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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6
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4answers
341 views

Power a MacBook Off-Grid

I'm interested in working remotely- very remotely off-grid in fact. How can I power a Macbook Pro & related peripherals using Solar Power?
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0answers
32 views

iPhone 8 randomly turns off and on, 100% to 0% back to 100% in a minute

I have a iPhone 8, iOS 13.3, and today it's been turning off and on randomly. I've seen posts about this, but none with my exact problem - it seems to be in two modes: Mode 1: doesn't charge at all ...
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0answers
10 views

Battery not charging, green charger LED, 0FCC reported

A client came in with this today: It's a 2017 Macbook Air. The battery status is reported as "Normal" by macOS, and "Good" by coconutBattery. Battery temperature is reported as -17.7°C. The current ...
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2answers
328 views

Battery is draining with “Power source: Power adapter” in macOS Catalina

I've noticed a strange problem with my 2018 MacBook Pro. Sometimes, when I use it with the (original) adapter, it says that the power source is power adapter, but the battery is still draining and not ...
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0answers
40 views

Smart battery case health

I was looking at buying a used smart battery case online and I was wondering if there is any easy way to check the “health” or cycle count of the case similar to how the iPhone shows a “maximum ...
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1answer
34 views

Where is battery data stored on macbooks?

Apps like CoconutBattery can display various data on a MacBook battery like Manufacturing date Design capacity Current capacity Wear level Once you swap a battery the application can instantly ...
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0answers
19 views

FaceTime.app high 12-hour energy impact

In the Energy Monitor on my Macbook Pro 13-inch 2017 base model, it shows high Average Energy Impact (~75) for FaceTime. Since the number is the same (a ~0.5 difference) to to another app I was ...
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0answers
32 views

What's a task-manager lighter than Activity-Monitor? [duplicate]

Apple Activity Monitor is nice and simple enough, but I tend to keep it open all the time in order: to have a CPU monitor always visible in the Dock without any click/gesture (and without wasting ...
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2answers
144 views

watchOS battery drains quickly

I have a GPS-only Series 4 Apple Watch (44mm) running watchOS 6.1.2 (17S796). I bought the Watch new in November 2018. Prior to updating to updating to 6.1.2 (Jan 28, 2020), I had no problems with ...
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4answers
50 views

Which part of iPhone is responsible for radiation

I wonder what part of the iPhone is responsible for the radiation? Is it battery?
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0answers
17 views

Charge a Magsafe MBP with a USBC power supply using an adaptor? [duplicate]

We've got a few newer 15" MBPs (Macbook Pros) in our office, so we have a few USBC MBP chargers in various areas. We also have some older magsafe (not magsafe 2) MBPs which are Late 2012 , 15" MBPs. ...
2
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1answer
54 views

Replacing a MacBook Pro battery

I have a MacBook Pro (Retina, 13-inch, Early 2015) with the following specs: 3.1 GHz Intel Core i7 8 GB 1867 MHz DDR3 Intel Iris Graphics 6100 1536 MB My batteries cycle count is 918 and the ...
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0answers
22 views

MacBook 13" Mid 2012 shuts down with 20% with new battery [duplicate]

I have this problem with my MacBook: when I turn it on, the battery reports 0%. After replacing the battery, I've the same problem. New battery has 4 cycles and 100% of charge capacity. I have ...
1
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1answer
42 views

Why does macOS show 100% battery and fully charged when “Charge Remaining” is lower than “Full Charge Capacity”

My Battery percentage shows 100% Mark. But I got this from the System Information section. Why does it say fully charged and shows 100% mark when the actual remaining charge is 95%?
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0answers
37 views

MacBook Pro 13" 8,1 shuts down during boot, recovery boot and internet recovery

Laptop: MacBook Pro 8,1 (Late 2011) List of related (I think) issues: shuts down during boot: Apple Logo, progress bar ~10% shuts down during recovery boot (Cmd + R): Apple Logo, progress bar ~10% ...
1
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1answer
106 views

Battery Not Charging and Light Not Showing Up Again [duplicate]

I just have got a Macbook Pro Retina 2014. The charger is new and 85 Watt. I have two issues. When I first connected the charger, there was 54% charge on the laptop and for only 1 second the green ...
1
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1answer
51 views

MacBook Pro shows not charging when plugged in

I've got a MacBook Pro (Retina, 15-inch, Mid 2015) and as of today it says "not charging" even when it's plugged in. The MagSafe connector has an orange light, and the power menu's screenshot is ...
0
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1answer
613 views

