How long a battery lasts between charges
40
votes
7answers
21k views
I am missing the option to see the remaining battery life as time in the menubar?
In previous versions of OS X the battery indicator in the menubar included options to show the remaining battery life as percentage or time (or nothing).
In Mountain Lion, there's only an option to ...
26
votes
13answers
24k views
Why is iOS 5 draining my battery so fast?
My wife's phone went from lasting a full day to needing a recharge every few hours after upgrading to iOS 5. Mine still works fine after the upgrade. What might be causing this?
23
votes
6answers
6k views
What are the best practices for battery longevity?
How do you maximize the cycle count of your battery?
There seems to be a debate between:
Leave plugged in 24/7 but do a full cycle once a month
Charge to ~100%, drain to ~10%, repeat.
NOTE: ...
13
votes
4answers
2k views
Can iPhone battery apps actually prolong battery life?
I've seen a few apps that claim they do some kind of conditioning/deep charge/other jargon to extend the life of an iPhone battery. Is this just hokum or do I really need one of these apps to maximize ...
12
votes
5answers
13k 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 ...
12
votes
2answers
6k 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 ...
10
votes
2answers
2k views
Should I avoid booting my MacBook if it's really cold?
As the title says; if my MacBook has been exposed to minus degrees, should I wait for it to reach room temperature before I boot it or am I just paranoid and have nothing to worry about?
10
votes
3answers
3k views
Should I use the adapter or the battery?
I want to know when my MBP's battery was fully charged it's better to unplug my adapter and use my battery power or still let use adapter power?
I somewhere read that when MBP's battery was fully ...
10
votes
1answer
176 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),
...
8
votes
3answers
6k views
Why does my MacBook Pro die without warning?
I have a MacBook Pro (about 18mts old) which has recently started to inexplicably die without warning. I'm running it on battery and, yes, it's getting close to the bottom end (between 10 and 25%). In ...
8
votes
3answers
3k views
What are real life iPhone 5 battery run-time expectancies?
I got my iPhone 5 this week.
While browsing with Safari, on WiFi (which I am using to post this question), my battery life drops at a steady rate of 1% per 5 minutes. I have been timing it from 64% ...
7
votes
10answers
13k views
How long should my MacBook Pro battery last?
I have brand new Macbook Pro (15", i5 2.4GHz, 4Gb RAM) purchased at the end of May 2010 and Apple advertises up to 7 hours of wireless web battery life, however I consistently getting only about 4 ...
7
votes
10answers
4k views
How long should a 2007 Macbook battery last?
My girlfriend's battery won't last 1 second, so it obviously needs replaced.
But I just bought a new battery from Apple a few months ago and it seems to discharge extremely quickly. Are there any ...
7
votes
5answers
8k views
How can I make my iPad's battery last longer?
What are some of the things I can do to make my iPad (Wi-Fi) battery last a long time once it is charged?
7
votes
2answers
2k views
Why is my battery time so much shorter after jailbreak?
I've been impressed with the better battery time of my new iPhone 4 as compared to the 3G I had before. Yesterday evening, I finally jailbroke the 4, and the battery time today has been much worse ...
7
votes
3answers
817 views
Battery life decreased after upgraded to Lion
Has anyone noticed any battery life decrease after upgrading to Lion?
I'm on MacBook Pro (mid-2010). Before, on Snow Leopard, when unplugged I had minimum 5hrs of life. Now, it's not much above 4hrs ...
7
votes
1answer
4k 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.
7
votes
2answers
21k views
How to maximize Macbook pro retina's battery life when working with AC power?
I'm working 95% of my time with AC power and Thunderbolt Display. Since macbook pro retina's battery are no longer easily switchable I'm concerned about it's life and would like to maximize it. Before ...
6
votes
6answers
4k views
Does Google Chrome have a significant impact on MacBook battery life compared to other browsers?
I've been reading , a bit about users noticing a severe drop in battery life when using Google Chrome.
I'm curious if this is a real issue - and attributed to the rendering/flash engine it uses.
