MacBook Pro :: Extremely High Battery Consumption Rate
Mar 11, 2010
So I have a late 2008 MBP and the battery is draining way faster than it should. Coconut battery says that my battery capacity is at 93% and it only has 73 cycles but the battery has only been lasting 3 hours at best with a full charge, but most typically, it only lasts 2 hours while using the 9400m GPU and at idle. I have reset the battery per apple's instructions 2 times now and I have reset the SMC multiple times. this is what the system profiler says about my power capacity and consumption:
Model Information:
Serial Number:6N839TV313EB
Manufacturer:SMP
Device name:bq20z951
Pack Lot Code:0000
PCB Lot Code:0000
Firmware Version:002a
Hardware Revision:000a
Cell Revision:0100
Charge Information:
Charge remaining (mAh):3522
Fully charged:No
Charging:No
Full charge capacity (mAh):4226
Health Information:
Cycle count:72
Condition:Normal
Battery Installed:Yes
Amperage (mA):-1449
Voltage (mV):11830
This all happened out of nowhere one day, I used to get a solid 5 hours on each charge a month ago and now this.
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Jul 23, 2010
I've noticed that my macbook pro has been using a lot of RAM. I haven't really witnessed a slowdown on my computer b/c of any sort of shortage of RAM but I was just curious if this was typical (since this is my first mac). I have 4 GB of RAM and I often find myself with around 1-1.5 GB of free + inactive RAM. I had a linux system with 3 GB RAM before and it used between 1-1.8 GB of RAM and it seems like this system is using around 2.5-3 GB (active + wired). However, various OS X laptops in the past have functioned really well in the past with 2 GB and even 1 GB of RAM right? Is OS X just putting more processes in my RAM to speed up my system because more RAM is available OR does snow leopard just have high memory consumption?
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Apr 20, 2009
I will be running MS Excel, preview, firefox, and activity monitor. All of a sudden my Activity monitor says that there is about % User of 50% and the fan will start running. I cannot find what program is making it run this high. I quit every program and it gets stuck on this until I restart the computer. I have done this about 3 times and it always comes back. None of the programs are registering high CPU usage. My last computer had an overheating problem where the fan was always on and that was part of the reason I switched to Macs - really hoping that issues doesn't follow me from Windows to Mac.
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Jun 18, 2012
Macbook Air won't shut down and often the fan runs at a very high rate without stopping. I do notice it seems to get hot on the bottom more than in the past. Any suggestions as to what I should do, I can't keep holding the power button down to shut off the computer.
Info:
MacBook Air, Mac OS X (10.7.4)
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Sep 30, 2010
I am trying to use a WD Elements external HD formatted to Mac OS Extended, and the box says that the HD should have a USB 2.0 adapter, meaning it should transfer over 400 MB/s. Unfortunately for me, I've had many problems with this HD and it is now crawling at around 2.5MB/s, slower than 1.1 speeds. At the moment, it is at 750MB/93.51GB - About 21 hours. This is unexceptable, and I make HD videos, which are usually from 200 - 500 MB, and this would take AGES! I had no problems on my PC with this drive. Please help me! Should I format it to something else, get a new one, or something else? Please leave your suggestions below. Also, if you have an HD that works well, please leave it below,
P.S. All ports are free, except for the one with the HD in it. All that I have hooked up to my Late-2009 21.5" iMac is my wireless Apple keyboard, and my Magic Mouse. Nothing else hooked up to the computer AT ALL!
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Jul 13, 2010
I am wondering why my MBP takes about 7-8 mins to copy 700 mb files from the external (Seagate FreeAgent pro 500 Gb) and of course, it takes about 1 hour to copy 7 Gb files.
However, this problem has occurred only copying file from external to my MBP, the transfer rate is fine when copying files from MBP to external
Note : I've already repair the disk by using disk utilities, but it doesn't help me at all.
