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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16 views

Mobile devices: Does using a protection case decrease the life expectation of the battery?

Some people say that using an iPhone-, iPad-, Watch-case does reduces the life expectation of the battery. I could imagine that it's true, because the heat drain becomes worse. On the other hand is ...
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32 views

Prevent screen from turning off in lock screen

Is it possible to keep the screen on 24/7. I have all the sleep settings set to Never but when I lock the MacBook the screen turns off after a few minutes. I need this because I need to have a remote ...
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Storage Issues & slow booting with MBP 2014

I own a MacBook Pro (Retina, 15-inch, Mid 2014), here are the details Recently I've been facing two issues. 1. Slow Booting It takes around 20+ minutes just to boot. I've looked at my login items and ...
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Is it normal for MacBook M1 battery to lose charge when connected to power?

I have a MacBook M1 that's only about two months old. I keep it connected to power all the time, and use it in clamshell mode so it's rarely powering the display. The battery level drops to about 85% ...
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2answers
50 views

Should I worry that my battery Cycle Count is 1215?

I almost always have my laptop on charge since I work at a desk. I recently notice "service recommended" warning (it might have been there for some time) is there something really wrong and ...
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MacBook Pro (A1990) dead - How to diagnose if battery or mainboard issue?

Hi everyone & thanks for your help in advance! My MacBook Pro (A1990) won‘t start (no reaction at all) after I haven‘t used it for a couple of weeks. Is there any possibility to check via ...
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3answers
2k views

How to resolve my mac dying at 75% battery?

Tl;dr My 2015 Macbook Pro Retina shuts off without any warning when the battery discharges to 75%. According to Coconut Battery Design Capacity: 56.7% Made in 4/13/15 Has lasted 3,268 cycles, and the ...
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12 views

How to pinpoint Amazon S3 keeping phone active 48+ hrs?

On my iPad, I noticed in my Screen Time dashboard that “s3.us-west-2.amazonaws.com” has been active for 48+ continuous hours. During that period, my iPad has most certainly had the screen turned off. ...
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1answer
48 views

Did unibody Macbook Pros have a backup battery (CMOS / PRAM)?

My mid-2009 13" unibody MacBook Pro died years ago. It's probably not worth fixing. I'm just curious if a dead CMOS/PRAM battery could have caused its demise? iFixIt doesn't list any non-primary ...
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10 views

Why does the Activity Monitor Battery graph and Battery system preference show different charging history?

In What are the green columns/lines mean in Activity Monitor - Energy - Battery?, the answer tells that green shading in the Activity Monitor battery graph indicates charging time. However, the ...
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Getting macbook to sleep rather than just dim

Macbook Pro mid-2014 MacOS 11.4 Big Sur MacOS appears to have gotten rid of the energy saver preference and relies only on battery settings now. Rather than explicitly stating how long before the ...
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1answer
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Does MacOS 11.5.2 log mains failures?

If a MacBook Pro (16-inch, 2019) has its charger plugged in and the mains power goes off and back on, is that recorded in any log? Maybe something monitoring that USB port? (Nothing in console has &...
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Does using a lower wattage power adapter for a MacBook increase its battery health?

I have a 16" MBP which comes with a 96W power adapter. With iPhones, I always heard that the faster you charge the battery (i.e., more power you use), the faster the battery degrades. So, instead ...
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2answers
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MacBook Air Battery capacity down to 93%! Should I worry?

I have MacBook Air 2017 (8/128). I've been using it since 2019 on an occasional basis, not as a regular machine. The battery backup is pretty good. But recently I noticed from coconutBattery app that ...
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How to know when battery is "failing" according to Apple?

I have a 2017 MacBook Pro without Touch Bar with 1090 battery cycles, 70% battery capacity and as condition it says "Replace Soon". I bought the computer 2 and a half years ago so my ...
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Got macbook air fixed, and now trackpad isn't working

I recently had my laptop break, it would not turn on. I brought it to the Apple Store and it was sent out and fixed, replacing the battery and the logic board. It worked fine when I got it back, but ...
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Battery Time Remaining not displayed anymore after update to Big Sur on 2014 Macbook Pro

I recently updated my 2014 MacBook (MacBook Pro Retina, 13') from Catalina to Big Sur. The battery info in the bar on the top doesn't display the battery time remaining anymore. Online I only found ...
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1answer
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Macbook Air not charging beyond 10 percent and does not gets on without power

Macbook Air 2015 A1466 . OS is Catalina 10.15.5 I guess i allowed a update. Macbook Air not charging beyond 10 percent and does not gets on without power. And turns off without power. Three months ...
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1answer
42 views

Is it dangerous to leave phone on the charging stand for a long time?