Safari using significant energy

I am currently using a 2017 Mac Pro touch bar that is still on Mojave 10.14.6. My safari is consistently shown using significant energy on my menu. In my activity monitor, I noticed there are many ...
3
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0answers
26 views

MBP 2012 No Battery Available, Your Computer is not connected to a power source

I have a MBP2012 with a failing battery. Battery shows about 3V across my multimeter on the but the port is still 12v at the correct pin points. So the battery is dead - that's fine, I can replace it. ...
1
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3answers
440 views

CPU throttling on Macbook with bad battery and Catalina

I've seen some answers for this but it references older systems and older OSes. Can anyone update this for relevance in the Catalina era. I have a Macbook10,1 with a shot battery. The screen is ...
1
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4answers
472 views

MacBook Pro 16" runs about 10 degrees hotter when plugged in on idle, is this normal?

The degrees delta has a noticable impact on fan noise and is making me consider returning the machine. Is it normal for MacBook to be running so much hotter when plugged in? Idles at 60 degrees on a ...
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0answers
30 views

Reliable ways to know the battery capacity of my iPhone 6s?

I want to know the battery capacity of my iPhone 6s. What reliable ways are there ? Apps I have tried gave me — the same evening — different results : 1690 mAh, 1492 mAh, 1400 mAh.
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0answers
33 views

Iphone 5 keeps shutting down when I have 40% battery left. Question about reset and restore

I have an iPhone 5 (old I know, but I'm rather fond of the compact screen. It's a secondary phone) that was working perfectly until I updated ios. Since the last update available was installed, it ...
1
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1answer
85 views

Battery drains too fast when device is Shut Down

When I bought my brand new Macbook, it was like 9-months old (according to battery production date) and still had almost 40% charge on first turn on. But after that, every time I charge my Macbook (...
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3answers
5k views

Gmail Doesn't Respect Dark Mode System Preference on iOS 13

Given Dark Mode can really enhance battery life, I'm keen to implement it. Although all my other IOS/IPADOS 13.3 Apps seem to respect the "System Preferences" > "Display & Brightness" > "...
1
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1answer
128 views

Can I run MacBook Pro Retina 13 inch early 2015 without a battery?

I have a swollen battery, and want to remove it while waiting for the replacement. Can I remove it and safely turn on the Mac only with the power chord?
2
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0answers
351 views

syspolicyd is killing my battery on a new MacBook Pro, repeatedly scanning and re-scanning my Steam library

syspolicyd is consistently using ~20% CPU and consuming lots of power. Tracing it with sudo fs_usage "$(pgrep syspolicyd)" reveals that it's repeatedly scanning the same dozen or so Steam apps in my ~...
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0answers
16 views

iPad pro 12.9 is charging but not turning on

My iPad pro 12.9 2‭019 was completely drained and when I plugged it in the Type C charger it showed that it is charging but it׳s been overnight and still hasn't powered back on
1
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1answer
124 views

Mac OS Catalina, uneven battery drain in AirPods

I have noticed something about my AirPods, and I want you to help me understand if this problem is due to AirPods or Mac OS. Initially, my AirPods were charged to 100%. But After a few hours of usage,...
0
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1answer
385 views

iPad battery calibration?

I bought an old iPad 4 mini which was somewhere in desk with empty battery for last who-know-how-many years. The result is battery in a bad shape obviously, iPad works great but shuts down when ...
3
votes
1answer
458 views

MacBook battery drains SIGNIFICANTLY after shut down

experts! I really hope to solve this problem as it has been drilling me for weeks now. I have a MacBook Pro 13" (2018 with Touch Bar), the A1989 model. When I shut down my Mac, the Mac shut down ...
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0answers
44 views

Early 2015 Macbook Air (A1466) Not Charging

I have searched far and wide to try and solve this issue but have had 0 luck. I have an early 2015 MacBook Air (A1466) that I've kept in great condition over the years. It's never really left my ...
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1answer
52 views

MacBook Pro 2009 doesn't boot without charger

I have bought a used MacBook Pro 2009 from eBay. I have charged the battery to 100% (worked fine), and booted it. Everything worked, except that I can't boot when on battery. The battery itself is ...
0
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1answer
27 views

How to choose mac battery?

