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
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1answer
34k views

What causes iPhone low battery crashes? Is there a software fix?

Some iPhone users (especially those with devices that've been in use for a while) encounter a problem where the device crashes once the battery gets low. For example: "After updating to iOS 7 ...
3
votes
1answer
1k views

Regular crashes on iPhone 4S/iOS 6.1.1: due to old battery, or because of updated-for-iOS-7 apps?

For the past 6 weeks, 2-3 times a week my two-year-old iPhone 4S (with no replacement parts) has crashed in the middle of use. I get a black screen with a spinner, and then it powers down. After ...
0
votes
0answers
67 views

Are the new MacBook Unibody Aluminum Batteries better than the old ones?

Of course a new battery is almost certainly better than an old one. That's not what I'm asking about. I used the same battery in my Mac for five years but it sucked from day one really, only lasted ...
1
vote
0answers
53 views

Can anything cause the battery “cycles count” to appear LOWER than it really is?

My Macbook battery is essentially dead. It has behaved erratically for the past 1.5 year. In any case I checked the cycle count today and found only 270 something. If I recall correctly, I had much ...
2
votes
2answers
641 views

Ways to extend lap top battery life on Mavericks

What are some ways to extend lap top battery life on Mavericks? I've heard that disabling notification center via the terminal can help. I've also had a friend tell me that disabling window animations ...
2
votes
2answers
372 views

2008 MacBook (A1181) won't boot from battery

I have a 2008 13" (2.4GHz) white MacBook that will only boot from mains power. If you attempt to boot from the battery it's as if it's not even connected. Once you get even past the initial startup ...
0
votes
2answers
63 views

How iPad Air gives almost same battery back up even with less battery pack?

Sorry if it sounds like a noob question, earlier iPads have 42.5Wh battery pack and gives 10 hours of battery. But new iPad Air has only 32.5Wh battery, but it also gives same amount of battery backup ...
0
votes
2answers
805 views

iPad battery drain after update to iOS 7

After update to iOS 7.0.4 from version 5.x, my iPad's battery has only fraction of full charge as fast as in 24 hours. I also noticed that iPad is staying warm even after several hours of idle time ...
0
votes
1answer
326 views

Can imac G3 DV 400 be booted when PRAM battery is empty?

We have an old imac G3 DV 400 MHz (at the moment I do not have access to the machine and want to prepare for my visit.) My goal is to save the data from the hard disk to an external drive and reset ...
0
votes
1answer
115 views

Do i need to worry about a battery that appears to charge correctly but has a “Service Battery” warning?

I have an early 2008 macbook that was running well until a week ago. I noticed the battery was not charging anymore. So I bought another battery for $20 on amazon. I installed the new battery and ...
0
votes
2answers
512 views

How to charge the MacBook Pro from 12 Volts?

Aim: I would like to charge my MacBook Pro (MBP) form a 12V lead-acid battery. However there are no official chargers from Apple for that purpose. There exist quite some alternative products on the ...
10
votes
8answers
107k 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. ...
4
votes
1answer
2k views

How to know the duration of battery usage in one session?

I would like to know how long was my battery running since it's last charge. There is a built-in time-remaining counter but I would like a time-used counter.
4
votes
1answer
5k views

Best practises for battery/charging MBPr

I have purchased my first macbook recently and would like to know what are the best practises for keeping the battery in good condition.
1
vote
0answers
461 views

Dim LED on Magsafe, Macbook Pro won't boot

I have a Macbook Pro late 2008, and today, it suddenly decided to stop booting. The battery level is very low, and connecting the adapter to it shows a very dim green light on the Magsafe connector. ...
3
votes
4answers
2k 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 ...
5
votes
3answers
2k 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 ...
2
votes
2answers
4k views

Why does my MacBook Air 2013 wake from sleep every minute on Mavericks?

I'm having issues with my MacBook Air 2013 waking from sleep into Dark Wake every minute since I upgraded to Mavericks. Whenever it's been to sleep and goes into standby it keeps waking up. This is ...
1
vote
1answer
1k views

Macbook Pro Battery Care [duplicate]

I found instructions about MacBook battery care, but it made me confused. I received my MacBook Pro yesterday. After unboxing, I used it for some time and then I fully charged the battery. I will be ...
1
vote
1answer
545 views

Does the iPad Air stay cooler whilst charging than the previous iPad?

My iPad 4 gets quite hot whilst charging, even without a case. As I get this with every one of my iOS devices, as well as Macs, I always expect this from a device now. However, the iPad Air is much ...
0
votes
1answer
86 views

Can I replace my old model MBA battery with a 54-watt-hour lithium-polymer battery (12 hrs) for the newest model MBA?

I have a A1304 MBA and need to replace the battery with a new one. I was considering to install a 54-watt-hour lithium-polymer battery (12 hours battery life) for the newest model MBA. Is it ...
0
votes
2answers
716 views

Battery charge suddenly drops to 0% even when plugged into mains (Mid 2009 15″ MacBook Pro)

My mid-2009 15″ MacBook Pro (A1286) has developed a nasty habit in the last couple of days. It suddenly discharges its entire battery without warning, and won't start until it's had about 10 minutes ...
2
votes
3answers
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 ...
2
votes
2answers
506 views

5 minute battery life

I have a Late 2011 Mac Book Pro 15" and recently the battery has very quickly gone from several hours of battery life to all of a sudden only apparently having 5-10 minutes and by quickly I mean ...
3
votes
1answer
168 views

