Concerning devices that store electrical power which can be used to run various devices in the absence of external power.

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5
votes
2answers
1k views

iPhone 5 Battery - Help me diagnose issue

I'm having a weird issue with my iPhone 5, that I think is related to the battery, but might be something else. Symptoms The battery indicator is wrong. It sticks to the value it fetches when ...
4
votes
1answer
2k views

iPhone: What is `accountsd` and why is it using 80% CPU?

I just got a new iPhone 6 for my SO and noticed that it is quite toasty to handle with the battery draining quite fast. It has been 24 hours since I first set it up. I plugged it into Instruments ...
0
votes
1answer
15 views

iPad won't turn on after being drained [duplicate]

What if my iPad didn't turn on after battery drain? I did all the steps but it still didn't work. Is it already damaged or can I recover it on an Apple Store?
1
vote
3answers
2k views

Battery is not charging despite SMC reset

I have a problem with charging of my Battery which has been appeared last night. It was working perfectly well for a long time. All of my friends who had different laptops were so jealous at my ...
0
votes
1answer
6 views

iPad 4 Charges Very Slowly

After I updated to iOS 8.4, My iPad has been charging Very slowly. Times: 12:00PM (noon) - iPad died, switched on charger. (1%) 1:30PM - iPad comes on. (2%) 3:00PM - 4% 4.00PM - 9% 5:10PM - 9% ...
0
votes
1answer
76 views

My Ipod 5th Gen won't turn on

I have an Ipod touch 5th gen and i use a cheap £1 charger to charge it up, but recently my Ipod ran out of battery so i plugged it in using the charger and my Ipod was completely unresponsive, i tried ...
0
votes
0answers
9 views

Xserver Early 2009 Raid Card

I have an Xserve 2009 with Yosemite installed. The 3 hdd are configured as RAID5. It was working fine until this morning. Upon reboot I see the folder with the question mark. I put a macbook pro in ...
8
votes
5answers
29k views

What is the relevance of “Low Signal” in battery usage stats?

iOS 8 shows "Low Signal" in the battery usage stats, like here: How great is the effect of signal quality on battery life? In other words, if the signal quality was better, would the stats be more ...
0
votes
0answers
21 views

Should a MacBook Pro be used without a charger until 1% until charging instead of keeping it always on charger? [duplicate]

There are two charging styles: use until 1% -> charge -> use until 1% -> charge... always charge Which one is better?
1
vote
1answer
39 views

Is there a way to tell how long your Mac was turned on on a distinctive day?

I would like to know how long my MacBook Pro was on today - total uptime for the day. I just bought it, and I thought the battery was bad but it went on for longer than I thought. Of course, I wasn't ...
1
vote
4answers
19k views

Checking the health of my iPhone's battery

It seems that my iPhone's (4s - purchased Nov. 2011) battery loses its charge fast. I have read all the relevant OPs. Is there any app which provides information about the battery's health? Or ...
2
votes
3answers
9k views

My MacBook Pro is not sleeping when I close the lid on battery

I purchased my macbook back in 2011, and this problem just started. When I unplug and close my computer to put it in my backpack for school, it does not sleep. I take it out and its very hot and has ...
1
vote
1answer
2k views

Why is my iPhone 5S battery draining overnight and very quickly?

A few days ago I was charging my phone in my car and it stopped charging, and I noticed that the cord had a little hole and smoke was coming out of there. I was buying some food from a local shop, and ...
2
votes
5answers
15k views

Is my iPhone 5S draining battery too fast (and is it due to process mediaServerD?)

My iPhone 5s has always had less good battery life than my previous iPhone (4S), but I'd always assumed that it was due to the increased speed of the CPU/GPU and the increased screen size. It also ...
4
votes
4answers
23k views

Why is my iPhone 5S overheating so much?

Activities such as: Phone Calls that last around 10 minutes 3G Browsing for 5 - 7 minutes Watching videos for 5 minutes Using apps such as facebook / instagram etc for 5 - 7 minutes, lead to my ...
0
votes
1answer
23 views

How to disable alert notifications in iOS when battery drops to 20% and then to 10%?

