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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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15 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
29 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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1answer
43 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
23 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
23 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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17 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
26 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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27 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
21 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
27 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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21 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
19 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
52 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 ...
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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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16 views

how could I charge Macbook's battery through the MacBook's DC in board without the logic board?

Hello everyone :) I am looking info about how to charge an Apple battery (model a1280) from a MacBook late 2008 (a1278). To feed the battery I want to use the magsafe charger (a1344) through the ...
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0answers
12 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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39 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
54 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
22 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
22 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
71 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
19 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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1answer
21 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
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2answers
116 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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9 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 ...
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0answers
22 views

Is it possible to use Ethernet connection on Mac without battery draining?

I'm using a Macbook Pro 15" 2018 model. I want to use wired Internet connection with it. I've tried using 2 different USB-C hubs to accomplish this, both are USB-C to Ethernet plus some USB-A 3.0 ...
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1answer
29 views

Macbook mid-2010: no power after ssd upgrade

I changed my HDD to a SSD using ifixit guide on my MacBook Unibody Model A1342 (mid-2010). But after reconnecting the battery, the Mac seems to be dead (MagSafe light off, no chime, no fan, nothing)....
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1answer
32 views

Battery draining quickly in iPhone [duplicate]

I have an iPhone SE running iOS 12 and the battery is running out quickly, How can I found out what is draining the battery and how can it be prevented?
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0answers
80 views

Why does MacBook Pro battery discharge when not in use?

I generally keep my 2018 MacBook Pro plugged in and I use it casually when not plugged in throughout the day. With light email checking in Safari throughout the day, I have gone from 35% to 13% today....
3
votes
1answer
33 views

SMC sensors failure while running on battery

I have problem with SMC in MacBook Air 2016. While running on battery, data from SMC module freezes. In iStat Menus temperatures from sensors, RPMs, current meters and voltage meters from CPU aren't ...
2
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0answers
18 views

Is depleting batteries of MacBook Pro 2018 still a thing in 2018? [duplicate]

I was looking for battery related applications in Brew and found Battery Guardian which refers to an Apple page from 2011 as justification why this application matters. Referring an old page as ...
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1answer
23 views

MacBook Pro's battery charging only to 27% [duplicate]

I have a 2017 15" MacBook Pro. A while ago I posted question related to issues with battery here: MacBook 15" (2017) - Battery Charging Problem What's funny is that that problem solved itself ...
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2answers
57 views

13" MacBook Pro 2017 randomly shutting down

I bought a new Mac and have had it it for like 1 week now. I noticed it turns itself off at 8% but I wasn't worried. Then it started shutting down on like 17%-20% cca. When you plug charging cable ...
1
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1answer
104 views

Is it advisable to calibrate the battery on a iPhone?

I want to ask the same question as here: Is it advisable to calibrate the battery on a MacBook? but for iPhone. Should I calibrate iPhone's battery? For example with make it completely empty and full ...
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vote
2answers
60 views

Problems charging older iPad

The iPad was bought 5 years ago, it runs iOS 9.3.5 and claims to be up to date. The battery is fine - it does hold the charge, and it does charge fast (when it decides to charge). The cable is also ...
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2answers
65 views

Where can I find original macbook pro batteries?

I have 2011 13" MacBook pro. I have replaced battery once, replaced charger two times (because it wore off/tore up). I have replaced original drive with SSD and pumped up RAM so my MacBook runs pretty ...
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5answers
3k views

Can I charge a 2017 MacBook Pro with a third-party USB C power adaptor?

I've got a 2017 MacBook Pro which comes stock with an 87W USB C Power Adapter. I want to purchase an additional power adapter, but I don't require an official Apple one. I notice that Anker make one ...
2
votes
2answers
39 views

iPhone turning off on low battery

My iPhone SE on iOS 12 has been acting strange recently. Yesterday, it turned off at around 10% and when I tried to turn it on it said that it has no power. Two minutes later, it turned on and said ...
4
votes
1answer
69 views

MacBook 15" (2017) - Battery Charging Problem

Since yesterday my MacBook charges really slow, so I gave coconutBattery a try, and it showed that my MacBook is only charging with around 14 Watts. I am charging with an Apple 86W Power Supply. So ...
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1answer
36 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
55 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
62 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
52 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
vote
1answer
45 views

"No bootable device…” after unplanned empty battery shutdown

The MacBook Pro has suddenly shutdown (battery went out) while I am doing Boot Camp to Windows besides macOS. Now there's a big black and white message "No bootable device..." I can't do anything, I ...
0
votes
1answer
216 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 ...
4
votes
0answers
127 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
48 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 ...
2
votes
1answer
288 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
19 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
33 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 ...