6
votes
1answer
471 views
How is the battery level calculated in the magic mouse?
I wonder how the battery level in the magic mouse is calculated.
This question about battery problems raised another one, I would like to know how the electronics in the magic mouse work and evaluate ...
6
votes
3answers
251 views
Does the real-world MacBook Pro battery life scale linearly with it's capacity?
I have a well-worn battery on my 2010 MacBook Pro. After 467 charge cycles, I get about 3 hours of the normal 6-7 hour range.
Using coconutBattery shows me that the charge capacity is 5783 mAh, ...
6
votes
2answers
166 views
How can I increase battery life with iOS 4?
Since I upgraded to iOS 4 on my iPod touch second generation my battery life is draining very fast. Is there anything I can do to help with that?
5
votes
3answers
375 views
Is there a battery conditioner for an iPod touch?
My iPod Touch's battery is not performming as well as it should. I've had it for a while. Is there such thing as a battery conditioner that might help get the battery performance better?
5
votes
4answers
4k views
How long does the battery last on mid-2011 MacBook Airs?
I know that one of the big innovations in the MacBook Air was in the battery (which gets most of the internal volume of the computer!)
What is a normal loss of battery life (change in usable time on ...
5
votes
3answers
453 views
Which model of Macintosh has the longest battery life?
I was exclusively a PC man (specifically Dell, Gateway, and HP), but I am now planning to buy a Mac, because my sister has a Mac, with a battery life (much) longer than mine, and I would like to ...
5
votes
1answer
2k views
What is the best way to recharge an iPod Touch battery?
I wonder how to handle the recharging of my iPod touch ? I've heard that there are some actions to have to be done regularly or actions that arms the battery (like memory effect etc...)
5
votes
3answers
4k views
Which uses more battery when tethering - Wifi or BT on iPhone 4S?
I'm not really bothered which is quicker - I'm guessing this is wifi anyway. I just want to know which would allow me to get the most life out of my iPhone 4S when tethering to it with may MBP. ...
4
votes
3answers
4k 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?
4
votes
1answer
115 views
Is it good to keep apps closed on iOS devices?
Is it better to keep apps closed (double tap home button, hold the icon, and exit the app), as much as possible on iOS devices? I know the more apps one has open, the more RAM, for example is used, ...
4
votes
1answer
590 views
Is there a way to get the OSX battery icon to display both percentage and time?
I am working on a 2006 MacBook with Snow Leopard.
The battery level indicator has the option to show Time or Percentage remaining. I would like to show both.
Is there a way to enable this?
or
Can ...
4
votes
1answer
683 views
iPhone 3GS battery oddities
I bought a 3GS in August 2009. After about 9 months I started seeing occasional precipitous drops in battery level overnight (i.e. from 50% to "dead", as in all you see is the red "charge me" icon). ...
4
votes
3answers
1k views
When plugged in, does the iPhone use the battery or the external source during heavy use?
I love to play games and do other tasks that quickly drain the iPhone's battery. Sometimes I'll use the phone while plugged into a power supply. Does the iPhone still use the battery when performing ...
4
votes
1answer
682 views
How can I maximise the life of my iPad battery? [duplicate]
Possible Duplicate:
What is the best way to recharge an iPod Touch battery?
Since the iPad battery cannot be replaced, how can I make sure that it lasts as long as possible, preferably ...
4
votes
5answers
5k views
What's the best way to test the battery life on a MacBook Air?
I just recently got a MacBook Air and noticed that its battery life is much lower than Apple's estimate of 7 hours.
Since it is not the same, I would like to benchmark my battery life right now ...
4
votes
1answer
323 views
Is there any study on how which services/sensors consume the battery?
I am looking for some study/comparison on how battery-consuming are specific services/sensors (3G, Wifi, GPS, Bluetooth, accelerometer) in the iOS devices.
Has anyone stumbled across something like ...