Is there a way to disable these alerts that appear when battery drops down to 20% and later on to 10%? (iPhone 4s iOS 8.4.1).
0
votes
1answer
14 views

Low Battery Performance - Activity Monitor Shows Faults in CPU statistics

My Macbook battery (I guess batteries is the more correct term in this new Macbook) isn't getting battery life as estimated by specs, and it is already lessened in only about 2 months. Today, I ran a ...
1
vote
1answer
33 views

iPhone is dead, will not charge

I have an iPhone 4s running on iOS 8.1.3. I've owned it for about 2-3 years now and have taken good care of it physically and hardware wise. But recently my phone had died. I plugged it in to the ...
1
vote
1answer
42 views

Does iPhone battery life last longer using Wi-Fi vs Cellular Network?

Just out of curiosity and for my knowledge, from a software and hardware standpoint prospective, I read: When you use your device (iPhone) to access data, a Wi-Fi connection uses less power than a ...
0
votes
0answers
548 views

iPod Nano doesn't get fully charged when connected to MBA

I've a 7th generation iPod Nano. And it's working fine. I usually used to charge it either by connecting it to a wall charger or through my iMac. And every time it got charged just fine. The battery ...
0
votes
1answer
1k views

Should you unplug the cable once your MBP is fully charged? [duplicate]

With Mavericks is this still needed? Doesn't this eventually cause the battery to die faster because it means it'll have to go through more cycles frequently?
1
vote
1answer
11 views

What should I know about replacing my computer's battery?

My early 2011 13" MBP has been telling me to "Replace Soon" the battery, and today it's finally getting its wish. I know the hardware procedure, courtesy of iFixit, but is there anything else I should ...
3
votes
1answer
60 views

I accidental went swimming with my iPod Touch 5th Generation

Today, I went to a river and forgot that my iPod was in my pocket. I was in there for about half an hour, and only noticed it once I was changing into my other clothes. Is there anything I can do to ...
-3
votes
0answers
19 views

about battery terminal on board and charging

i have 2 iphone 4s. one is locked by iCloud and second is disasembled on logic board i was destroy power connector/terminal for battery. all details on the photo there is removed diods So the pings ...
0
votes
0answers
31 views

MacBook Air Won't turn on

I've had this MacBook for only about a week and I'm having issues with the fan speed, battery percentage, keyboard back-light and now it won't switch on. I was was having issues with the trackpad and ...
1
vote
0answers
37 views

iPhone 5 won't charge in certain geographic location

My iPhone 5 charges fine in NYC - albeit with weakening battery life. I went to Maine a couple weeks ago and it would not charge. Used the same charging hardware as in NYC which also worked fine ...
0
votes
1answer
32 views

How often should I use the battery on my MacBook (which I exclusively use as desktop)? [duplicate]

Since getting my mb-pro 3 years ago, I've only used it as a desktop. A few times, the battery has kicked-in for a few hours while the power was out. Someday, I might want to task it as a laptop. For ...
2
votes
2answers
116 views

How to disable SpeedStep/XCPM on Macbook Pro 11,1 OSX 10.10.2?

Does anybody know how to disable OSX from throttling/underclocking the CPU on a Macbook when the battery gets low on power? I think the feature is called SpeedStep. The problem is that my battery is ...
0
votes
0answers
7 views

iPhone 4S Battery Over-Charge Shut Off

Could anyone please tell me where the iPhone 4S initiates the shut-off with any 'over-charge' to the battery? (i.e. keeping phone in charger all night). In other words, is this a mechanism within ...
1
vote
1answer
49 views

Will it damage the battery if I use my MacBook Pro while playing WOW or just using it, while charging?

I just received my first MacBook Pro as a birthday gift, and I am one of those people that tends to "baby" their electronics. I also tend to play World of Warcraft (WOW) quite a bit, but the problem ...
0
votes
0answers
35 views

MacBook Air trackpad erratic, no bulging battery

I have a MacBook Air 13-inch, Mid 2011 10.10.3 (out of warranty) bought in 2012 and I have been struggling with trackpad issues since January 2015 soon after receiving the warning "Battery Service" ...
0
votes
0answers
11 views

Magic Mouse low battery when not in touch with Mac

Anybody else notice that their Magic Mouse goes dead a lot quicker ... like... within 15 days or so if you use a MacBook and are always leaving your mouse behind? I use great batteries, won't mention ...
4
votes
1answer
27k views

iPad won't turn on after a complete battery drain

my iPad iPad mini retina is out of warranty I forgot to plug in my iPad after the critical battery warning and it went some minutes following the warning. I was not worried because same thing had ...
4
votes
6answers
7k views

Is it safe to turn the iPhone 4 off for over a week

I am going away on holiday for a week but don't want to take my phone with me because I'm afraid of running up a huge bill, is it safe to turn the phone off for this long? Or can it damage the ...
0
votes
1answer
19 views

My iphone 4s turns on while charging, but once on it turns off

Recently my phone died and I plugged it in, and like usual it turned itself on. But I noticed that once the phone was turned on it wasn't charging. I tried a new charger, but all the chargers I have ...
2
votes
3answers
6k views

Is there an iOS app that measures/reports the battery charging current?

