery not charging - very strange issues [duplicate]

I have been repairing a water-damaged MacBook Air 2015. Initially the machine would only boot with the battery disconnected and power connected, but then die after around 20 minutes. The MagSafe light ...
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88 views

Macbook Air 11" 2015 model A1465 not charging [duplicate]

I installed a new SSD, formatted it, and Mojave OS was installing when suddenly, the battery stopped charging. All I get now is a picture of a red battery with a low charge. If I remove the adapter, ...
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21 views

MacBook Pro Keys CVBNM don't work after battery replacement [duplicate]

I recently replaced the Battery of my Mac Book using this guide: iFixit Battery Replacement Guide The new battery is working great, but after a short time, the Space Bar suddenly got kinda stuck. (...
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2answers
45 views

brand new iPhone XS seems to run out of juice quite quickly - when should I charge it? [closed]

I've been using a company iPhone for quite some time now, and I found it to be much better than my Android personal phone, so I decided to buy a 256 Gb iPhone XS. I like it much better than my Samsung,...
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385 views

MacBook Pro 2018 ventilation slots blocked

I bought my MacBook Pro in October 2018. Now, on both the left and the right side of the machine's backside (the bottom) both the ventilation slots show some kind of foil coming out. The foil is ...
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1answer
35 views

Can a MacBook Pro 13 (Mid-2010) battery be used in a 2009 unibody polycarbonate MacBook?

I have one somewhere, I just don't have it on me. I'm just curious because my MacBook Pro died but has a new battery, and my 2009 MacBook has a dead battery. I'd rather not buy a new one if I don't ...
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0answers
32 views

Does iPad still use its battery when it is connected and fully charged?

I use my iPad on my desk with a stand everyday and it is connected to usb cable, which also charges iPad. It usually stays at 100% charge since my cable is connected. In this case...does my iPad ...
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33 views

Entering Sleep state due to 'Low Power Sleep': Using AC (Charge:53%) 46 secs [duplicate]

This question is def. not a duplicate of the ones linked. "Your Battery is Dead", I'm afraid, is not the solution. Edit: The event did not happen with AC plugged in, it happened on battery. I then ...