I had a problem with my battery(as I think). Actually I asked the question before about this issue here MacBook turning off suddenly And eventually, I have decided to change my battery. I opened my ...
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0answers
26 views

Are third party chargers for iPhone bad despite having government agencies' certification stamps? [duplicate]

My usage history with Apple: iPhone 3 (2011~2013) and iPhone 8 (2018~present) I sometimes used chargers purchased from convenience stores. Although all the chargers I got had government certification ...
0
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2answers
64 views

MacBook Air 10.15.2 Shuts Down on Startup, falsely indicating 0% battery [duplicate]

I have a MacBook Air, with Catalina 10.15.2. When I start it up unplugged, with a full battery, most of the time it starts up and then immediately shuts down. When I hit the power button again, it ...
1
vote
1answer
52 views

My MacBook Air suddenly shut down today, is there an easy way to find the associated log entry?

My old 2012 MacBook air suddenly shut down. I had the battery recently replaced by a non-Apple shop since Apple has already obsoleted this model. The battery was somewhere between 60% and 80% when ...
1
vote
1answer
19 views

Accidentially broke a header - but do I really need to worry?

I was upgrading the memory, SSD and optical drive (modded a blu-ray drive with the original upper shell from the SuperDrive) in a MacBook 2010 White Polycarbonate a1342 when I realized that one of the ...
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0answers
18 views

battery is not charging after liquid contact [duplicate]

After spilling a tea into the macbook 11 i have disassembled it. Cleaned everyhing with IPA and brush. Put together. Macbook is working but charger does not charge. LED does not light. System says it ...
1
vote
1answer
95 views

What size is this internal screw for the Macbook Air (A1466)?

I just replaced the battery for my Macbook Air (A1466), but in the process I lost one of the screws (image attached). I initially ordered a standard replacement set from Amazon, but realized it may ...
-2
votes
1answer
629 views

Can I completely turn off the fans on a MacBook Pro (0 RPM)

I would like to know if there is a utility to completely turn off the fans. Currently, when completely idle, fans are showing 2000 and 2100 RPM. Although this is probably not recommended, I would ...
1
vote
1answer
49 views

What can I do to regulate iPhone charging rate (make it charge slower)?

My iPhone is charging from my MacBook. I believe that it charges too fast and even heats quite sensibly. Also, I'm afraid the battery could degrade at a greater rate with such a fast charge. So, I ...
1
vote
1answer
80 views

What is killing my battery?

I have an iPhone XS (bought brand-new, About section says limited warranty until 14 april 2020, the date I bought it) running iOS 13.2.3 When I took it out of the box it was running iOS 12 and I ...
3
votes
1answer
88 views

Is my battery in my iPhone faulty, or something more?

I have an iPhone 7. I had the battery replaced approx 6 months ago. I've noticed the battery life hasn't been overly great considering it's a new battery. Yesterday, my phone started turning off at ...
0
votes
1answer
29 views

Installing more than one battery pack in Macbook?

I am interested in installing two standards aftermarket batteries (wired in parallel) in Macbook 11 inch 2017. Please ignore the issues with the physical housing constraints - I am purely interested ...
3
votes
4answers
769 views

Can I check iPhone, iPad, Watch battery on Mac?

My goal is to have battery status of other Apple device on my Mac (preferably on menubar). I'd like to have a glimpse of the battery status of my iPhone, iPad, Watch, and Airpods. I'm a user of ...
1
vote
0answers
596 views

Macbook Pro Keyboard and Trackpad not working after battery change

I've changed my battery after this question: Does battery condition have anything to do with macbook pro performance? The performance has significantly increased, however I have a new problem. My ...
3
votes
0answers
34 views

Export battery usage report

Is it there any tool that I can use in order to export the battery usage from my iPhone SE? The device is running iOS 13.2.2. Thanks in advance.
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0answers
34 views

Is the iOS 13 'Optimized Battery Charging' feature on the iPhone optimised for smart battery cases?

I have the iPhone XR Smart Battery Case, I charge my phone every night and therefore my phone very rarely ever goes below 100% charge as it uses the charge in the battery case first. As I understand ...
0
votes
0answers
527 views

macOS Catalina drained my Macbook Pro's battery while in sleep mode

Yesterday I updated to macOS Catalina on my Macbook Pro 13" (i7, 16GB) and something strange has happened. Normally, the way I use the computer is to be attached to a double monitor setup, with the ...

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