Is it just me? Or old MacBooks had better battery life?

Is it just me, or is the battery life on the new uMacBooks drains faster than the old models (Black)?
I just picked up a new MacBook to replace my old black MacBook and I literally notice the battery life percentage go down one point about every two minutes. My black MacBook performed WAY better than this. I can't believe a new model would be worse than an old one. Did I happen to get a faulty one? Has anyone noticed the same? Please advise.

There's nothing wrong with your new MacBook. I can definitely say that my alumMacBook gives me about an hour less of battery life compared to my White MacBook. I agree, it stink.

Similar Messages

Just bought a mid 2012 13 in macbook pro. Battery life is only 3 hours. Thoughts?

Just bought a mid 2012 13 in macbook pro. Battery life is only 3 hours. I was under the impression that it would last 7 hours. This is with normal internet browsing and text editing. my brightness is not all the up and bluetooth is off. Thoughts?

im having the same problems, bought my 13" MacBook Pro last week and the battery is terrible on it, but i googled it and a lot of other people are having the same issues

Why doesn't the Macbook Pro's battery life last?

Why doesn't the Macbook Pro's battery life last anywhere near 5 hours, as advertised? This is my second one and it lasts 2. It's false advertising, and Apple doesn't seem to making a big deal or know anything about it, which i'm sure they do. Since their general practice is to deny problems exist in all their products, i'm here to make it known that the most recent Macbook Pro has a severe battery issue and it needs to be addressed.
I'm running OS X 10.8.3, Bluetooth is off, and haven't installed any third party software.

My MacBook Pro is over a year old and still gets 2.5 to 5 hours, depending on how intensively my application activity is hitting the CPU and disk. Remember that battery life depends on usage and component loads. You could get 1 hour editing HD video since it would hit all cores and slam the disk constantly, or 8 hours in a cabin in the woods with wifi and Bluetooth turned off, only writing text files, and with the backlight turned down and no disc in the drive. You should check Activity Monitor to make sure you don't have some processes using unusually high amounts of CPU for long periods of time (like browser tabs running Flash ads in the background, chewing up CPU and battery power without even being seen).
Like mende1 says, there are not huge numbers of Mac users getting only 2 hours, or the world would have heard about it by now and MacBook sales would be down. If you are only getting 2 hours there is something going on local to your machine or usage habits.
Terry Mele wrote:
Since their general practice is to deny problems exist in all their products
That's not strictly true. Apple has often announced updates or repair/exchange programs to address various problems that had come up over time. Maybe not always, but it does happen. They also have often helped me and my friends when we brought in Macs that were out of warranty and had problems. They had no legal obligation to work on our Macs for free, but they did anyway.

My phone went blank. It still had 41% battery life. I have tried to reset by holding down the sleep button and botton on top until the Apple Icon appears but then after that, nothing. Any ideas?

I had just checked my phone and it had 41% battery life left. A few minutes later, it simply went blank and won't do anything. I tried reseting it by pushing down on the wake/sleep button and the button on top until the Apple logo appeared, but that didn't help. Any ideas?

Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem, make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

My iPad 2 is only 7 months old and is draining battery life quickly some days and others shutting off at 40% - 50% and when I turn the iPad back on it keeps turning it self off continuously. I have a feeling the battery could be faulty, what do I do?

My iPad 2 is only 7 months old and is draining battery life quickly some days and others shutting off at 40% - 50% and when I turn the iPad back on it keeps turning it self off continuously. I have a feeling the battery could be faulty, what do I do?

The Basic Troubleshooting Steps are:
Restart... Reset... Restore from Backup... Restore as New...
Restart / Reset
http://support.apple.com/kb/ht1430
Backing up, Updating and Restoring
http://support.apple.com/kb/HT1414
If you try all these Steps and you still have issues... Then a Visit to an Apple Store or AASP (Authorized Apple Service Provider) is the Next Step...
Be sure to make an appointment first...

Late 2008 MacBook Pro automatically switches back to "Better battery life"

Lately I've been using my mac for a little gaming (now that there's Steam and Starcraft 2), so I've been using the "Higher performance setting" in the Energy Saver preference pane.
But every once in a while I notice my games have automatically set me settings down. And sure enough, when I check, the setting has reverted to "Better battery life."
I know I'm not setting it back there. Anyone know why it would be reset?
My intuition tells me it has something to do with user switching. I use 2 accounts (1 for work and 1 for home) and will Fast User Switch between the 2 of them.
Any help is appreciated.

