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
9 views

Battery life of macbook air with different hardware configuration

Apple states that the 2014 11-inch MacBook Air has a battery life of 9 hours and the 13-inch model has a battery life of 12 hours. These stats are for the default configuration: Processor: 1.4GHz ...
0
votes
0answers
5 views

What behaviour should we have against batteries of a Mac? [duplicate]

I have read this general post where some people give some suggestions about the behaviour we have to adopt against the batteries of laptops. People, for example, don't suggest to remove the cable of ...
10
votes
1answer
24k views

How can I assess the health of my iPhone 5 battery?

I suspect my iPhone's battery is now much worse than it used to be. How can I assess this? Is there some kind of test I can make, to compare it with Industry average? How long can I reproduce a ...
2
votes
1answer
3k views

Can a MacBook Air battery be replaced?

I have a MacBook Air which is an awesome computer, however I am curious what my options will be when the battery finally kicks the bucket. Can it be replaced?
0
votes
1answer
20 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 ...
1
vote
1answer
79 views

Are my battery cycle counts increasing when MBP is on and plugged in?

I often leave my Macbook Pro (13" - Late 2011) plugged in while working on it with the charge at 100%. This post suggests that when the battery is at 100% and the laptop is plugged in, the battery ...
0
votes
2answers
552 views

Can an iPhone be force started before the 15 minute recharge period?

There are times when the iPhone is at low battery level that it turns itself off. Sometimes, it maybe when I am going to charge it but looking for where my cable is, it turned itself off. So I ...
0
votes
1answer
20 views

Battery replacement on MacBook Pro 13" Early 2011 considerations

I need to replace battery on MacBook Pro 13" Early 2011 and I've already found the one in the local shop, but I am not sure it will fit. Old non-working battery has the following parameters: Model ...
4
votes
5answers
1k views

No Batteries Available ?-How to Check battery health on MacBook Pro early 2011

A few days ago, I went on vacation and unplugged power cable from my MacBook Pro 13' early 2011 and then I got back home, the battery was not detected by OS and didn't charge. I then understood that I ...
0
votes
1answer
17 views

Installed a new LCD screen on iPod but concerned to charge

As stated, I just installed a new ipod touch 4th generation LCD. As many youtube tutorial layout I went ahead after installing my LCD to power on the screen. However, here is my dilemma, the battery ...
0
votes
1answer
137 views

Macbook power adapter issue: PPP003

I'm using Macbook Pro 15" Retina Late 2013. OS is Yosemite Public beta. Once in month I usually do diagnostics (Apple's boot time diagnostics, the when you press "D" ). The last the when I did it, I ...
-1
votes
0answers
32 views

What sort of battery life is the apple watch getting [closed]

It's still a while till it's released but what sort of battery life is the apple watch expected to get? I know some people have hands on prototypes and they've been available for handling at some ...
2
votes
3answers
12k views

Why does my battery drop with 1% within a minute after removing the charger?

I just got a new iPhone 5S a week ago. Works perfectly aside from the fact that the battery tends to act weirdly. As mentioned in the title, when I remove the charger the battery percentage drop by a ...
9
votes
8answers
70k 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. ...
3
votes
1answer
4k views

Does Battery Usage/Percentage need to be calibrated again?

I recently installed iOS 7 on an iPhone 4S. Does the Battery Usage/Percentage (as shown in the top-right corner of the screen of the phone) need to be calibrated again (by letting the battery fully ...
0
votes
0answers
121 views

Iphone 5 Panic IPS After Changing battery

First I will like to say sorry for my English that it’s not the best In the world. I have a problem with my Iphone 5, its all begin in the moment that I put my phone to charge after that I realize ...
1
vote
3answers
2k views

iPhone 5S gets very hot and drains battery

My iPhone 5S is getting very hot and the battery drains like 5 % in 30 seconds. I've tried it all, restoring and stuff and I've read that the problem is with iCloud. So I've deleted my iCloud account ...
5
votes
3answers
1k views

Taking battery out of my MacBook Pro

Yesterday I bought my first Mac, the new Macbook Pro 13". Apple recommends not having the battery charged connected to the MacBook if the battery is 100%. In other laptops I had, I could just remove ...
4
votes
2answers
621 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 ...
2
votes
2answers
3k views

iPad turned itself off and won't turn back on

I was just reading a webpage on my iPad and the screen went black and then the Apple logo came up and then the spinning loading wheel and it just went black... Nothing after that. The screen is ...
2
votes
2answers
5k 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 ...
2
votes
2answers
2k views

iPad boot loop only when powered - brief flash loop when connected to USB - jailbreak gone awry?

Received an iPad from a customer in an unknown state. Report was "does not power on". Device is out of warranty. It's the 1st generation iPad with a 3G chip. Symptoms: when connected to power only, ...
16
votes
3answers
10k views

Why does GPS on the iPhone use so much power?

