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

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How much difference is made on battery life when keeping mobile data switched on along with WiFi?

What if I turn on Mobile Data whole day along with WiFi? In this way, How much more battery is going to be used up? I have WiFi connection at my home.. But sometimes it stops working.. And it's ...
2
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2answers
39 views

MacBook Air 2012 won't charge or boot

I have a Mid 2012 11" MacBook Air that won't charge or boot. I've tested the charger with multiple other MacBook Airs, and the charger works fine. I have researched this and have done everything from ...
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2answers
29 views

Fine to keep macbook on power for unlimited time? [duplicate]

I just got a used Macbook Pro (retina) 2012 running El Capitan. I am keeping it charged and on all the time. Is there any harmful effect from doing so on the battery in the long term?
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5answers
28k 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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0answers
4 views

Mid 2012 MBP shuts down claiming no power with charge at 30% or 40% or more

I have two mid 2012 MBPs. Sometime last year they both started randomly shutting down and showing the 'please plug me in to power' image when trying to start them up. That would be fine if the batter ...
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5answers
24k views

Does overcharging a MacBook degrade its life?

I have an early 2011 13" MacBook Pro and I use it almost like a desktop. I leave the power cord connected all the time. Is this OK? Am I ruining the computer or diminishing its lifespan?
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1answer
70 views

Extreme energy usage by Spotlight

I recently (two days ago) updated to El Capitan on my work machine (15" MBP, Mid 2015, 2.5 GHz Core i7, 16GB ram, R9 M370X, 500GB SSD) and ever since then, Spotlight has been draining my battery and ...
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2answers
39 views

Debugging charging problem with MacBook Pro

I have a MacBook Pro (unibody late 2008 15") A few weeks ago the charger was causing hassle and eventually the connector came loose. The MacBook eventually lost power. Then, I asked my friend for ...
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1answer
588 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. Recently my iPod ran out of battery so I plugged it in using the charger and the iPod was completely unresponsive. I tried ...
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1answer
1k views

Macbook Pro Retina “Battery Is Not Charging”

My retina macbook pro is currently on 4% but when I plug it in the battery icon up the top shows the plug icon instead of the lightning bolt icon inside it to say it's charging and stays on the same ...
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0answers
29 views

iPhone Outlook app still fetches mail when in Low Power Mode, while the default Mail app doesn't

I'm trying to compare the default Mail app that comes with iOS and Microsoft's Outlook for iOS. The use case I'm particularly interested in is when the Low Power Mode is enabled. From what I ...
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1answer
19 views

Any way to turn on the reduced power mode a macbook uses under battery power, but while plugged into a power adapter?

I have an external battery rigged up for my MBP. It goes through the magsafe adapter. The battery is about twice the capacity of the internal battery. The problem is, the macbook thinks it is ...
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1answer
65 views

Do Sophos and Spotlight conflict and if so, how can I run both applications without problems?

I just got a brand new 13" MacBook Pro at work. I have noticed that Spotlight has been running constantly giving me ~4 hours of battery life. The motivation for getting this laptop was to have the ...
0
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1answer
8 views

Magic Mouse Battery Plug In

I'm new to mac and everything around, I just want to know if I can code a sort of plug-in to show the batterie of the magic mouse, in the menu bar. What is the type of template i have to choose in ...
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0answers
42 views

Why a sudden increase in CPU when battery low?

My Macbook Pro (Retina 13" late 2013, OSX 10.10.5) has fine battery life overall - this is not the problem. However, when the battery drops below about 8%, and before I normally get any "your ...
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4answers
11k 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 ...
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1answer
23 views

Will Apple service secondhand iPad still under warranty?

I bought an iPad on eBay a few weeks ago. It's still covered under the original Apple warranty. There's a clear problem with the battery. Will the Genius Bar staff look at and service this device if ...
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2answers
538 views

Is it safe to install a third party high capacity battery into my iPhone 5S?

I stumbled upon this battery on Amazon and I was wondering if it'd be safe to install it into my iPhone 5S, assuming it's actually compatible.
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1answer
1k views

Receive notification when battery 100% charged

Is there any way to receive a iOS notification when you are charging your iPhone and the battery charge level gets to 100%? Or any third party app? Thanks.
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2answers
2k 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 ...
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0answers
12 views

iPhone turns itself off on startup

So lately I have got my first iPhone 4S and I have had turned it on for two days straight on a start-up screen as I didn't set it up yet (no time), however it turned itself off while having around 80 ...
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2answers
109 views

How to enable display on Dell monitor connected to MacBook Pro when not charging?

I've just purchased a Dell P2415Q monitor which I've connected up to my MacBook Pro (running OS X El Capitan). Everything works great in terms of the display, however I've noticed that it goes into ...
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1answer
65 views

iPhone 5s Battery

Ok here's the breakdown: I just bought an iPhone 5s from a girl on the Internet. It wasn't in perfect condition but nothing was wrong to make it not run good. I was only on the phone for about 20 ...
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2answers
38 views

At how many battery cycles should I consider replacing my battery?

My battery has become quite a pain in the neck recently, It's not lasting much more than about 2 or 3 hours and that's usually just using basic programs like chrome or pages etc. It's difficult for me ...
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0answers
9 views

iMac retina 27 inch and OS1o.11.4

In System Preferences, the battery level indicator for "keyboard" (bluetooth) seems to be stuck on 100%. It never goes down. But the indicators l for both the Apple mouse and the Apple track pad do ...
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1answer
31 views

3180mAh battery for iPhone 5, is it safe to install?