If you turn off IR (security prefs), turn off the keyboard backlight, and keep the screen backlight down you may be able to increase it a bit. Turning off wireless when not in use will of course increase it tremendously.
But if you have calibrated your battery it sounds about right. Just monitor your battery health with iStat Pro or Apple System Profiler.

My four-month-old macbook pro's battery when fully charged is now down to 2 hours life from 7...in the last week. Why?

I bought my macbook pro 13" about four months ago and have been in love with it ever since - especially as compared to my old PC laptop, the battery stays cool and lasts forever when I am working. Best charge was 7 hours. However, in the last week I have noticed the battery suddenly becoming hot when I unplug the charger, and the best length of time I can get on a full charge is 2 hours.
I have made sure all the settings are for prolonged battery life - which they've been since I first set up - and turned off all programmes running in the background, but this has not made any difference. I have been using iMovie a lot lately which takes a lot of battery which is probably why I didn't notice the battery being low as it automatically seems to make the battery slump to 2 hours when it's on. It's off now, and my battery won't improve.
I have also now followed the instructions (below) about calibrating, but this has had no effect. My housemate bought the same model a month ahead of me, uses it probably slightly less, but his is still 7 hours for a charge.
Is my battery faulty?
Calibration instructions used:
PowerBook G4 (15-inchDouble-Layer SD), MacBook (all models), MacBook Pro (all models), and MacBookPro (17-inch) (all models)
Thebattery calibration for the PowerBook G4 (15-inch Double-Layer SD) and anymodel of MacBook or MacBook Pro has been updated because of a new batteryreleased with this computer. With these computers, follow these steps tocalibrate your battery:
Plug in the power adapter and     fully charge your PowerBook's battery until the light ring or LED on the     power adapter plug changes to green and the onscreen meter in the menu bar     indicates that the battery is fully charged.
Allow the battery to rest in the     fully charged state for at least two hours. You may use your computer     during this time as long as the adapter is plugged in.
Disconnect the power adapter while     the computer still on and start running the computer off battery power.     You may use your computer during this time. When your battery gets low,     the low battery warning dialog appears on the screen.
At this point, save your     work. Continue to use your computer; when the battery gets very low,     the computer will automatically go to sleep.
Turn off the computer or allow it     to sleep for five hours or more.
Connect the power adapter and     leave it connected until the battery is fully charged again.
Tip:When the battery reaches "empty", the computer is forced into sleepmode. The battery actually keeps back a reserve beyond "empty", tomaintain the computer in sleep for a period of time. Once the battery is trulyexhausted, the computer is forced to shut down. At this point, with the safesleep function introduced in the PowerBook G4 (15-inch Double-Layer SD)computers, the computer's memory contents have been saved to the hard drive.When power is restored, the computer returns itself to its pre-sleep stateusing the safe sleep image on the hard drive.

Thanks Sig. The information is here: Anything useful stand out?
Battery Information:
Model Information:
Serial Number:    9G1130CJVD3MA
Manufacturer:    DP
Device Name:    bq20z451
Pack Lot Code:    0000
PCB Lot Code:    0000
Firmware Version:    0201
Hardware Revision:    0002
Cell Revision:    0158
Charge Information:
Charge Remaining (mAh):    5663
Fully Charged:    Yes
Charging:    No
Full Charge Capacity (mAh):    5663
Health Information:
Cycle Count:    59
Condition:    Normal
Battery Installed:    Yes
Amperage (mA):    261
Voltage (mV):    12574
System Power Settings:
AC Power:
System Sleep Timer (Minutes):    10
Disk Sleep Timer (Minutes):    10
Display Sleep Timer (Minutes):    10
Wake on AC Change:    No
Wake on Clamshell Open:    Yes
Wake on LAN:    Yes
Current Power Source:    Yes
Display Sleep Uses Dim:    Yes
Battery Power:
System Sleep Timer (Minutes):    10
Disk Sleep Timer (Minutes):    10
Display Sleep Timer (Minutes):    2
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
ID:    0x0100
Wattage (W):    60
Revision:    0x0000
Family:    0x00ba
Serial Number:    0x00262704
Charging:    No

Macbook Air Poor Battery Life

I have a mid-2012 Macbook air and I've noticed recently my battery life is horrible. I've read every single other thread about this issue but nothing really helped and even the most recent is from a couple of years ago. Obviously now it's 2015 and my macbook is running on Yosemite, so its not the battery issue that everyone seemed to have with Mavericks.
Just writing that small section I went from 73% to 68% and at the current 68% I only get an estimated 2 hours and 10 minutes remaining. I've also had only Safari running this whole time.
Option clicking the battery icon reveals that the condition is normal, as well as the power system report. It also has gone through only 441 cycles, no where near its 1000 cycle "limit" and its health is already down to 77%. While obviously the condition is normal and doesn't say I need to replace the battery I feel that I should, based off of everything else.