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Apr 4, 2012
The hard drive on my iMac is filling to capacity at an extremely accelerated rate. In order to have functionality, I had to delete some unnecessary files and used WhatSize to try and determine the culprit. When backing up my hard drive yesterday, Mail was showing to be 91G. The hard drive filled up again a few minutes later so I copied iTunes to an external drive for safe keeping freeing up 85G.
By this morning that was gone as well so I copied contents of Pictures over to external hard drive freeing up 189G. Mail is now up to 244G on my 500G hard drive. I rebooted at that point to see if that would stop the growth and it has currently, but it may start again. WhatSize says there are no duplicates. I am receiving and sending the same amount of mail that I usually do on a daily basis, so that is not the problem.
Info:
iMac, Mac OS X (10.7.3), Mail
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Aug 22, 2009
I have a late 2007 macbook pro and recently the fans have been going at extremely high speeds without the MBP being hot at all. I have SMCFanControl and iStat Pro and both of them said my MBP's temperature was around 55C though the fans were going between 4000 and 6000 RPM, I also checked the activity monitor for high CPU usage but nothing high there. I turned my MBP off for 5 minutes with a fan blowing on it just incase it was hot but when I turned it back on the fans immediately jumped back up to 6000 RPM. They're back to normal now but I assume it will happen again. Anyone know what's wrong?
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Nov 21, 2010
Getting fustrated with my Macbook Pro 15''. Could never get battery to last more than 5-6 hours. This is the MAX i can achieve, with great pains to enhance battery life.
Argh, what's wrong with my Macbook Pro?
Check out the amperage drain. At this rate the Macbook Pro wouldn't last more than 5 hours. This is with half brightness, only finder and Chrome open, and the battery recently calibrated.
The amperage drain increases to -1400+ when i have more tabs open, and a few other apps.
However there was this ONE RARE OCCASION, where my Macbook Pro would only drain between -700 to -800 amperage. This was in normal usage and the battery easily lasted closer to 8 hours. But somehow, i can never replicate this anymore!
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Sep 9, 2009
I have a unibody macbook pro 15 inch, 2.8 Ghz, 4gb ram, 500Gb HDD. There are various display settings like 1440x900, 1344x840, 1280x800, 1024x768 and so on till 640x480 (descending order). Will the battery consumption vary at different display settings? If so, how much of a difference will it make?
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Jan 6, 2009
I get the whole part about that I set my laptop to go to sleep in 5 minutes, and if I close the lid it'll go to sleep, and the little light at the bottom starts to pulse, etc. But in sleep mode, my battery seems to drain extremely fast!
For my old Gateway M275 laptop while in sleep mode, it would probably lose about 5-7% of it's battery in a day's duration. With my MacBook Air, I just came back to it tonight after a day's worth of sleeping, and my battery was down to 16% from 29%. And to check, it was indeed sleeping!
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Nov 7, 2010
we all know flash is a battery eater so to prevent this is install click to flash then it will indicate every pages that runs flash has this word "flash" on webpage which is good thing.now, i am a netflix subscriber and to watch movies you have to install microsoft silverlight..i dont have any choice to install it. if i open a webpage for example cnn.com yahoo.com etc.. how can i determine that those sites are using silverlight?i believe silverlight will cause battery consumption like flash right?
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Jun 13, 2010
Is there a difference in using mbp with a headphone or built-in speakers in terms of battery consumption?
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Oct 25, 2009
For the last few days I've been worrying about my battery, I know it's silly and everything, but it's supposed to have 7 hours. It will go for a good 5 hours, sometimes more than that. But the percentage rate seems to be going down quite quickly. e.g half an hour ago it was at 73%, now at 62%. The battery time also changes quickly, from 6 hours 42, to 2hrs 32, back up to 4hours, etc. I have checked the condition on Coconut Battery and it's at 100%.
