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

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3answers
76 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 ...
9
votes
2answers
20k views

How to figure out iOS device battery health?

I'm looking for ways, similar to coconutBattery for OS X to figure out current health of battery for iOS devices.
1
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3answers
6k 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 ...
0
votes
0answers
19 views

iphone 4s won't hold a charge

I updated my iphone 4s operating system to 8.1.3 , now the battery drains from a complete charge in about 5 to 6 hours on stand-by. I replaced the battery with a battery I purchase online. I thought ...
2
votes
3answers
1k views

MacBook Pro shuts down when unplugged

I have a late 2008 MacBook Pro work computer. Here's the sequence of events: I fully charge the battery I unplug the Mac from the power cable The Mac immediately shuts down Before unplugging the ...
1
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1answer
20 views

Magic Trackpad stuck battery

I have a Magic Trackpad that sat unused in a work drawer for a few months. Like a total noob, I neglected to remove the batteries. I recently reconfigured my workspace and decided to start using ...
1
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0answers
29 views

Macbook pro mid-2010 randomly turns off?

This has been happening for around 6 months and it has gotten worse. I thought it was the battery because it had close to 1500 cycles. But I recently replaced it and now the problem seems worse. The ...
0
votes
1answer
29 views

Macbook Pro low battery warning to instant recharge

My Macbook Pro (Mid 2012, OSX 10.10.2) sometimes gives the Low Battery warning, then immediately after dismissing the notification the battery pops back up to about 25% battery, still showing a red ...
1
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1answer
66 views

iPad won't turn on after a complete battery drain

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 happened a few times before and iPad was ...
2
votes
5answers
221 views

How to fix a Macbook Pro (late 2013 model) with liquid damage?

I bought a refurbished 13" Macbook Pro (late 2013 model retina) from the Apple store website in Sept 2014. It worked great till last month, when I had some water leak out in backpack and get through ...
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3answers
1k 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 ...
2
votes
3answers
792 views

iPhone 4S iOS 8.0.2 Shuts off when battery is at about 20%

For the past few days, my phone has been shutting off when the battery reaches around 20%. It will not turn back on until I plug it into a power source. When I plug it in, it automatically powers ...
3
votes
5answers
11k views

MacBook Air Battery is not charging, no light, still be able to power up, battery condition is normal

I experienced this behavior two days ago (My MacBook Air is late 2011 version (4.2): I can still power up my Mac, with or without MacSafe charger connected Battery is not charging There is no light. ...
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2answers
24 views

Old iPad not charging

Old ipad charging indicator comes on but doesn't hold a charge. Doesn't build charge either? Any suggestions already tried cable and new transformer.
0
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5answers
2k views

Iphone 4S 8.1.1 Battery Problem

What else can I do to make my iPhone 4S work for as long as possible? I have done all the "standard" battery saving techniques recommended on most sites, like: turn off background app refresh, ...
1
vote
3answers
2k 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 ...
2
votes
1answer
29 views

Battery issue - backup problem?

I recently bought a new iPhone 6, because my iPhone 5 had some weird battery issues: when I was on 3G or 4G, the battery would literally go down from 50% to 10% in like 10 minutes. On the Wi-Fi, it ...
7
votes
3answers
13k views

iPhone claiming low battery in cold weather

With the cold weather, a rather odd problem appeared on my iPhone 4S – whenever I use the phone in weather below ~12 °C, it turns itself off and claims to be out of battery. This most often occurs ...
2
votes
2answers
1k views

Macbook Air - battery drains while sleeping (but not when shut down)

My macbook air (13-inch, mid 2011) battery drains from ~100% to ~85% over night. The problem only started a few months ago. I'm currently running yosemite, but the problem started while on ...
1
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3answers
59 views

Optimum way of charging apple devices?

I have recently read the article Should you leave your smartphone plugged into the charger overnight? The article listed the following points: You can leave your phone plugged into the charger ...
3
votes
1answer
505 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 ...
7
votes
3answers
612 views

Battery turned into X after Yosemite

After I installed Yosemite on my MacBook Air, the battery icon is just an X. I have tried restarting the computer, and turning off the computer, then back on, but nothing is happening! Even the ...
2
votes
3answers
7k 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 ...
0
votes
2answers
35 views

Why is there a pause before the light comes on/mac starts charging when plugging in?

My mental model of a charger is that you plug it in and electricity fires out of it like a hose whether you like it or not. When I plug in my macbook charger, it often takes a few seconds before the ...
2
votes
4answers
1k views

Will not using battery in MacBook make it last longer?

If I don't use my MacBook on a battery, does it mean that it will last longer? I heard that when you have normal notebook from HP, Asus, Dell, Acer.... no matter if you use the notebook on battery or ...
11
votes
8answers
115k views

Battery diagnostic tool at Apple Genius Bars

I have a one-year old iPhone 5 and it's battery performance has dramatically decreased over the last few months. As I could use my iPhone for over 24 hours a year ago, the lifespan has halved by now. ...
1
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2answers
127 views

Kernel_task boosts CPU to 300%-500% (Yosemitte MBP 2011 without a battery)

Long story short, my oldie MBP 2011' battery started bloating, I've contacted a repair service center and they advised me to remove the battery and use it on AC power, while they get a new battery for ...
2
votes
1answer
28 views

6hr 33 min to charge last 6% of battery - is this normal?