Have macbook air from mid 2012 - I installed Yosemite November 2014 and since then I'm having problem with my battery - it has been draining super fast - 4hrs battery life now compared to earlier 8hrs.
I reinstalled Yosemite, didn’t help and then made a clean reinstallation of Yosemite about 5 days ago and there is still the same drain issue.
Thank you in advance!
Here is the Etre Check Report:
Problem description:
The battery has been draining super fast - 4hrs battery life now compared to earlier 8hrs.
EtreCheck version: 2.2 (132)
Report generated 5/2/15, 8:02 PM
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    MacBook Air (13-inch, Mid 2012) (Technical Specifications)
    MacBook Air - model: MacBookAir5,2
    1 1.8 GHz Intel Core i5 CPU: 2-core
    8 GB RAM Not upgradeable
        BANK 0/DIMM0
            4 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            4 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en0: 802.11 a/b/g/n
    Battery: Health = Normal - Cycle count = 341 - SN = D8622840AXXDKRNAA
Video Information: ℹ️
    Intel HD Graphics 4000
        Color LCD 1440 x 900
System Software: ℹ️
    OS X 10.10.3 (14D136) - Time since boot: 10:53:27
Disk Information: ℹ️
    APPLE SSD TS128E disk0 : (121.33 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / : 120.11 GB (105.35 GB free)
            Encrypted AES-XTS Unlocked
            Core Storage: disk0s2 120.47 GB Online
USB Information: ℹ️
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Internal Memory Card Reader
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Problem System Launch Daemons: ℹ️
    [failed]    com.apple.mtrecorder.plist
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [failed]    com.apple.spirecorder.plist
User Login Items: ℹ️
    iTunesHelper    Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins: ℹ️
    FlashPlayer-10.6: Version: 17.0.0.169 - SDK 10.6 [Click for support]
    Flash Player: Version: 17.0.0.169 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    Default Browser: Version: 600 - SDK 10.10
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
         6%    WindowServer
         4%    fontd
         3%    hidd
         1%    configd
         1%    powerd
Top Processes by Memory: ℹ️
    519 MB    kernel_task
    156 MB    com.apple.WebKit.WebContent
    66 MB    Safari
    57 MB    mdworker(7)
    57 MB    Pages
Virtual Memory Information: ℹ️
    5.28 GB    Free RAM
    2.72 GB    Used RAM
    72 MB    Swap Used