I have a wireless charger in the form of a phone stand. I use it in two cases - directly for charging (of course) and as a stand, so that it is convenient to look at the phone while sitting at the ...
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12 views

Is it possible to see how fast the iPhone battery is being charged?

For example, I have different chargers, and some cables that are 3 feet vs 10 feet long, or a fairly expensive 10 feet cable. Is it possible to see how fast the iPhone battery is being charged (such ...
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MacBook Air (13-inch, Early 2015) won't reboot while updating OS except if battery is disconnected from logic board

Whenever I run an OS update on my Macbook Air (currently OS version Mojave 10.14.6) it will refuse to reboot during the update. It will make repeated attempts at booting, however, which are audible as ...
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8 views

iPhone 12 not turning back on

My iPhone 12 is not turning on even though it says it's charging. The phone died, I plugged it in, the red battery icon is showing so I know it is charging, there's no cable icon showing while it's ...
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1answer
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Do I need to be on the latest version of macOS for Apple Store repair?

My late 2012 retina MacBook Pro needs a new battery installed. If I take it to the Apple Store for repair, will they require me to install the newest supported macOS version before they will replace ...
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41 views

My MacBook Pro 2019 with Touch Bar is draining battery very fast since I updated to macOS Big Sur (11.3)

The laptop runs hot and drains battery super fast. This wasn't the case on macOS Catalina. Do I need to go back to macOS Catalina? Screenshot of Activity Monitor:
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Can I tell my Mac to charge to 80% only? (On M1 Mac)

Lithium Ion Batteries last longest when operating between 80% and 25% charge. I understand MacOS Big Sur has a battery optimization tool built in which is designed to handle this, however I feel that ...
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671 views

Why won’t my Macbook Pro identify it’s own battery?

Update: I’ve decided I’m giving up on what I have to work with, and I’m gonna buy a new battery. I have a 13 inch MacBook Pro that I have been working on refurbishing, and I’ve run into an issue where ...
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1answer
22 views

MacBook showing battery service required no longer turns on after sleep

I got a MacBook Pro 2016 at the office. It was working great however the battery kept saying it needed to be serviced and wasn't really good at holding charge either. 100% would reach ~60% in 30 mins. ...
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94 views

Is it a battery problem or SMC problem?

I have a mid-2015 MacBook Pro running High Sierra. Except when I'm traveling, I always use it in clamshell mode and connected to power. I rarely put it to sleep (I have Energy Saver set to just put ...
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13 views

Battery dying every night, question is about Battery Level in settings jumping from 100 -> 0

I am experiencing issues with my 16" MBP dying every night. I have followed several guidelines on how to resolve, including NVRAM reset, SMC reset, trying to figure out if any processes are ...
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1answer
44 views

Intel MacBook Pro 2020 battery life much shorter than advertised

Ever since I updated to Big Sur, I've noticed my battery life on my intel MacBook Pro 2020 13 inch is quite poor. It lasts about 4 or 5 hours from full to 0 when I'm web browsing (I always use safari)....
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1answer
35 views

View iPhone charging rate

At my office, I have a 3rd-party wall adapter, a 3rd-party microUSB cable, and a 3rd-party wireless charging dock. My iPhone X charges slowly on this setup, compared to at home. I suspect that the ...
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1answer
819 views

My MacBook's battery drains when I don't use it

It has been noticed a few times that (for example) I worked with Xcode and some other apps, and then I left my MacBook with 80 percent of the battery. After a few minutes it automatically goes sleep, ...
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How to raise `LowBatteryNotificationPercentage` and `CriticallyLowBatteryNotificationPercentage` of Bluetooth devices?

I use a Magic Mouse and Magic Keyboard, which go for weeks or months at a time without needing a charge, and then they notify my when they're right on the verge of shutting down. After a lot of ...
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27 views

Can I stop the low battery notification on M1 MacBook whenever it reaches 10%?