I suspect my fake lightening cable charge my iPhone 5 much slower than my original lightening cable on the same charger. Is there an app that will display the current battery draw/charging current and ...
0
votes
1answer
38 views

Macbook Pro 2012 shutsdown suddenly at 25% battery

I have a Macbook Pro Unibody Mid 2012 and used the battery for only 118 cycles. Since a few weeks ago whenever I'm on battery and it reaches <25% my Macbook shuts down immediately (no warning, no ...
0
votes
0answers
27 views

How can I determine the battery impact of using scaled resolutions on my MB Pro Retina?

(My machine is a stock mid-2014 MB Pro Retina 13") I noticed a definitive drop in how long my battery lasts when I switched to the largest resolution available (to have more space to work with) ...
3
votes
2answers
75 views

Bulge in MacBook Pro near Hard drive

I have noticed in that past 24 hours that two rigid and straight "lines" have developed as bulges on my Mid 2010 MacBook Pro 15 inch. They are noticeable when looking at it in the light and you can ...
21
votes
7answers
31k views

How do I debug an out-of-control “kernel_task” process?

Just recently I noticed my battery life having a pretty significant drop and the "kernel_task" process using quite a bit of CPU (a constant 1-6% on my 2.8ghz dual-core i7, 2010 MBP). Obviously I think ...
0
votes
0answers
20 views

Dropbox drains battery, what can I do?

I have a 13" retina macbook pro, and I recently noticed, that dropbox started using up a lot of my battery, with an average use of about 16 (units in the activity monitor). It has probably been a ...
0
votes
1answer
31 views

MBP 15" early 2011 shuts down after login without power cord

Update #1: I uninstalled gfxcardstatus. Now the only times it shuts down instantly are when I initially log in (tried on user with Filevault and one without), and when I log out from one user ...
0
votes
0answers
135 views

iPhone 5S 8.4 JB fast battery drain. Tried everything

So, I tried to fix battery drain on 8.3 and deleted a lot of tweaks. I saw that locationd stay in memory more than 5 hours ("top -o time"), etc. Then I restore to 8.4 and installed only "must-have" ...
0
votes
1answer
12 views

How to maximise the life of the Apple battery charger set (for Magic Mouse) batteries?

I purchased a magic mouse battery charger set today. It had a battery charger and 6 batteries. Now I put 2 batteries into the magic mouse and 4 batteries are in the box. My question is how to maximise ...
0
votes
0answers
18 views

As a new Swift/Xcode user, I want to setup a Playground to fetch the battery status of my macbook

As a new Swift/Xcode user, I want to setup a Playground to fetch the battery status of my macbook. I have already tried the following: import Cocoa import IOKit import Foundation var blob = ...
0
votes
1answer
10 views

Best practices for storing a replacement battery?

My early 2011 MBP has been giving me the "Replace Soon" battery warning, and an app I have says that the battery can hold 57% of its original capacity. I bought a new one on Amazon, but now I've ...
0
votes
1answer
23 views

What are your tips for finding a replacement battery for mac book pro? [closed]

The battery on my mac book pro (late 2008) running OS X Yosemite needs to be replaced. The battery only holds half capacity. What are your tips for finding a good battery. What battery do you ...
0
votes
0answers
20 views

Are location-sensitive reminders bad for battery life and/or data usage?

If I understand iOS's location-aware reminders correctly, they work by constantly checking your location until they see that you're in the specified range. Wouldn't this be really detrimental to the ...
0
votes
1answer
51 views

What is this infrared light on my iPhone 4 and how do I turn it off?

This is a picture of my iPhone 4 that I just took with an infrared-capable camera. As you can see, there is a light on top, around the middle. You can only see it with with an infrared-enabled camera, ...
3
votes
2answers
31 views

Don't charge iphone when plugged into macbook?

Is it possible to temporarily keep your iPhone from draining the macbook battery? When I'm out and about I sometimes want to connect my [nearly empty] macbook to my [not so empty] iphone so I can ...