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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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1answer
29 views

What is the most accurate method of testing batteries for A1278 MacBook Pro?

I have about 20 batteries I want to test. I'm trying to find out if they will read "replace" or "service" in the OS. Usually, I'll stick the battery in long enough to collect a cycle count and ...
3
votes
2answers
38 views

Is it time for a new battery?

I have an iPhone SE, for just over a year. My battery health which I find in settings is decreasing quite rapidly. Right now it is at 94%: Recently it has been going down around 1% a month. After ...
2
votes
2answers
22 views

Macbook battery [duplicate]

I have a macbook pro 2010 15 inch A1286. My problem is that the power adapter is plugged into the MacBook but it indicates that the battery is not charging and "Power Source: Power Adapter". The ...
3
votes
1answer
46 views

My MacBook isn't charged since 2016, can I still charge now?

I have a MacBook that requires a MagSafe charger, but my charger broke in mid 2016. My MacBook was holding 40%+ charge and no longer being charged. I am wondering if I can still charge it today? If ...
1
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1answer
15 views

"No bootable device…” after unplanned empty battery shutdown

The macbook pro has suddenly shutdown (battery went out) while I am doing bootcamp to windows besides macOS. Now there's a big black and white message No bootable device... I can't do anything, I ...
1
vote
1answer
20 views

Battery Not Charging, remains at 0% [duplicate]

I have an Early 2015 MacBook Pro Retina, which I hard-restarted earlier (holding the power button) due to a software crash. It turned off just fine but refused to turn back on again (no backlight, no ...
3
votes
0answers
46 views

MacBook Air 2018 vs. MacBook Pro: What is the battery life at equal brightness in nits?

The MacBook Air 2018 is advertised as 12 hours battery life, the MacBook Pro as 10 hours. This official Apple testing is done using 3/4 brightness setting. Since the maximum brightness of both models ...
2
votes
0answers
23 views

Macbook not charging after depleting battery

OK, this is a bit of a weird one. My wife, thinking someone damaged her Macbook's cable, unplugged it. She then ran the Macbook until it shut down by itself. When I got home, I tested the cable and ...
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0answers
10 views

Battery problem [duplicate]

My 2011 macbook pro doesn't work without the magsafe connection and the LED color is green and as soon as I plug it off it shutes down I tried SMC reset but it doesn't work,nothing happens and it ...
0
votes
0answers
11 views

Mid-2012 MacBook Pro Running Slow [duplicate]

Specs: Mid-2012 MacBook Pro MacOS High Sierra 10.13.6 2.9 GHz Intel Core i7 8 GB 1600 MHz DDR3 Intel HD Graphics 4000 1536 MB I believe around the time the battery first died (maybe not exactly at ...
2
votes
1answer
31 views

iPhone 7 won't charge consistently from MacBookAir 2015

I've had my MacBook 11' 2015 Air since July 2016 and my iPhone 7 since April 2017, and my phone never had any issues charging on my Mac. I'm not sure when it started, but at some point both USB ports ...
3
votes
0answers
18 views

Is quitting apps bad for my iPhone battery? [duplicate]

Last night at dinner one of my Android using friends was bragging about how their Samsung phone had an option to tap one button to quickly shut down all your apps. My other friend (an iPhone user like ...
2
votes
1answer
23 views

MacBook Pro keyboard replacement: Refurbished or new components? [duplicate]

I'm about to send my 2016 MacBook Pro for a top case replacement due to a failing keyboard. Since the battery will also be replaced as a part of the top case, I'm wondering if Apple installs a ...
4
votes
3answers
308 views

What are dos and don'ts when charging an iPhone / Apple device? Can I charge the phone all day long?

I usually charge my phone all day and night long. All day long, because at work I connect my phone with my laptop, and all night long because when I go sleep, the phone will be charged overnight too. ...
1
vote
0answers
56 views

MBpro - Battery drain in sleep mode - Wake Reason : EC.USBC(Maintenance)

So I have a MacbookPro 2018 from septembre and a week ago, I noticed that my battery computer drain really fast in sleep mode. So I tried a lot of things like setting hibernatemode in 25 and other ...
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votes
0answers
26 views

iPad not starting up [duplicate]

I have iPad Air Wifi and its not starting, even after I charged it fully. I tried Hard Reset, connected to PC With DFU, but no display on the screen and the restore fails. Yesterday, I tried to ...
1
vote
0answers
15 views