I keep reading in articles that GPS on the iPhone, or any cell phone for that matter, uses a lot of power, but I've never heard an explanation of why. Why is this? The phone doesn't have to transmit ...
41
votes
7answers
49k 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
2answers
741 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 ...
3
votes
2answers
2k 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. ...
2
votes
4answers
3k 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 ...
2
votes
2answers
1k views

Macbook Pro Mid-2010 15" is not charging with dim green light

I have spilled a bit of water on the keyboard of my Macbook Pro this Monday. It continued working just fine. So, I took it home, and 2h later, when I pluged the charger in, the light turned into a ...
3
votes
1answer
43 views

MacBook discharging while plugged in under load

I have the latest Retina MacBook Pro MacBookPro11,2 I quite often have the CPU at about 400%-500% usage (e.g. 4-5 cores at 100%) and also do GPU intensive tasks. While this is happening, the battery ...
4
votes
2answers
4k views

My MacBook Air won't charge

My MacBook Air won't charge, the MagSafe doesn't even have that green or red orange light and when it does it isn't very bright. The Battery Icon on the upper right corner indicates not charging. ...
0
votes
1answer
35 views

MacBook Pro - Only runs while MagSafe charger connected

My 2013 MacBook Pro only runs while the MagSafe power charger is connected. Model Number: A1425 (EMC 2672) When the charger is disconnected system immediately powers off (no shutdown). MagSafe ...
0
votes
0answers
45 views

MacBook Air randomly “dies” on a full/near full battery

Since the beginning of the month, I've had a strange issue with my 2010 MacBook Air (2.13 Ghz, 4GB Ram, 128 GB SSD). It will run fine when plugged into the MagSafe, but running on battery it'll ...
2
votes
1answer
23 views

I have a MacBook (2008) that sleeps as soon as you put in a battery

This MacBook runs perfectly without a battery. Putting in a genuine new and aa genuine used battery does the same thing. The screen goes dark, you can still see the screen for a second and then it's ...
-1
votes
1answer
22 views

Macbook battery problem

I have a MacBook 13" (A1181) running Mac OS X 10.6.8, I have a problem with the battery When its turned off it responds to power button only when charger plugged in. After starting i can remove the ...
-5
votes
1answer
557 views

IPAD MINI WONT TURN ON!!! even after charging and it doesnt show a battery symbol

Ive got an ipad mini, and it is completely dead. I mean dead as it doesnt come on at all even if i charge it over a day. It doesnt even show a battery symbol when you turn it on. ive tried all the ...
2
votes
3answers
1k views

macbook pro absurdly small battery life

My Macbook Pro lasts me about 1.5 to 2 hours max on a single charge. This feels ridiculously low. What can I do to increase the battery life on Macbook Pro? Battery Information: Model ...
0
votes
3answers
438 views

Poor battery performance on MacBook Pro [duplicate]

I have recently bought a very expensive new MacBook Pro with 8 GB memory and now I am frustrated by its very fast battery drainage. Often I see only 2 hours left on full battery charge! Right now it ...
0
votes
0answers
27 views

Battery Dead or Normal

I have an unusual problem. I have an 11" MacBook Air (Mid 2011). I am only able to use it via the power adapter although no light on it of any colour at all. When I check the battery in System ...
1
vote
0answers
84 views

Disparity between “Charge remaining” and “Full Charge Capacity” on relatively new MacBook Pro?

I have the latest retina MacBook Pro. While looking at some statistics, I saw the following: My computer is currently on 100% charge (charger is plugged in), and it seems odd that the difference is ...
0
votes
1answer
36 views

What is the ideal charging behavior for a new Retina MacBook Pro? [duplicate]

I've called Apple Support a bunch of times, but I got conflicting answers. To my knowledge, new technology makes it okay to keep the charger plugged in non-stop, but I want to make sure I am properly ...
0
votes
1answer
37 views

How's battery life of the Oct 2013 Macbook Pro 15" Retina?

I am using a Mid-2013 MacBook Air 13" and the battery life is great! Now I am considering upgrade to a bigger screen and is checking a refurbished Oct 2013 MacBook Pro 15" retina. Everything seems ...
3
votes
3answers
1k views

App offering audible alarm for low battery on Mavericks?

I installed the update to Mavericks a few days ago, and while it's mostly been great there is no longer a sound that goes with the low battery warning. I have several programs which suppress the ...
0
votes
1answer
33 views

iOS device battery life when developing

I have an iPhone and an iPad that are constantly connected through USB to my MacBook Pro 8 hours a day. The battery of both device is always at 100%. Will this hurt my devices battery life? I've ...
1
vote
0answers
59 views

Battery Life on MBPr (2014 model) with*out* dedicated GPU

I am considering to try MBPr (late 2014 models) coming from Windows environment, which means that I would still need to use Windows about 50% of the time. One of the strong points in favour of MBPr is ...
0
votes
1answer
89 views

How to test a Macbook Air battery hardware integrity

I spilled water on my Macbook Air last week. The technician had to remove the battery because it wasn't charging. Without battery, the computer runs fine. I'm thinking of purchasing another battery, ...
5
votes
1answer
1k views

How to have my MacBook Pro safely hibernate when out of juice?

My all new MacBook Pro was on the battery, and warned me that the battery was almost finished. I left the Mac take care of himself. Later, I plugged the Mac and I pressed the button Power. Hearing the ...
0
votes
0answers
20 views

do i have a bad battery or macbook?

I have a 2007 17" MacBook pro and the battery stopped holding a charge. I did not have enough money to buy a apple one so I bought third party battery. The battery will charge to full capacity and the ...
1
vote
2answers
48 views

How to find out MBA-2011 13" battery serial number on the battery?

I'm aware of ability to find out the battery serial number via About This Mac. Is it also written somewhere on a physical battery, to be read without turning Mac on? If so, where? Of course I'm ...
0
votes
3answers
155 views

I have a mid-2012 MacBook Air, and the Service Battery alert is showing

My 13" Macbook Air recently started showing the "service battery" alert. It's the mid-2012 model, and is still under Apple Care. The alert seems to appear mainly when I'm running off the battery. Is ...
0
votes
1answer
67 views

Mac does not sleep

There is a week or so since my macbook stopped being able to go sleep, instead it stops by just sleeping the screen, while the system light does not go blinking (and the system won't go sleep either, ...