Macbook Air Terrible Battery Life

There are a series of threads on these forums regarding the rare case where Macbook Airs get terrible battery life on Mavericks, and some of them have numerous posts telling you to make a new thread about your specific issue. Here's mine.
The issues began when I did my initial Mavericks update. I had a series of really bad things happen, so I did a cmd+R reboot, and reinstalled the OS. It didn't help, so I scheduled a Genius appointment, and they wiped the drive and installed Mavericks clean.
All of the issues are gone now, except for one: my computer gets less than half the life it did on Mountain Lion. I used to get 14-16 hours of battery life on Mountain Lion when nothing was running. I just charged it to 100% and had just 6 hours of estimated life.
I've reset both the PRAM and the SMC, and neither helped. Might you have any further ideas on how to fix this?
Note: I know that Google Chrome is less energy efficient than other browsers. With that said, I used to still get well over 10 hours at 98-100% battery life on Mountain Lion with Chrome open. My usage of Google Chrome is a constant in this equation; this issue can't be so easily dismissed as being an issue with Chrome, I think.
Here's a screenshot showing a number of things (no apps being open, the poor battery life, and activity monitor)
http://jmeas.com/files/mavericks.png
And here's an EtreCheck report:
Hardware Information:
          MacBook Air (13-inch, Mid 2013)
          MacBook Air - model: MacBookAir6,2
          1 1.7 GHz Intel Core i7 CPU: 2 cores
          8 GB RAM
Video Information:
          Intel HD Graphics 5000 - VRAM: 1024 MB
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0
          AirPlay: Version: 1.9
          AppleAVBAudio: Version: 2.0.0
          iSightAudio: Version: 7.7.3
System Software:
          OS X 10.9 (13A603) - Uptime: 0 days 1:26:34
Disk Information:
          APPLE SSD SM0512F disk0 : (500.28 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) /: 499.42 GB (317.08 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
USB Information:
          Apple Internal Memory Card Reader
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
FireWire Information:
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Kernel Extensions:
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist
          [loaded] com.cocoatech.pathfinder.SMFHelper7.plist
          [loaded] com.google.keystone.daemon.plist
          [loaded] com.macpaw.CleanMyMac2.Agent.plist
          [not loaded] com.maintain.HideSpotlightMenuBarIcon.plist
          [loaded] com.microsoft.office.licensing.helper.plist
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist
          [loaded] com.adobe.AdobeCreativeCloud.plist
          [loaded] com.google.keystone.agent.plist
          [not loaded] com.maintain.PurgeInactiveMemory.plist
          [loaded] com.maintain.SystemEvents.plist
          [loaded] com.wacom.wacomtablet.plist
User Launch Agents:
          [loaded] com.adobe.AAM.Updater-1.0.plist
          [loaded] com.adobe.ARM.[...].plist
          [loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist
          [loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist
          [loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist
          [loaded] com.spotify.webhelper.plist
User Login Items:
          Flux
          iTunesHelper
          PopClip
          Moom
          Fantastical
          XtraFinder
          Jitouch
3rd Party Preference Panes:
          AirServer Preferences
          Flash Player
          Jitouch
          TeXDistPrefPane
          WacomTablet
Internet Plug-ins:
          AdobeAAMDetect.plugin
          AdobePDFViewer.plugin
          AdobePDFViewerNPAPI.plugin
          Default Browser.plugin
          Flash Player.plugin
          FlashPlayer-10.6.plugin
          googletalkbrowserplugin.plugin
          npgtpo3dautoplugin.plugin
          o1dbrowserplugin.plugin
          QuickTime Plugin.plugin
          SharePointBrowserPlugin.plugin
          Silverlight.plugin
          WacomNetscape.plugin
          WacomTabletPlugin.plugin
User Internet Plug-ins:
Bad Fonts:
          None
Time Machine:
          Skip System Files: NO
          Mobile backups: ON
          Auto backup: YES
          Volumes being backed up:
          Destinations:
                    Data [Network] (Last used)
                    Total size: 2 TB
                    Total number of backups: 16
                    Oldest backup: 2013-10-14 09:52:54 +0000
                    Last backup: 2013-10-27 15:27:27 +0000
                    Size of backup disk: Excellent
                              Backup size 2 TB > (Disk size Zero KB X 3)
Top Processes by CPU:
               3%          WindowServer
               3%          Google Chrome
               1%          EtreCheck
               1%          fontd
               1%          PopClip
               0%          Moom
               0%          Jitouch
               0%          hidd
               0%          Last.fm Scrobbler
               0%          locationd
Top Processes by Memory:
          164 MB             com.apple.IconServicesAgent
          147 MB             Google Chrome
          98 MB              WindowServer
          90 MB              Finder
          57 MB              Last.fm Scrobbler
          57 MB              mds_stores
          52 MB              Google Chrome Helper
          49 MB              Dock
          41 MB              mds
          41 MB              Fantastical
Virtual Memory Statistics:
          2.67 GB            Free RAM
          2.66 GB            Active RAM
          1.77 GB            Inactive RAM
          918 MB             Wired RAM
          1.05 GB            Page-ins
          0 B                Page-outs

This may be because Spotlight is indexing your harddrive, do not interrupt it before it's finished and then it'll be much faster and your battery while behave normally if not better !

MacBook Pro 15" Battery Life Issue

I have a MacBook Pro 15", with a processor 2.4 GHz Intel Core i7 and memory 4 GB 1333 Mhz DDR3 running OS X 10.7.2. It was purchased only a week ago and I'm noticing horrible battery issues. I have checked Activity Monitor and nothing, even while I'm browsing the Internet is using a large amount of CPU, so I'm a bit confused. I know that this is an issue that many people are facing as I can see from all the other discussions. Has anybody found a solution to this issue at this point, or has Apple released any information about an update ot fix the issue, anything at all? Just pretty disappointed since I came from an early 2008 MacBook Pro which had about a 4 hour battery life and was expecting a new Mac with 7 hours at least. Thanks everyone for the help, sorry for a question that I'm sure every is sick of.

