How long a battery lasts between charges
12
votes
5answers
12k 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 ...
2
votes
4answers
700 views
Retina Macbook Pro now has faster battery drain
I have disabled Hibernation mode and Deep Sleep mode, I also keep the charger plugged in about a week before removing it if I want to go somewhere with the laptop.
I don't know if this is normal, but ...
1
vote
1answer
592 views
Macbook Pro Battery / Discrete Graphics Card Issues in 10.8.2
I am posting because I currently have a 15'' Macbook Pro (Early 2011 edition) and have suffered from poor battery life since upgrading from Mac OS X 10.7 to 10.8.
Before the upgrade, I could use my ...
2
votes
1answer
64 views
Any danger to letting a MacBook stay on the charger long-term? [duplicate]
I came into possession of a 2009 13" MacBook Pro. Most of the time, it will be used as a desktop computer - but there will be instances when I will need the 5 hour battery.
Is there any danger to ...
-1
votes
1answer
41 views
different MacBook battery models since 2008?
I am wondering if Apple changed the form factor of their MacBook (Pro) batteries since Early 2008?
I was planning to replace my broken MacBook Mid 2010 Unibody with a used MacBook Pro from early 2008. ...
0
votes
1answer
72 views
Do apps placed in the background consume resources? [duplicate]
I've heard that leaving open apps on an iPhone, affects the duration of the battery's charge. Is this true and documented, or some of an urban legend? And does it affects other apps' performance?
3
votes
2answers
2k views
Using memory with a higher MHz rating?
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 ...
0
votes
1answer
575 views
iPhone 4S - sudden drop in battery percentage
I've bought a half-year-old iPhone 4S a couple of weeks ago 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, ...
3
votes
3answers
1k 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 ...
0
votes
1answer
81 views
Macbook Air 1,1 power consumption
I have the original MBA, and I have extremely high power consumption - see the screenshot (screenshot got while TextEdit only was running)
Is is normal for original MBA?
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% ...
1
vote
1answer
41 views
Charge cycles increase?
This is a bit weird, I've been doing everything to keep the battery health great and that's what i achieved so far. it's going through 99-100%, but the thing is.. those charging cycles thing are ...
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 ...
1
vote
2answers
865 views
How often should I remove the charger from my rMBP?
I want my battery to remain healthy. I used to charge it full then remove the charger after it's done, then put it back on when it goes down to 10% .. However this is becoming hectic and I was ...
1
vote
1answer
126 views
My new MBP Retina needs to be recharged after 2 1/2 hours
I got my 13" retina MBP a few weeks ago, and used it quite a lot since then. However I noticed that battery drains incredibly quickly, I'm asked to recharge it after 2 1/2 hours of usage.
I'm using ...
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 ...
1
vote
2answers
816 views
Force integrated graphics card on OS X 10.8 Mountain Lion when working with VMware Fusion 5.x?
I want to force the GPU on my 2011 MacBook Pro 15 (A1286) to remain on the integrated GPU while I run VMWare Fusion 5.x.
The gfxCardStatus software doesn't work on 10.8. Is there another solution?
3
votes
1answer
197 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?
0
votes
1answer
663 views
Apple Battery Charger - does not charge to 100%?
I have recently purchased the Apple Battery Charger and immediately charged the batteries that came with it. A few days later (3 or 4) I placed the batteries into my mouse and noticed that they only ...
0
votes
0answers
274 views
Disabling Hibernation AND DeepSleep mode on Retina Macbook Pro reduce battery life?
I am currently on 90%, HDMI connected to 2nd monitor, about 5-6 links open in Safari, terminal running (coding on python), Stickies, Messages, and Mail are running.
My battery has 2h of remaining ...
0
votes
0answers
30 views
How do you know when the battery has absolutely no charge?
I'm trying to reset the battery indicator on my iPod touch. To do this I need the battery to be completely empty first. How do I know when this happens?
Right now I can turn it on and it will have ...
0
votes
2answers
142 views
How to improve the iPhone battery?
Hi all I was looking for a solution to prolong my battery life potential.
Is there a replacement battery for iPhone that is more powerful than the one in-built when we bought it?
Or is there an ...
1
vote
2answers
297 views
Do MacBooks slow down when not connected to power?
I recently read about a device that reported its "minimum CPU speed" (which was 50MHz; max was 1500MHz) and I wondered if my MacBook Air (and other devices like iPhone/iPad) slows down the CPU when ...
0
votes
2answers
2k views
Macbook Air short Battery Life
I purchased Macbook Air 13 in late 2012. It is advertised as having 7 hour battery life. After a few months of use, with maximum charge it gives me only 2 hours.
Is this normal?
