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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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11 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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28 views

Force charging a iPad 4 battery [closed]

I recently found my iPad -- it's a 4th gen and it hasn't been used in a long time. When I plug the cable it just keeps rebooting and not turn on. I tried so much pressing home and power buttons and ...
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2answers
365 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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0answers
17 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 ...
4
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2answers
560 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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30 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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22 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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13 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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18 views

MacBook Air A1466 has battery issues after sleep

I have a MacBook Air A1466 that was having battery issues. I replaced it with a new OEM Apple battery, which seemed to resolve the problem. However, now something new has come up. If I charge the ...
7
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3answers
2k views

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
53 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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58 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
320 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
28 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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0answers
25 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
19 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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1answer
649 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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1answer
19 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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0answers
25 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 ...
1
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1answer
37 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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0answers
19 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
64 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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0answers
19 views

iPhone 5s screen faded to white, then to black, then died

I was using my iPhone 5s 16 GB housed in a rubber and plastic case on a metal shelf running IOS 12 to play some music off the YouTube website (not app). I looked down and noticed that the screen was ...
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0answers
25 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
117 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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0answers
44 views

Diagnosing SMC issue on liquid damaged A1932

Rather unfortunately, I have spilled some coffee over a A1932 Macbook Air. Issues which I am currently experiencing are: the notebook will not work on battery, only with AC power plugged in I ...
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0answers
21 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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0answers
55 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, ...
5
votes
2answers
80 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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0answers
24 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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0answers
36 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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0answers
18 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
32 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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0answers
107 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 ...
2
votes
1answer
27 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 ...
2
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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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0answers
22 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 ...
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1answer
24 views

MacBook Pro not loading although power adapter is connected

I own a new MacBook Pro (bought three weeks ago). Since I don't want to exhaust the 1000 expected full charge cycles this battery is rated at, I connect the MacBook with the power adapter when I'm ...
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1answer
447 views

Care and feeding of the 1st gen Apple Pencil and its battery

Background I own an iPad Pro 10.5" and a first-generation Apple Pencil for it. The Pencil was bought in March 2018. In January 2019, i.e. about 9.5 months later, it had a battery failure and had to ...
3
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0answers
16 views

Suspend a program when on battery power [duplicate]

I’m doing some long-running, CPU-intensive work. This means that I am tethered to a power outlet at all times. What I’d like to do is ask macOS to suspend a particular program when I’m on battery ...
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0answers
13 views

MacBook won't turn on without a charger even if the battery is fully charged [duplicate]

I started noticing that my MacBook Pro Mid 2014 won't turn on without the charger plugged in, I think this is randomly happening. Here is a screenshot from Battery Health app. If the charger is not ...
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0answers
90 views

What is this “Screen Shot” app using so much battery?

The battery on my MacBook Pro drains very quickly compared to what other people report. When I'm running Slack, lots of Chrome tabs, and Docker for Mac and everything, that's to be expected. ...
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1answer
219 views

My Macbook Air Battery Is not Charging and the Icon Shows Charging

My MacBook Air does not charge sometimes. It shows a different battery icon and the battery does not charge. Previously I used to get rid of this by opening battery settings, upon opening the battery ...
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0answers
23 views

What is the best charging strategy for a macbook? [duplicate]

I heard several strategy about macbook power supply connection: keeping alway at least 50% of battery level let unplugged until reaching the 10% warning perform once a month a full discharge What is ...
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0answers
27 views

Weird behavior when charging iPhone on MacBook

When I connect my iPhone to my MacBook to charge it, a sound is played on the iPhone, the green battery symbol appears instead of the clock, the small battery symbol the upper right corner turns green ...
2
votes
1answer
139 views

Does an iPhone battery drain faster in cold?

I have an iPhone SE and I have noticed the battery drainage is quicker when outside and in the winter. I have heard some websites and people say that batteries drain faster in cold. Is this true? I ...
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0answers
24 views

Prevent specific app from unnecessarily activating discrete graphics

Some apps (Chrome-based browsers, TeamViewer) activate the discrete graphics card, even though the integrated graphics has enough power to run the app. This reduces the battery life of my 2018 MacBook ...
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vote
1answer
27 views

MacBook Pro 13'' 2017 (A1708) after year of use showing 50% capacity [duplicate]

I'am really shocked. Coconut battery shows 55.8% from Full Charge Capacity and battery is jumping in charge (like 90% after 5 minutes 50%). And some time ago was "Service Battery" label, but after ...
2
votes
2answers
548 views

New MacBook Pro has a battery cycle count of 2

I bought a new 2017 MacBook Pro without the Touch Bar. I found that it had 2 charge cycles. Is this normal for a new MacBook Pro or it is used?
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0answers
40 views

IOS Battery cycle measurement

An iPad model 1475 battery has failed after 3+ years of vigorous use as a TV screen. It was replaced through Apple for $100. How can I (practically) measure the battery's ability to charge? Is ...