4
votes
2answers
2k views
Macbook Battery Cycle Count (Unibody White 2010)
I have a macbook white unibody 2010 (A1342) that is now 17 months old. I'm wondering if my battery is still good? The battery's information is below.
Design Capacity: 5200mAh
Current Capacity: ...
3
votes
2answers
4k views
First steps after acquiring a new MacBook Pro (w.r.t ensuring optimal battery life)?
I just unboxed a new MBP 13.3 inch i5. I wanted to know what is the best way to start using it, so as to ensure optimal battery life i.e.
Should I charge it to full capacity, before even booting it ...
3
votes
2answers
1k views
How does the new iPad's Retina Display affect its battery life?
As we all know, the new iPad has a gorgeous new Retina Display. And yet, it's advertised to have battery life just as good as the iPad 2's.
How is this possible? Doesn't the new display require a lot ...
3
votes
2answers
2k views
Using memory with a higher MHz rating? [duplicate]
Can MacBook Pro's successfully support and fully exploit RAM of a higher MHz rating than that which they ship with?
For example, take my 15" MacBook Pro (Late 2011) that ships with 4GB of 1333MHz ...
3
votes
3answers
2k views
Is it wise to turn off the iPad completely if I don't use it during the day?
A friend of mine has an iPad that she uses only once a day for about a half hour.
I told her to turn it off completely in between uses to conserve energy - no point having the device run in standby ...
3
votes
3answers
2k views
Does the 2011 13" MacBook Air have a longer battery life than the old one?
My understanding is that the new MacBook Air 2011 is using a new Intel CPU that uses less power. I expected that should mean either longer battery life or a lighter computer, but I can't remember how ...
3
votes
4answers
986 views
How do I stop iOS 4 from draining the battery of my 2nd gen iPod Touch overnight?
Every since "upgrading" my 2nd generation iPod Touch to iOS 4, it seems to lose power overnight (when not plugged in). What can I do to fix this? I have tried a restore and that did not work. Seen as ...
3
votes
1answer
230 views
Is switching 3G/4G off to save power a cheap trick?
Since UMTS is a lot fast than EDGE, data transfers via UMTS take less time.
When downloading the same file, it would take longer to be downloaded via EDGE.
Doesn't the difference in transfer time ...
3
votes
2answers
123 views
Does Avast noticeably affect battery life?
I am thinking about installing the free Avast anti-virus software on my MacBook Air (2012). Once Avast has completed its first scan of all of the files, does its continued operation noticeably affect ...
3
votes
1answer
171 views
Why hasn't my battery life improved even though I changed the battery?
I have a mid-2009 white MacBook. About a week ago, I switched the aging and failing battery for an identical new battery I got off eBay (supposedly original part and new - looked legit both in ...
3
votes
2answers
1k views
Battery cycles for rMBP and recharges?
So I got my first Apple laptop, a Retina MacBook Pro.
I heard that its best to let the laptop discharge until 0% in order to restart the battery cycle or something like that. However I know that ...
3
votes
5answers
506 views
Battery life on a core i7 Macbook Air
I recently purchased one of the new core i7 Macbook Airs and in most respects its amazing. The one problem is that the battery life is far less than the "up to 7 hours" Apple claims. In moderate ...
3
votes
3answers
532 views
Hibernate MacBook on 10-ish % power instead of 0/1% when running on battery?
Yeah, I know my battery is probably hosed, but every time I reach 5%, my MacBook shuts down, as it expects the battery to be able to run down to 1% before hibernating.
However I would like it to ...
3
votes
2answers
178 views
What is Best Practice when storing MacBooks for over a month?
We have a pod of 30 MacBooks and MacBook Pros that don't get used over the holidays.
What's best practice to store the laptops for 6 weeks? I know that when you store laptops for long periods at ...
3
votes
1answer
252 views
Does iPad battery charging utility like Battery Boost Magic pro really make a difference in prolonging iPad's battery life?
Do battery charging utilities such as Battery Boost Magic pro or Kingsoft battery doctor really make a difference in prolonging the life of an iPad battery?