My battery is very weak in my iPhone 5, and I want stronger battery. I can buy double the size, around 2880mAh, but I want even stronger and I found one on eBay, battery for iPhone 5 with 3180mAh. Is ...
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4answers
9k views

Is there a shortcut for activating Low Power Mode in iOS 9?

I don't use my iPhone with a mobile data plan and I don't care if the polling frequency for background apps gets lowered a bit. Is there an easier/faster way to activate the Low Power Mode than using ...
4
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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 ...
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1answer
32 views

Macbook Air 13" 2014 battery drain

Okay well so this Macbook i have isn't giving me a full time its rather dying our very fast!! even after i don't know resetting the smc and the nvram and i have no idea whats going help its really ...
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2answers
22 views

MacBook Pro mid 2009 reports “Service Battery” but works ok

I get a message saying "Service Battery", but it continues working ok. How do I service the battery?
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1answer
39 views

Test iPhone 4s hardware without battery. Possible?

So, I have this iPhone 4s, which was broken. So i replaced the screen. While I was replacing it, I accidentally broke the black wire that connects the battery to the motherboard. So I dont know if it ...
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0answers
47 views

Severe performance issues with my Macbook Pro Retina 13 - mid 2014

A few weeks ago I bought a used Macbook Pro Retina and I've been having severe issues with it since. The first thing I did when I bought it was to upgrade from whatever version of OSX it was using to ...
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8answers
37k 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 ...
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1answer
31 views

iPhone not turning on when pressing lock button/erroneous charging

When I try to turn on my phone by holding the lock button, it doesn't turn on. It just stays dead. But when I connect the Lightning cable, all it does is show the battery symbol, then go to the ...
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0answers
39 views

Improving the battery life of Windows under Bootcamp

I run Windows 10 through bootcamp on a mid-2014 macbook pro with a discrete graphics card. The battery life is unfortunately about a half of what the system gets under osx. Other posts on ...
2
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1answer
344 views

What's the easiest/cheapest way to replace my battery? 2009 MBP

I have a 2009 MacBook Pro (5,5); also identified as the A1278 (EMC 2326). I can spend about $150 either taking it to the Apple Store and having them replace it or buying all the stuff from iFixit.com ...
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2answers
48 views

When apple replaces the battery in a 15" MBP retina, do they replace the entire top portion of the case?

Apple's site says it is $199 to replace the battery. Do the techs replace the entire top portion of the case including the keyboard and trackpad? I've read a few things on the internet alluding ...
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0answers
11 views

battery diagnostics ipod touch 5g

I recently bought an iPod 5th generation off of Craigslist and I'm pleased with the device, however the battery does seem to run out fairly quickly. This in itself may not be an anomaly, however it ...
16
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1answer
3k views

I don't ever use Siri, but it's using too much battery

I never use Siri, but when I look what has been draining my battery it says it's Siri!
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0answers
21 views

Why can't I turn on my MacBook after resetting SMC

Lately there've been some problems with the charger of my MacBook 12 inch. I searched on the internet and I was advised to reset the SMC by shutting down the MacBook, pressing shiftalt/optctrlpower at ...
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0answers
17 views

Can I use the battery from an early 2014 MacBook Air in a mid 2012 Air?

I just bought a used mid-2012 MacBook Air to replace the early-2014 model my dog killed but the battery life is terrible comparatively. Can I take the battery out of the 2014 and use it in the 2012 ...
1
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2answers
45 views

Is it safe to charge a MacBook Air after the green LED shows?

Is it safe to charge my macbook after the green light shows? Would it not overcharge the battery, or reduce its lifespan? I've heard that doing this is completely safe and it increases the cycles or ...
0
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0answers
16 views

What are the specifications of the battery inside a 13-inch MacBook Pro with Retina Display?

The Apple website has the following information about the battery: Built-in 74.9-watt-hour lithium-polymer battery Line voltage: 100V to 240V AC Frequency: 50Hz to 60Hz I need exact ...
0
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1answer
44 views

Best practices for Macbook Pro usage [duplicate]

I have a new Macbook Pro and I want it to last and keep a healthy battery. How do I best ensure this? If I am using it, do I let it discharge, or leave it plugged in? If I am discharging it / ...
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0answers
97 views

I've changed my iPhone 3g battery, but it's stuck on 61%

Hey guys I did a search and couldn't find anything that really suited my situation. I recently changed my iPhone battery, the phone turns on and the battery decrease immediately. It decreased 1% ...
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0answers
1k views

iPhone 5 panic IPS after changing battery

I have a problem with my iPhone 5, it all began in the moment that I put my phone to charge after which I realized that my phone wasn't charging. When I disconnected it, I see that the battery ...
2
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2answers
1k views

Macbook Pro Fan fullspeed, no temperature and keyboard backlight

I've got a Macbook Pro 2008 15" 4,1 with OS X Yosemite 10.10.5 and the latest Firmware and both fans run the whole time at fullspeed. My research brings up, that it's probably the temperature Sensor, ...
2
votes
0answers
64 views

How do you ascertain that the battery drain in an iPhone is software related

So, my iPhone 6 Plus battery has been draining very badly. Whereas I used to get over a day on a single 100% charge, I barely make it half a day now. Even the charging in takes whole night even on a ...
4
votes
1answer
105 views

What's the best way to prolong the lifespan of a Macbook Pro battery?

I have two Mac book Pros: A 2013 Unibody retina that I use every day An older 2006 model with removable battery that I use a couple of times a month (when not in use, it's not connected to the AC. ...
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0answers
166 views

My Macbook Pro dies randomly, doesn't start, and Apple couldn't solve it

I brought my MacBook Pro, retina, 13" late 2013 to the Apple Store to find out what's wrong. They couldn't replicate the problem, therefore they couldn't give me any answers. I know of others who have ...