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Nov 6, 2010
I have a Rev B, 1.86 128GB SS. It is good except a little weak on battery and heat is still there for anything remotely intensive so my question is: How do you rate battery life of new 13 MBA? My Rev B gets roughly 2 hours watching a HD show from CBS, or 4.5 hours (best case) doing non flash surfing or anything non intensive work, watching photos, writing in word etc. Heat is there if I watch videos, like the example above, routinely around 70-74 watching a video show over the internet. RPM for fan 2500-3000 at that temp. How is the heat of the new one? (I tried one in the Apple store and it bare felt warm underneath while watching an episode on [URL]). My other finding is that the new one felt a little more "solid", cant point to anything specific but a general feel when closing and opening it. Btw, I still run Leopard since I felt that I lost battery time under snow leopard and that it was also slightly warmer under Snow Leopard. Any other difference you have noticed in the new MBA?
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Mar 30, 2010
Two quick questions:
- Is it bad to have the keyboard backlight always on? Will it somehow burn out the little lights?
- How much less battery power will I lose if I have the backlight always on? (I use Labtick).
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Apr 14, 2012
Battery is extremely hot and fan is always running. Regardless if I am watching a video or writing a document
Info:
MacBook Pro
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Jun 17, 2012
My 2012 MacBook pro has a fan running on high from the moment I turn it on and my battery has an 'x' on it.
Info:
MacBook Pro
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Jul 14, 2010
I know I'll never be able to achieve 8-9 hours, but I was hoping for at least 7 or thereabouts. Unfortunately, I only managed a paltry 5 hours on my first two 'complete' discharges. This is with airport and bluetooth on, screen at half brightness and running windows 7 in parallels in addition to the usual browser/office stuff. Is there something I can do to improve battery life? Or is having parallels running all the time draining the battery extra fast? Also, is there some sort of battery monitoring utility that can accurately detect what exactly the battery is doing? I find the default one to be somewhat sparse in terms of details.
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Mar 19, 2012
I've been having an issue with my Macbook Pro, it keeps turning off while on battery power while I am playing a game (Starcraft II) despite having sufficent charge remaining. It won't turn back on until I plug it back in. Usually when I turn it back on the time and date are reset and the password to my wifi has to be rentered. The most recent time this happened after I plugged it back in the battery still had 79% charge remaining. I've tried recalibrating the battery and resetting the SMC both which did not solve the problem. The system report states that the battery's condition is normal and I ran a hardware test which also came back normal.
Info:MacBook Pro (15-inch Mid 2009), Mac OS X (10.7.3)
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Jun 25, 2012
Background: Air i7 Mid 2011 4gb RAM, 256 SSD, purchased in Aug 2011. Battery life is normally 5.5hours with wifi on, blue tooth off. I charge the battery until status says charged then I unplug until I get the reserve power message at 9%, most days I charge 2 times, sometimes 3 times. When I plug in an external monitor using my thunderbolt to dvi or thunderbolt to hdmi my battery life drops to 2.5-3.5hours (extra work, less battery, makes sense), back left is hot and fan is running. When I have apache web server, mysql, php, netbeans, firefox with over 30 tabs, safari with over 10 tabs, thunderbird, avast antivirus, adium, skype and other random pgms loaded my battery life stayed over 4.5 hours, activity monitor at about 80% idle. The back left corner of the keyboard stays cool during this time.Â
I have read the CPU power and cores are adjusted automatically based on usage, and this is what I have found to be true with great consistancy. About 1-2 months ago my battery life dropped to about 2.5 hours. I have been trying to figure the cause. At the same time my back left corner of the keyboard is getting hot like I have the external monitor plugged in. The fan is running all the time. I look at the activity monitor and it shows 80%-90% idle. I have been on the phone with support and we tried the SMC reset, but the fan is just doing it's job of cooling the cpu. Apple phone support seemed to feel this was normal, even though I told them the back left of the keyboard was not normally this way. I have narrowed it down to.... the cpu is being told to run harder than before, so where is the mixedup signal? I began this morning reading all the messages here in the disscussions this am (and there are many with the same description), many references to activity monitor.Â
[URL]- the activity monitor in this will show the process that is using the cpu the most. In my case I had installed HP scanner software 2 months ago, which is badly written and very misbehaved, see the following link. This process would go to 100% cpu every few seconds (not all the time, so I could not see it in the summary, ), shown when I sorted by cpu % usage.Â
[URL]I have removed my scanner drivers. My battery life is back to 5.5hr, back left of keyboard is cool to touch, and the fan is off. My findings, when the back left of the keyboard is hot, the CPU is running hard. External monitors heat up the cpu. Activity monitor can tell you what is using the cpu, by sorting by %cpu usage (don't trust the summary, look at the individual processes, as shown in the link TS1473) and watching for 10-30 seconds, a misbehaved app may not be at the top all the time.