Calibrating the battery is a slightly more specific process than Chris suggests. Instructions are here:
http://support.apple.com/kb/HT1490
It's important to follow them to the letter, paying attention to the specified wait times after charging and discharging.

2013 Macbook Air 13" battery life not as good as advertised

At full charge, the estimated battery life read a little over 17 hours. At 97%, it now reads 15:39. Like I get this is vastly better than the older Macbook Air, but it still falls quite short of the 24 hours advertised on the website. Currently, it is still at 97% but now the estimated battery running time reads 14:59. Is this normal? I accidentally drained my battery twice since I bought it at the beginning of August, and I understand that's not good for the newer batteries - could this be the reason? My screen brightness is at 50% and I have no movies or music playing. Safari is the only ap I have open.
I'd appreciate any ideas or help with this problem (that is, if it is one).
I just looked at the estimated time again, and while it is still at 97%, the estimated remaining time is at 13:48. It's taken me a little over a minute to type this.
I'm not very tech-savy - is there something wrong with the way I understood the advertised battery life?

The Air is nowhere advertised for 24 hrs. batt. life......... in any configuration.

My Macbook Air 2013 battery life is sub 4 hours. How do I diagnose and resolve the issue?

Hi,
I have a 6 month old Macbook AIr 2013 and I am getting sub 4 hours of battery life against the 12 hrs advertised. I looked into the application monitor and found that Spotlight has been causing my battery to drain
Here is a brief snapshot of System information
Hardware Overview:
Model Name:          MacBook Air
Model Identifier:          MacBookAir6,2
Processor Name:          Intel Core i5
Processor Speed:          1.3 GHz
Number of Processors:          1
Total Number of Cores:          2
L2 Cache (per Core):          256 KB
L3 Cache:          3 MB
Memory:          4 GB
Boot ROM Version:          MBA61.0099.B07
SMC Version (system):          2.13f7
Battery Information:
Model Information:
Serial Number:          D86349701E7F90KAV
Manufacturer:          SMP
Device Name:          bq20z451
Pack Lot Code:          0
PCB Lot Code:          0
Firmware Version:          511
Hardware Revision:          000a
Cell Revision:          1200
Charge Information:
Charge Remaining (mAh):          6362
Fully Charged:          No
Charging:          No
Full Charge Capacity (mAh):          7023
Health Information:
Cycle Count:          16
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          -1727
Voltage (mV):          8266
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          1
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          10
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Wake on LAN:          Yes
AutoPowerOff Delay:          14400
AutoPowerOff Enabled:          1
DarkWakeBackgroundTasks:          1
Display Sleep Uses Dim:          Yes
PrioritizeNetworkReachabilityOverSleep:          0
Standby Delay:          10800
Standby Enabled:          1
Battery Power:
System Sleep Timer (Minutes):          1
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          2
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
AutoPowerOff Delay:          14400
AutoPowerOff Enabled:          1
Current Power Source:          Yes
DarkWakeBackgroundTasks:          0
Display Sleep Uses Dim:          Yes
Reduce Brightness:          Yes
Standby Delay:          10800
Standby Enabled:          1
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          No
Charging:          No
Can somebody please advise me on what exactly is wrong and what I need to do to resolve the issue. Much appreciate the help.
Thanks
Nitin

1. Follow these instructions, or these for OS X 10.9 or later.
2. In the Energy Saver preference pane, uncheck the box marked
Enable Power Nap while on battery power
3. You can also try resetting the SMC.
4. Make sure your system is up to date in Software Update.
5. Make a "Genius" appointment at an Apple Store, or go to another authorized service center.