Macbook Pro SMC reset

I have a macbook pro 15" late 2013, I removed my dead battery and I am waiting for a new one from ifixt. Do I need to reset the SMC before installing the newer battery or should I wait till I fully ...
2
votes
1answer
42 views

[solved]Macbook pro MGXA2 draining battery on SHUTDOWN

I have a macbook pro 15" late 2014, I've got a problem: battery draining when shutdown (not sleep). 2018-11-17 12:47:31 +0700 Wake DarkWake to FullWake from Normal Sleep [CDNVA] due to UserActivity ...
1
vote
0answers
18 views

the battery of my MacBook Air is not charging and the icon not showing in menu

the battery of my MacBook Air is not charging and the icon also does not show on menu bar. when I click on the box in System preference, power back up the icon come to the menu bar for a second and ...
2
votes
1answer
27 views

Macbook Pro Early 2015 13 inch Retina Cycle count reset

Apparently, the max cycle count for my MacBook (type is on the title) is 1000. Currently, my cycle count is 990 and I'm wondering if I can reset it without changing my battery? Probably impossible but ...
0
votes
1answer
24 views

Macbook pro “13” mid 2010 battery not holding charge. [duplicate]

Macbook pro “13” mid 2010 shutdown after removing the megasafe charger. . . Any help will be appriciated.
2
votes
1answer
104 views

Why is my MacBook Pro showing the low battery screen while at 100%?

Yesterday my MacBook shut down, a few seconds after I turned it on, and showed this screen when I wanted to turn it on again: When I plugged in my Mac, the battery level was at 100%! The same ...
2
votes
0answers
47 views

Login screen shows wrong battery percentage

My 2018 Macbook Pro 13 login screen shows 96% and shows no charging indicator even though the power is connected. When I log in it shows 100% and the charging/power indicator. I am running Mojave 10....
1
vote
1answer
45 views

Macbook Pro Mid-2014 trackpad not working

My mid 2014 13" macbook pro (retina) has been acting really weird. Two days ago, after I powered it up, the mouse started going crazy, moving all over the place, and eventually stopped moving, and ...
2
votes
1answer
65 views

Keep WiFi alive when on battery and lid closed?

We're using a VPN to access certain parts of internal infrastructure from the office; the VPN uses 2FA, so saving credentials and bringing it up with the network when the machine wakes up is not an ...
-1
votes
0answers
73 views

Is there a good way to troubleshoot Mac battery drain issue during sleep?

The most recent instance of the problem was, last night at 11pm my Macbook Pro was charged to full, I disconnected the charger, closed the lid and put it there. This morning I turned it on and found ...
2
votes
2answers
147 views

SMC reset to fix battery not working, but cant be sure SMC reset has taken place

I have had a new battery in my mid 2012 15" macbook pro running 10.11.6 The battery health as monitored through a battery health app downloaded from the mac app store has been deteriorating ever ...
7
votes
2answers
545 views

What is the life expectancy of a Magic Mouse 2 battery?

I would like to know what is the battery life cycle of a Magic Mouse 2. Or the approximate number of charge/recharge cycles before its battery's performances will start to reduce visibly?
2
votes
1answer
34 views

External monitor connected via usb-c causes mac to not show low battery notification

I have a macbook pro 15 inch (2017) that I connect to a 32" external monitor via usb-c. Usb-c is also 'partially' charging the mac but not enough to fully charge battery since voltage from monitor to ...
0
votes
0answers
50 views

MacBook Pro 13" Early 2015 - Won't display anything after the Mojave update

My MacBook Pro 13" Early 2015 won't display anything after the 10.14 (Mojave) update. Here are the symptoms of the macbook: It turns on, there is a chime after clicking the Power button The screen ...
2
votes
0answers
90 views

Installing SSD in Late 2013 15" MacBook Pro (A1398) [closed]

I have a Late 2013 15" MacBook Pro (A1398). I was wondering if I can install the Samsung Evo 970 SSD on my logic board + Sintech adapter without having any deep sleep, hibernation and battery drain ...
1
vote
1answer
49 views

Macbook pro 13" mid-2012 not turning on, no battery leds (battery ok)

My MacBook pro 13" 2012 won't boot up. The battery leds on the outside aren't indicating anything either and the charger won't show bright green or amber led. Is my logic board the cause? Things I'...
2
votes
0answers
8 views

My phone toggles between on and off charge only when plugged into my MacBook Air

Both my MacBook Air and the lightning cable are brand new. I've tried to clean the inside of the charging port of my iPhone 6s.
2
votes
1answer
41 views