Info:
MacBook Air, Mac OS X (10.7.4)
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Jun 12, 2009
I run the keyboard and screen at max-brightness, airport on, and 15 things open. I get 2 hours of battery life, I'd like another hour or so.
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Jun 25, 2012
Macbook Air isn't a year old and I don't leave it plugged in ever. The battery might last 2 hours and gets very hot. In addition the fan runs at a very high speed. The computer won't shut down in a normal way. I have to hold the power button down to shut it off.
Info:
MacBook Air, Mac OS X (10.7.4)
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Dec 26, 2010
This is my first post, and I apologize as it's a little long. I just wanted to get the whole story on the table and clarified.I've had one of the new Aluminum 13" MacBooks (2.0GHz C2D) since Christmas Eve. A few weeks ago, it accidentally fell off my desk at work (not a far drop , but far enough for my heart to stop for a few minutes) when I got tripped up in the power cord under the desk.
For all intents and purposes, the MacBok seemed to work fine. I had one of our IT staff, who happened to be a trained Apple repair tech, take a look at it; the only real damage was that the display hinge had been knocked a little out of alignment. Just ot be on the safe side, I took the machine to the Apple Store, where they told me not to worry about attempting to get the hinge fixed (because I'd be paying a lot of money for such minor work), and the Genius sold me a hardcover plastic Speck case for the MacBook.
While the Speck case certainly looked nice and madethe already sturdy laptop feel sturdier and "protected", I was a little concerned about the amount of heat the machine was giving off within the case. On Sunday, I unplugged the machine from the MagSafe charger for a few hours and left it closed in sleep mode. When I woke it back up, the fan on the left continually gave off some sort of high-pitched whine whenever the computer was in idle mode.
I Googled, searching this site and others, and read about the "CPU whine" in the previous generation MacBooks and MacBook Pros. I also saw where a few people with new Aluminum MacBooks were having this same issue or something similar:
URL
It seems to only make the noise when the computer is running off of the battery - plugging in the MagSafe charger makes the noise quiet 85% of the time (I've found that plugging, unplugging, and replugging will not stop the whine from occurring).
I tried installing QuietMBP as was recommended in some posts, but the only setting that will stop the computer from whining is the "highest" setting (that is, allowing the processor 0 seconds of idle time), which causes QuietMBP to eat up 30% of my processor usage in Activity Monitor and to start the fans going (and, presumably, to significantly lower my battery life).
I don't know whether all of this was the result of the MacBook falling, from it overheating in the case, or something that "just happened". I set up an appointment with the Genius bar for today at 4 PM, but Idiscovered another odd occurance when I set up a new account for the Apple Store (rather than give them my password)
The noise never happened under the new account. Never. I left the machine idle until any and all initial processes were done. No noise. I checked Activity Monitor for stray processes. None. And no noise.
Now I'm bewildered. Could something have gone wrong somewhere in my account, leading to a corruption of a power management utility or process? I'm not canceling my appointment, but I am going to try a few things before I leave. I've already repaired disk permissions, and I'm about ot reinstall the 10.5.6 OS X combo update. Should I try to reset the PRAM too? What other options should I be looking at?