Macbook Pro Retina battery life fix

My machine came with Mountain Lion 10.8.2 a few weeks ago. When battery was charged to 100%, I had about 2,5 hours of battery time remaining (as showed when clicking the battery icon on top of the screen). I did the procedure below and now I have between 5 and 7 hours. I'm yet to test the real life battery time.
Another user wrote that the problem is said to be created by a corrupt file created by Migration Assistant and that the file needed to be removed through the procedure below. Interestingly enough, I didn’t use Migration Assistant when setting up my machine (I think I opened Migration Assistant at one point just to check it out, but I didn’t use it to transfer any files or settings). Also, after doing the procedure, the file was still there, however with today’s date. Nevertheless it seems to have worked very well for me, so it may be a good idea to try the procedure even if you have never used Migration Assistant.
Before doing the procedure, I took a copy of the file in case I later would regret deleting it and want to restore it. Open Finder. While holding down the Alt key click on the Go menu and select Library (if you don’t hold down the Alt key, Library won’t show on the menu). From the Library folder, open the Preferences folder. Then copy (but in my opinion don’t remove) the file com.apple.desktop.plist to another place that you can remember. It might be a good idea not to delete this file directly from Finder, since after I had completed the procedure, the file was still to be found in the Preferences folder (with today’s date).
The procedure:
In this procedure, leave out all quote marks “ “
Open Terminal (by going to the Applications folder and from there the Utilities folder and from there opening Terminal).
On the keyboard type “cd ~/Library/Preferences/” and hit Enter.
Now type “rm com.apple.desktop.plist” and hit Enter again.
Finally, type “killall Dock” and hit Enter.
After doing this I restarted my machine and let the battery go down to 0 % in order to then charge it up to 100 %.
Kristoffer

Did this work for you?
Why do all the reviews out there (MacWorld, Engadget, etc.) claim they have 7 hours and we all end up with 2-4 hours. I think all the media is focused on selling products for Apple and do no really do any testing of their own.
Shame that even the guy who sold me this laptop 4 days ago claimed that I should get 6-7 hours of battery life and all I have seen so far is 2 maybe 3 hours at most.

Is customizing macbook affects its battery life?

Hey guys! I am wondering if I will buy a customized MacBook, for example, a MacBook Pro 13" Retina upgraded processor from core i5 to core i7 and memory from 8GB to 16GB, will it affect the battery life of the macbook, say from 9 hours of battery life, it will become lesser because of the added processor power.? Just asking.

Battery Information:
Model Information:
Serial Number: W03264H15D3LC
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 201
Hardware Revision: 000a
Cell Revision: 165
Charge Information:
Charge Remaining (mAh): 5048
Fully Charged: Yes
Charging: No
Full Charge Capacity (mAh): 5048
Health Information:
Cycle Count: 157
Condition: Normal
Battery Installed: Yes
Amperage (mA): 264
Voltage (mV): 12594