1
vote
1answer
382 views
Keeping MacBook Pro on Sleep Mode for days
I usually use my MacBook Pro for programming purposes and is mostly open about 14 hours a day, with 2-3 hours being plugged in until the charging is complete and then I disconnect from power ...
0
votes
1answer
138 views
Using iPhone's GPS in remote areas
I plan to go hiking in an area where I do not anticipate there being much cell coverage at all. What there is will likely be very spotty. I would like to use the All Trails app to track my progress ...
2
votes
1answer
450 views
iPod Nano battery loses charge when it's cold
My fourth-gen iPod Nano has very recently started to completely lose its charge when I'm outdoors (currently it's a bit colder here, about 10°C / 50°F).
Indoors, or when it's warmer, it still manages ...
-1
votes
3answers
447 views
iOS 6 kills battery life
I live in the Boston area (zip code 02421). Since upgrading to iOS 6, both my iPhone 5 and iPhone 4S are getting really hot and last only 4 hours maximum, even in standby.
Also, AT&T notified me ...
0
votes
2answers
484 views
Is it normal for a 2011 MBP to display “Not Charging” while using Skype?
Whenever I use Skype, my MBP displays "Not Charging" about 95% of the time. When it is charging, it is extremely slow, gaining 1% over maybe an hour or so. Additionally, if I start using Skype on ...
3
votes
3answers
3k 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 ...
10
votes
1answer
167 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),
...
3
votes
1answer
101 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, ...
0
votes
0answers
181 views
poor battery life when MacBook Pro is 'sleeping'
I have a early 2011 MBP, Mountain Lion (OS 10.8.2), a Crucial M4 SSD and I have noticed that the battery performance when the computer is 'sleeping' with the lid closed is crap. If I got to bed at ...
0
votes
0answers
191 views
What performance or battery impact does FileVault2 (disk encryption) have on a MacBook Pro Retina?
I'm interested in seeing the performance difference (or load) of FileVault 2 on a MacBook Pro Retina (with SSD)
What are the performance differences and power consumption differences with and without ...
2
votes
2answers
201 views
First cycle of MacBook battery: runs at 97% capacity, is this normal?
I ordered my brand new Macbook Air with 8 GB RAM and picked up from Apple Store two days ago. However after fully running out of battery for first time, I recharged it to 100% and coconutBattery says ...
3
votes
4answers
979 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 ...
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 ...
0
votes
0answers
57 views
iBook battery repack
I have several ibook batteries that have gone bad and I was wanting to open them up and make some good batteries out of all of them by taking out the bad cells and putting other ones in there place, ...
-2
votes
1answer
67 views
My IPod keeps burning up then the battery dies. [closed]
My IPod keeps burning up then the battery dies, i don't know why its doing it all of a sudden.
Anyone know what is causing this?
0
votes
0answers
25 views
Possible to only AV scan while computer is on AC power?
My battery life dropped to 50% on a Macbook Pro within 40 minutes due to a AV scan. In addition the laptop itself got very very hot.
I'm currently using the free Sophos software and don't see an ...
1
vote
1answer
152 views
How to check how much battery each application uses?
How would one check how much battery an application uses from a full charge of 100%?
Are there any applications out there or is this impossible?
0
votes
0answers
55 views
Unusual increase in power consumption
Ever since I upgraded my Macbook Pro O.S to version 10.8, I have been noticing that the battery drains out way to sooner after charging it completely.
Can I debug this to know what, if any, is ...
1
vote
2answers
3k views
How does using GMail via IMAP or Exchange affect battery life?
What are the differences with respect to battery life between using the regular Gmail setup as opposed to the Exchange setup?
I know that the Exchange allows for push, but is battery life affected ...
0
votes
0answers
222 views
How frequently does Passbook use the GPS
Finally Bookings update is App, which is now compatible with Passbook.
By going to My bookings and selecting a reservation it is possible to add it to passbook.
Now, as far as I understood, this ...
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.
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?
40
votes
7answers
20k 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 ...
0
votes
1answer
5k views
iPhone 5: Heating up (and losing battery life) on “4G” [closed]
My new iPhone 5 (I preordered mine from AT&T on the morning of the 14th and received it on the 21st, so I might have one from one of the earlier batches) likes to heat up intermittently.
I've ...
0
votes
3answers
4k views
Poor battery performance after SSD install
I recently installed a Crucial SSD into my Macbook Pro (2.66 GHz Intel Core i7), and now the performance of my battery is probably about 50% of what it used to be.
I've tried to reset the PRAM, but ...
0
votes
1answer
449 views
iPhone battery life: Siri or iOS 6?
I updated my iPhone 4S to iOS 6. I suddenly activated Siri (because finally it comes in my language) and in this days I noticed that my iPhone battery life is less than previously.
This problem is ...