Or should I just wait, and let the Genius Bar folks look into it? As a note, I'm aware I may have to pay for any repairs because they may or may not blame them on the MacBook having dropped (despite two to three weeks passing between the fall and this issue arising), and I'm okay with paying for reapirs (though I will try my best to argue my case, of course).
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Nov 15, 2010
Is it normal for SSDs to use the same or more power as a HD?
SSD
An OWC Mercury Exreme Pro 40GB SSD uses 2.2W-2.5W when active.
A WD SiliconEdge Blue 64GB SSD uses 2W when reading and 3.5W when writing.
An OCZ VERTEX 2 40GB SSD uses 2W when in operation.
HD
A WD Scorpio Blue (5400rpm, 2.5") 250GB HD uses 2.5W when writing/reading.
A WD Scorpio Black (7200rpm, 2.5") 250GB HD uses 2.5W when writing/reading.
A Hitachi Travelstar 5K750 (5400rpm, 2.5") 500GB HD uses 1.4W when writing/reading.
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Feb 26, 2009
How to calculate the regular MacBook power consumption if it is left on lowest screen brightness for about 12 hours, plugged in, with just a browser running Gmail? The following is the System Profiler->Power Information that pertains to this topic:
Battery Information:
Model Information:
Serial Number:DP-xxxxxxx-xxxx-xxxx
Manufacturer:DP
Device name:xxxxxxx
Pack Lot Code:0002
PCB Lot Code:0000
Firmware Version:0110
Hardware Revision:0500
Cell Revision:0102
Charge Information:
Charge remaining (mAh):4831
Fully charged:Yes
Charging:No
Full charge capacity (mAh):4831
Health Information:
Cycle count:188
Condition:Good
Battery Installed:Yes
Amperage (mA):147
Voltage (mV):12604
System Power Settings:
AC Power:
System Sleep Timer (Minutes):0
Disk Sleep Timer (Minutes):10
Display Sleep Timer (Minutes):20
Automatic Restart On Power Loss:No
Wake On AC Change:No
Wake On Clamshell Open:Yes
Wake On LAN:Yes
Display Sleep Uses Dim:Yes
Battery Power:
System Sleep Timer (Minutes):5
Disk Sleep Timer (Minutes):10
Display Sleep Timer (Minutes):1
Wake On AC Change:No
Wake On Clamshell Open:Yes
Display Sleep Uses Dim:Yes
Reduce Brightness:Yes
Hardware Configuration:
UPS Installed:No
AC Charger Information:
Connected:Yes
Charging:No
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Oct 15, 2009
as topic states, what do you think the difference in power consumption between 5400rpm and 7200 rpm?
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Mar 3, 2010
I've been following this forum for quite some time after I first got an iPod touch and, recently, an MBP "17.Now, after I did some searches on the internet and couldn't find the answer, Im asking here:My MBP comes with a built-in draft-n wireless card. I bought a draft-n wireless router just for the purpose of utilizing greater wi-fi speeds, but there is one thing I noticed:when I boot MacOS and connect to the wireless network it shows me, tat the transmit rate of the network is 130 (Mbps I presume), on the other hand, when I boot to Windows (via Bootcamp) and connect to the same network - it shows a network speed of 280 Mbps. In both cases the transfer speed are relatively close and go up to 8-9 Megabytes per second.
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Jul 1, 2010
I play a lot of video games on the internet but my connection is not great around 512kbs. I am trying to reduce the sample rate of the microphone from 44k to 22k to use less bandwith when I talk to other players. I always break up when I talk. There is no option to do that in the sound settings. Is there a way to do it? I have a macbook pro 15' 2.5 ghz intel 2 core duo. With 3gb of Ram.
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Jun 16, 2009
Does it hurt the computer... If the computer is doing something (watching flash, playing a game) that turns on the fan full speed;Does this hurt the computer? There are a few games I like to play and they turn on the fan at full speed (computer gets hot too, on the bottom.)
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