Improving the 2013 Macbook Air i7 battery life

Hi
I've checked couple of topics related to this issue seems many people suffer from this problem, i7 8gb ram with 512gb ssd Macbook air has some issues with its battery life it reduced very quickly. I've applied some techniques -like smc reset,deleting launch daemons and agents- and have an improvement in battery performance. Now the point is, when i do the EtreCheck there are many kernel extensions displayed in the report. Is there any way to delete them and slightly improve the battery life?
Here is the output:
Hardware Information:
          MacBook Air (13-inch, Mid 2013)
          MacBook Air - model: MacBookAir6,2
          1 1.7 GHz Intel Core i7 CPU: 2 cores
          8 GB RAM
Video Information:
          Intel HD Graphics 5000 - VRAM: (null)
System Software:
          OS X 10.9.3 (13D65) - Uptime: 0 days 13:15:5
Disk Information:
          APPLE SSD SM0512F disk0 : (500,28 GB)
                    EFI (disk0s1) <not mounted>: 209,7 MB
                    Macintosh HD (disk0s2) / [Startup]: 499,42 GB (372,12 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
USB Information:
          Apple Internal Memory Card Reader
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Gatekeeper:
          Mac App Store and identified developers
Kernel Extensions:
          [not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.13) Support
          [not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.13) Support
          [not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.35) Support
          [not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.35) Support
          [not loaded] com.nike.sportwatch (1.0.0) Support
          [not loaded] com.novamedia.driver.IceraUSB_MSD_Bypass (1.3.0) Support
          [not loaded] com.novatelwireless.driver.3G (3.0.13) Support
          [not loaded] com.novatelwireless.driver.3GData (3.0.13) Support
          [not loaded] com.novatelwireless.driver.DisableAutoInstall (3.0.13) Support
          [not loaded] com.option.driver.Option72 (2.15.0) Support
          [not loaded] com.option.driver.OptionHS (3.26.0) Support
          [not loaded] com.option.driver.OptionMSD (1.21.0) Support
          [not loaded] com.option.driver.OptionQC (1.11.0) Support
          [kext loaded] com.rim.driver.BlackBerryUSBDriverInt (0.0.67) Support
          [not loaded] com.rim.driver.BlackBerryUSBDriverVSP (0.0.67) Support
          [not loaded] com.vodafone.driver (3.0.9) Support
          [not loaded] com.vodafone.driver.Data (3.0.9) Support
          [not loaded] com.zte.driver.cdc_ecm_qmi (1.0.26) Support
          [not loaded] com.zte.driver.cdc_usb_bus (1.0.26) Support
          [not loaded] de.novamedia.driver.NMSamsung (0.0.2) Support
          [not loaded] de.novamedia.driver.NMSmartplugSCSIDevice (1.0.1) Support
          [not loaded] de.novamedia.driver.NMUSBCDCACMControl (3.2.12) Support
          [not loaded] de.novamedia.driver.NMUSBCDCACMData (3.2.12) Support
          [not loaded] de.novamedia.oem.vodafone.vtp.huawei.cdc (0.0.2) Support
Problem System Launch Daemons:
          [running] de.novamedia.nmnetmgrd.plist Support
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist Support
          [loaded] com.microsoft.office.licensing.helper.plist Support
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist Support
          [loaded] com.google.keystone.agent.plist Support
User Launch Agents:
          [loaded] com.valvesoftware.steamclean.plist Support
User Login Items:
          None
Internet Plug-ins:
          FlashPlayer-10.6: Version: 13.0.0.214 - SDK 10.6 Support
          QuickTime Plugin: Version: 7.7.3
          Flash Player: Version: 13.0.0.214 - SDK 10.6 Support
          Default Browser: Version: 537 - SDK 10.9
          o1dbrowserplugin: Version: 5.4.1.18709 Support
          SharePointBrowserPlugin: Version: 14.4.1 - SDK 10.6 Support
          googletalkbrowserplugin: Version: 5.4.1.18709 Support
          JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version
Safari Extensions:
          Open in Internet Explorer: Version: 1.0
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 2.0 - SDK 10.9
          AppleAVBAudio: Version: 203.2 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User Internet Plug-ins:
          OctoshapeWeb: Version: 1.0 - SDK 10.8 Support
3rd Party Preference Panes:
          Flash Player Support
          MusicManager Support
          Xmarks for Safari Support
Time Machine:
          Skip System Files: NO
          Auto backup: YES
          Volumes being backed up:
          Destinations:
                    My Passport Air [Local] (Last used)
                    Total size: 465.41 GB
                    Total number of backups: 1
                    Oldest backup: 2014-02-20 22:28:07 +0000
                    Last backup: 2014-02-20 22:28:07 +0000
                    Size of backup disk: Excellent
                              Backup size 465.41 GB > (Disk size 0 B X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
               3%          WindowServer
               1%          hidd
               1%          mds_stores
               0%          fontd
               0%          warmd
Top Processes by Memory:
          82 MB          Google Chrome
          52 MB          Google Chrome Helper
          49 MB          mds_stores
          41 MB          Calendar
          33 MB          WindowServer
Virtual Memory Information:
          6.03 GB          Free RAM
          998 MB          Active RAM
          97 MB          Inactive RAM
          633 MB          Wired RAM
          522 MB          Page-ins
          0 B          Page-outs
Is there any other suggestions that you may offer ? Many thanks

You can use the new Activity Monitor to determine a unitless "Energy Impact" value:
You can also click the battery icon in your Mac's menu to reveal significant energy hogs (UPS is shown below):
Whereas Apple recently updated their apps to take advantage of Mavericks' energy saving algorithms, few other vendors have. I surmise the prominent "Energy Impact" hall of shame addition to the new Activity Monitor is Apple's subtle way of nudging them into compliance.
Google's plethora of invasive OS X system modifications is a popular reason for excessive battery drain. Google has yet to demonstrate the ability to develop efficient OS X apps, and one can only surmise they are not interested in doing so. If you elect to use Google Chrome or any other poorly implemented OS X programs, you must accept the detrimental effect they will have on performance and battery life.
If you no longer use a Blackberry, uninstall RIM's software. Be sure to follow its uninstallation instructions.

Is it just me? Or old MacBooks had better battery life?

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