Battery draining fast and Haptic feedback not working

I have a 13" MacBook Pro Retina early 2015. A few days ago I was working on a spreadsheet and then it suddenly crashed (black screen for several minutes). Once it finally started up again, the Haptic ...
0
votes
2answers
68 views

Macbook Air: shutdown on 50% battery

Target machine: MacBook Air, 13-inch, early 2014, MacOS Sierra 10.12.6, used for 4 years very carefully without any problems. Battery has only 70 cycles, condition reported as "Normal", and still ...
0
votes
1answer
41 views

iPhone SE touch recognition and battery problem

Recently, I purchased an iPhone SE, 32GB, on 13/10/2018. The manufacturing month written on the box was Aug/2018. The phone came with pre-installed iOS 11.4.1 and on the same day I updated it to iOS ...
1
vote
0answers
69 views

Battery capacity drastically reduced after Update to macOS Mojave (10.14)

I check my battery with coconutBattery frequently and was shocked when I found out that the maximum capacity went from 95% (Date: 18.09.2018) to 90% (Date: 24.10.2018) within a month. Is this a normal ...
4
votes
2answers
67 views

12" MacBook battery is dead after 386 cycles

I have an early 2015 12" MacBook 512 GB SSD with 8 GB RAM. I have used my it nearly daily since I bought it brand new. I have never exposed it to high temperature, always working in AC room with a ...
0
votes
0answers
12 views

Why I phones do shut down when they are at high percentage of battery? [duplicate]

I’m asking this because, in the school, before Math class came, I have my battery of the I phone 6 only 70% battery, and then it shut off suddenly. And then, when I open it, it turns to be 10% of ...
0
votes
1answer
68 views

MacBook Air 13 (mid 2012) shuts down at 50% battery without warning, SMC chip broken? [duplicate]

Some weeks ago I bought a second hand MacBook Air. The MacBook Air runs fine but always shuts down without any warning at around 40-50% in battery mode. After restarting battery is at 0%. First I ...
0
votes
1answer
26 views

macbook shuts down immediately after startup

My retina MacBook Pro, running 10.12.6, has an annoying habit. If I close the lid on 50% battery, the next time I open it, it wakes, I log in, and then a few seconds later the screen goes black and ...
3
votes
0answers
25 views

Macbook Air doesn't turn on [duplicate]

I have a 2017 Macbook Air 2017. A week ago I turned it on and wrote my password, then it shut down. I tried to turn on but nothing happened. I read some posts on the Internet and tried the following: ...
0
votes
1answer
67 views

How do I diagnose battery drain whilst asleep?

Today I've had my 2017 MacBook Pro asleep in my bag all day. I left home with it at 100% battery and ended up not using it for the entire day, I didn't even open the lid. When I got home, I opened ...
0
votes
2answers
90 views

Erratic iOS battery meter and usage from Music app randomly playing on mute

Since 3 weeks ago the battery meter on my iPhone 6s with iOS 11.4 has been highly inaccurate. The meter will stick at a certain percentage far longer than it should, then rapidly drop down to a lower ...
0
votes
1answer
21 views

iPhone 6: battery replacement and display problem

I'm planning to have a battery replacement procedure for my old iPhone 6. However, at the same time, I'm also experiencing another problem with it: the bottom of the display seems like not to be fully ...
0
votes
1answer
63 views

New battery installation in the Macbook Pro

I get a new battery from a repair shop yesterday for the MacBook Pro and the configuration is provided below, I read that the battery life for the new installation should be about 7+ hours while I ...
6
votes
2answers
628 views

Storability / shelf life of a newly bought iPad in unopened original packaging

Apple may release a new series of iPad soon in future. It may affect the prices for lower-tier devices or they may get discontinued. I am planning to give an iPad 9.7 (2018) as a Christmas present. ...
2
votes
1answer
19 views

Using USB ports for charging when MacBook Pro is not connected to power source and with lid closed

I remember than on older MacBooks, it was possible to charge any USB device with the lid closed and without connecting to a power outlet. However, at some point this has been disabled. I am currently ...
2
votes
1answer
60 views

MacBook Pro not booting

I have a mid 2010 MacBook Pro that won't boot up. Faced this problem quite a while ago, so i sent it in for repair and was told the logic board may need replacement. The store told me they tested my ...
2
votes
1answer
449 views

Is it worth upgrading to iOS 12 on an iPhone 5s

According to the WWDC 2018 Apple Keynote, iOS 12 will bring speed improvements with respect to its predecessors. However, I was wondering whether it is worthy to upgrade an iPhone 5s to iOS 12? In ...