Exactly as asked - I couldn't figure out why exactly this is happening?
0
votes
1answer
73 views

iPod classic battery life

I have an iPod classic and tend to keep it plugged into a mains charger while playing music up to 4 hours a day. Will doing this damage the battery? Is it better to use all the battery power and ...
0
votes
4answers
714 views

Macbook Air power saving with Thunderbolt to Gigabit adapter

I am considering buying a Thunderbolt to Gigabit adapter to save my MBA power consumption as I can shutdown the Wifi, assume it use a lot of power. Anyone tried before and it works? How many % of ...
4
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 ...
1
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1answer
26 views

iPod Touch 1st Gen charging rebooting loop

I have a 1st Generation iPod touch. When I try to charge it, it goes into a loop: The very low battery logo displays The black screen with white apple logo is displayed The screen shuts down ...
2
votes
0answers
30 views

Why is my rMBP drawing twice as much power as my friend's when idle?

Mine is late 2012 and has 8GB RAM. His is late 2014 and has 16GB RAM. Both have an SSD (although of different size) and both are running Yosemite. We set the brightness to 6 pips each and turn off ...
11
votes
1answer
229 views

Macbook started to consume battery more quickly

This seemed to happen after I did several things at once (all of which I have since reversed in trying to track this down): installed a (Crucial M4) SSD drive (replacing my old SATA 5400 RPM drive), ...
16
votes
6answers
27k 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 ...
1
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1answer
47 views

iPod Touch will charge from computer USb, but not from AC outlet

I have an iPod Touch. If I plug it into the AC outlet, with a AC/USB power adapter, the iPod will charge to about 20%, and then stop charging. However, if I plug it into a computer USB outlet (using ...
1
vote
1answer
56 views

MacBook Air's battery doesn't charge, Service Battery state, but only 400 cycles

Yesterday everything was fine with the battery in my MacBook Air 13'' 2012 (2 years old). It was lasting for 4-5 hours like new. Today, all of a sudden, the battery has stopped charging at all (I have ...
49
votes
7answers
65k views

Should I disconnect my MacBook Pro's power cord when the battery is fully charged?

Title says all. My friend told me that I need to disconnect the power cord when the battery is fully charged. Otherwise, I will shorten the life of the battery. Is that true? I am going to use my ...
0
votes
1answer
164 views

Is it possible to switch parts between Verizon and AT&T iPhone 5?

I have a water damaged iPhone 5 from Verizon that doesn't work. My cellular plan is also with Verizon. I just purchased an AT&T iPhone 5 from a friend, not knowing that Verizon and AT&T ...
1
vote
1answer
19k views

iPhone 4S - sudden drop in battery percentage

I have an iPhone 4S and I just ran into a really weird issue the third time now: the battery percentage would suddenly drop 30-40-50%. One minute, it's, say, 69%, the next minute it's 25%. If I put it ...
1
vote
1answer
29 views

Battery of my Mac with Problems

When I charge my MacBook the battery goes only up to 99% and doesn't reach 100%. Is this something to worry about and if yes, how do I fix it?
0
votes
0answers
42 views

Apple logo flashing?

Last night my iPhone 4s suddenly crashed and I thought it was because out of battery, even though it was still at 17%. I plugged it in and left it for about 10 mins and it turned back on but it was ...
2
votes
0answers
28 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 ...
1
vote
1answer
181 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 ...
0
votes
0answers
11 views

iPhone 4 would not turn on [duplicate]

I got an IPhone 4 yesterday and it would only turn on when it's plugged and I bought it new, and it would turn off when I remove from the plug. Please help!
2
votes
1answer
44 views

Once I disconnect from the mains, can I leave the charger cable in the Mac?

I use my MacBook Pro on battery as much as possible, recharging when needed and once a month running it down to recalibrate etc. However, when the battery is charged to 100% I unplug the charger from ...
1
vote
1answer
678 views

Macbook Pro Retina Not Working on Battery, but fully charged and cycle count is low

I have an MBPR (15in) that is about 18 months old (no AppleCare). The battery has only 331 cycles on it, and Apple states it should last for 1000. The battery is fully charged, at 100%. If I remove ...
0
votes
2answers
136 views

Iphone 3GS not charging

My IPhone was on 20% last night and I immediately plugged it in to the wall, it continuously kept connecting and disconnecting and at times giving "Charging is not supported with this accessory". ...
0
votes
1answer
72 views

Battery Cycles being used very fast

I am using a 13-inch mid 2014 MacBook Pro with Retina Display. It is about 3 weeks old and already has clocked 13 charge cycles. Is this too high ? Also, I follow the practice of fully charging it and ...
0
votes
2answers
89 views

Is it better for the battery to leave the iPad plugged when charging is done?

I charge my iPad. Later, I notice that the battery is charged at 100 %. Now, what is better to preserve the battery capacity ? Unplugging the cable. Leaving the cable plugged. The answer may ...