MacBook Battery charging

I recently bought a replacement battery for my MacBook battery. In Coconut Battery the Current charge has been as high as 8000 mah, yet the maximum capacity is listed as 6100. When the battery icon ...
0
votes
2answers
231 views

Keeping battery charged at certain level

I keep my MBA 2013 plugged in most of the time. AFAIK for a long term it is better to keep modern battery around 40%. I have seen that some other laptop manufacturers added feature to their drivers to ...
1
vote
1answer
136 views

does these battery stats are reasonable for rMBP? (max charge 98% after 25 full cycles)

I have my rMBP for 14 months, during the first month I barly used it and it was off most of the time. today I'm connecting it to a display (unfortunately the fonts are blurry!) and the lid is closed ...
1
vote
1answer
424 views

iPhone 4S iOS 7 Battery Drain

I have an iPhone 4S with iOS 7.0. Since the upgrade, my battery drains twice as fast. I have applied all the battery saving tips available on the internet (e.g. ...
3
votes
1answer
5k 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
1answer
222 views

Has anyone had troubles with an iPhone 4's battery life failing after upgrading from iOS 6 to iOS 7?

After I upgraded my iPhone 4 from iOS 6 to 7, I have experienced my phone running out of power before the end of the day on a night charge (I know it's easy to run a full charge down during the day if ...
2
votes
1answer
168 views

How the low battery message graphic is loaded?

When your iPhone battery is "almost" dead, it turn off, and then if you want to turn it on again it loads this very informative graphic: The problem is that when you turn on "power button" this ...
2
votes
1answer
96 views

Unsold iPhones & Battery Life

There is a lot unsold iPhones 4s on the Apple Store. According to the "About iPhone Batteries", iPhone's battery should be regularly charged. But in case that the battery is not charge after the ...
5
votes
2answers
7k views

What's the difference between the battery of iPhone 5s vs iPhone 5?

Do they have the same capacity and/or run time for certain identical tasks? I know iPhone 5's battery has a charge capacity of 1440mAh. Has this been improved in the new iPhone 5s and/or iPhone 5c?
1
vote
1answer
817 views

Macbook air 13 2013 in battery drain issue

This is the second time that battery is causing issue. Initially after I bought I gave it to apple service and they reinstalled OS and suggested VirtualBox was causing the drain so I did not install ...
11
votes
1answer
30k 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 ...
1
vote
2answers
195 views

Are there configurable power profiles in Mountain Lion like in Windows?

I started using a Mac few days ago (a MacBook Pro 13" with Mountain Lion). I'm wondering if there are power profiles that I can create and set like in Windows. Do they exist in the Mac world?
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
1answer
352 views

ipod touch 4th gen doesn't turn on

My ipod touch 4th gen has this CYDIA, I accidentally uninstalled one file from it. After that, the ipod crashed and never turned on since then. It turns on (showing apple logo) for 10 seconds, then ...
0
votes
2answers
2k views

I'm wondering if my 13 inch MacBook Air is having battery issues?

This is my current battery information. Could someone please let me know if I need a new battery or what might be wrong with it? Battery Information: Model Information: Serial Number: ...
0
votes
0answers
257 views

How do I get my MacBook to charge?

I have an older MacBook - not the aluminium unibody, the white one. Bought in the US. All of a sudden it has stopped accepting the charge. Once I plugin the MagSafe connector it goes to green ...
1
vote
2answers
749 views

How to reduce MacBook Air 2013 1.7GHz CPU power consumption?

I'm seeking a way to reduce MacBook Air 2013 1.7GHz CPU power consumption -- or any MacBook for that matter -- to save battery life. I want to vary the CPU power consumption variably, so that I can ...
1
vote
2answers
81 views

How is the battery life on the new iPod Touch G5s?

I had an iPod Touch G4 and the battery life was terrible. Has there been any improvement in this area with the G5s?
4
votes
1answer
123 views

Is battery life supposed to go not even a year?

I have a MacBook pro that I got about 10 months ago. It seems like I am already starting to experience battery life issues. I have a charge cycle history of less than once a day since I bought it. I ...
7
votes
3answers
240 views

Event based on battery charge level

I haven't found anything yet so I was hoping maybe someone here had an idea. I want to kick off an even based on battery on an Apple laptop reaching a certain charge level, or when the battery is ...
0
votes
0answers
248 views

New battery stops charging around 85%

I have a 17" MBP for about three years and couple of days ago I changed the battery with a new one in an Apple store. The problem is, charging stops at 87%, the charger led remains orange and ...
3
votes
1answer
5k views

Does the MacBook battery cycle count reset when replacing a battery

I've been reading up on battery cycle counts and checked out my current count on my MacBook (13-inch, Aluminum, Late 2008) - recommended maximum cycle count is 500. I've had this laptop now for over ...
0
votes
4answers
3k views

How long should it take to charge up a new iPhone

I just got a new 64 GB iPhone 5. I left it connected to my MacBook Pro all night last night via the USB cable. It's only about 85 percent charged. Is that normal? Seems like it should be charged up ...
1
vote
1answer
642 views

Retina Mac shows gray screen when waking up

This is the first time that my Retina MacBook Pro wakes up from sleep with a gray screen. After about 10-20 seconds, the MacBook falls asleep again. Some points that might be relevant: The only ...
2
votes
2answers
2k 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 ...
1
vote
2answers
2k views

MacBook Air 2013 battery drained by Dropbox

I just bought the new MacBook Air 13" (2013) and am experiencing dramatic battery loss when using Dropbox and a few other apps. While that is a well know issue with Dropbox, I wonder if there is a ...