I use M1 MacBook Air but this machine keeps notifying me of the low battery status whenever my Mac reaches 10% of the available battery. I don't like to get notified, so would rather block it, but on ...
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1answer
51 views

Get total "Screen On Usage" since last full charge

On my M1 MacBook Air I can check the "Screen On Usage" for the last 10 days: What I would be interested in is how much time I spent actively using the machine since I last charged to 100%. ...
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31 views

Why is my phone not charging, and the lightning cable burning hot?

My phone has been charging on and off. What happens is it charges fine for about 5-10%, then stops charging all together. I think it is a phone issue because i have tried on 2 different sockets with 2 ...
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14 views

Completely random keyboard behavior with duplicate keys and access to LaunchPad

I have the combination of multiple problems that I have seen individually in the net. My keyboard repeats letters randomly. At first I thought it was only the O, but then I've seen many others. These ...
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Macbook Pro 15, 2017: Discharges in Sleep mode

My Macbook Pro 15, 2017 loses full charge (from 100% to 0%) during a 9 hr SLEEP duration. Running this: pmset -g Throws the following result: System-wide power settings: Currently in use: lidwake ...
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25 views

Battery status health reading: good vs fair

I have replaced my original battery in my MacBook Pro (Retina, 15-inch, Mid 2014) with a new one and the health reading was "good", even though the battery started rapidly losing charga ...
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3answers
131 views

Does the dell U3421WE monitor's 90W power delivery (USB-C reverse charging) hurt my MacBook Pro's battery?

I've recently got a big screen "dell U3421WE". It works great as I can finally save a charger and charging cable. It's all because this display can provide you the power. In the official ...
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1answer
220 views

Why is Spotlight draining my new M1 MacBook Air's battery?

I purchased the new M1 MacBook Air 2020 a week ago, and the battery gets drained in about 2-3 hours of browsing the web (I use Firefox). According to my Activity Monitor, Spotlight is consuming 94.02 ...
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Roughly how quickly will a fairly new MacBook Air's battery drain when powered off for several weeks?~0.5% per day? 1%?

I have a relatively new MacBook Air (Retina, 13-inch, 2020) just under 1 year old with only 66 cycles reported on the battery. Question: If I have to1 leave it for several weeks powered-off and ...
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1answer
37 views

Does "service recommended" battery slow down a Macbook while on power adapter?

I have an early 2015 Macbook Pro running Big Sur. It's displaying a "Battery service recommended" notification since recently I checked the system information. Cycle count is 437 and full ...
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17 views

Suggestions on how to deal with a MacBook Pro that cannot be turned on

I bought a MacBook Pro 2016 in 2016. It served me very well for almost 4 years. Last year I suddenly couldn't turn it on. Tried everything on Apple's website but still didn't work. After about two ...
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211 views

Sleep prevented by powerd

Recently, my M1 MBA was draining out of battery very quickly. I lose 50% charge in an hour, losing about 1% in less than a minute. This was surely not the case before. When I click on the battery bar ...
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1answer
90 views

Macbook Pro 2018 - Battery drain since update while shut down

My Macbook Pro is starting to have power management issues. I tried alrady NVRAM / PRAM Reset and SMC Reset to no avail. I regularly shut down my Macbook over the night. Since a few weeks, the battery ...
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1answer
23 views

Unable to see the battery health management in MacBook pro mid-2015

I just got the motherboard of my macbook changed because there was issue with the charge flow. After installing new one, I saw a new option of battery health management which was telling me the health ...
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1answer
25 views

iPhone SE 1st gen charges if plugged in before booting, otherwise does not

I have a first generation iPhone SE. I dropped it into sea water for maybe about 10 seconds yesterday. It appears to work fine when there is power left in the battery. The issue is the charging. If I ...
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39 views

Mcabook Pro aluminum bottom cover bent - from battery overheating?

I have a Macbook Pro Early 2015, model A1502, that I opened up recently because I was worried about a wobble that I saw. I don't use this laptop as much anymore but in the past, I had noticed that it ...
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1answer
63 views

Is there a way to prevent AirPods from discharging when they are not in the case?

I put AirPods in my ears and left on an overnight trip and forgot the case. When I got to the destination, I took the AirPods out and left them unused. The next morning the batteries on them were ...

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