Why is my battery life is terrible?

Question

I use my Macbook pro (non-retina, purchased March 2013) for internet browsing (not very much music or video streaming, though), light Microsoft office editing, and some scripting. As I use my Macbook, I can watch the battery-percentage indicator tick down like the minute hand on a clock. From a full charge, my battery lasts 2-4 hours, and it used to last at least 50% more, while running more applications. What is going on? It would be nice to use my portable laptop as a portable laptop.(From etrecheck)Problem description:My battery doesn’t hold charge like it used to. I bought the computer new exactly two years ago. With light use (internet browsing but not streaming, document editing, some scripting), the battery only lasts 2-4 hours from full.EtreCheck version: 2.1.8 (121)Report generated March 2, 2015 at 10:51:14 AM PSTDownload EtreCheck from http://etresoft.com/etrecheckClick 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 Pro (13-inch, Mid 2012) (Technical Specifications)    MacBook Pro - model: MacBookPro9,2    1 2.9 GHz Intel Core i7 CPU: 2-core    8 GB RAM 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:  en1: 802.11 a/b/g/n    Battery Health: Normal - Cycle count 165Video Information: ℹ️    Intel HD Graphics 4000        Color LCD 1280 x 800System Software: ℹ️    OS X 10.10.2 (14C109) - Time since boot: 0:23:33Disk Information: ℹ️    APPLE HDD HTS541075A9E682 disk0 : (750.16 GB)        EFI (disk0s1) &lt;not mounted&gt; : 210 MB         Recovery HD (disk0s3) &lt;not mounted&gt;  [Recovery]: 650 MB         Macintosh HD (disk1) / : 748.93 GB (453.89 GB free)            Core Storage: disk0s2 749.30 GB Online    HL-DT-ST DVDRW  GS31N  USB Information: ℹ️    Apple Inc. FaceTime HD Camera (Built-in)     Apple Inc. BRCM20702 Hub         Apple Inc. Bluetooth USB Host Controller     Apple Computer, Inc. IR Receiver     Apple Inc. Apple Internal Keyboard / Trackpad Thunderbolt Information: ℹ️    Apple Inc. thunderbolt_busConfiguration files: ℹ️    /etc/hosts - Count: 15Gatekeeper: ℹ️    Mac App Store and identified developersKernel Extensions: ℹ️        /System/Library/Extensions    [not loaded]    com.cisco.nke.ipsec (2.0.1) [Click for support]Startup Items: ℹ️    CiscoVPN: Path: /System/Library/StartupItems/CiscoVPN    Startup items are obsolete in OS X YosemiteLaunch Agents: ℹ️    [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]    [loaded]    com.adobe.CS5ServiceManager.plist [Click for support]    [loaded]    com.cisco.anyconnect.gui.plist [Click for support]    [loaded]    com.divx.dms.agent.plist [Click for support]    [loaded]    com.divx.update.agent.plist [Click for support]    [loaded]    com.google.keystone.agent.plist [Click for support]    [loaded]    org.macosforge.xquartz.startx.plist [Click for support]Launch Daemons: ℹ️    [loaded]    com.adobe.fpsaud.plist [Click for support]    [loaded]    com.adobe.SwitchBoard.plist [Click for support]    [running]    com.cisco.anyconnect.vpnagentd.plist [Click for support]    [not loaded]    com.cloudpath.maccmd.plist [Click for support]    [loaded]    com.google.keystone.daemon.plist [Click for support]    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]    [loaded]    org.macosforge.xquartz.privileged_startx.plist [Click for support]User Launch Agents: ℹ️    [loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]    [loaded]    com.adobe.ARM.[...].plist [Click for support]    [failed]    com.apple.FolderActions.enabled.plist [Click for details]User Login Items: ℹ️    AdobeResourceSynchronizer    Application  (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)Internet Plug-ins: ℹ️    o1dbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]    OVSHelper: Version: 1.1 [Click for support]    Default Browser: Version: 600 - SDK 10.10    Flip4Mac WMV Plugin: Version: 2.2.1.11  [Click for support]    AdobePDFViewerNPAPI: Version: 10.1.6 [Click for support]    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]    DivX Web Player: Version: 3.2.4.1250 - SDK 10.6 [Click for support]    Silverlight: Version: 5.1.20913.0 - SDK 10.6 [Click for support]    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]    iPhotoPhotocast: Version: 7.0    googletalkbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]    QuickTime Plugin: Version: 7.7.3    AdobePDFViewer: Version: 10.1.6 [Click for support]    SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version3rd Party Preference Panes: ℹ️    Flash Player  [Click for support]    Flip4Mac WMV  [Click for support]    Growl  [Click for support]Time Machine: ℹ️    Time Machine not configured!Top Processes by CPU: ℹ️        14%    WindowServer         4%    firefox         3%    Dock         2%    hidd         0%    Activity MonitorTop Processes by Memory: ℹ️    567 MB    firefox    103 MB    Microsoft Excel    86 MB    mds_stores    69 MB    WindowServer    43 MB    mdsVirtual Memory Information: ℹ️    5.07 GB    Free RAM    2.02 GB    Active RAM    645 MB    Inactive RAM    852 MB    Wired RAM    1.37 GB    Page-ins    0 B    Page-outsDiagnostics Information: ℹ️    Mar 2, 2015, 10:51:14 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105114_[redacted].crash    Mar 2, 2015, 10:51:04 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105104_[redacted].crash    Mar 2, 2015, 10:50:53 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105053_[redacted].crash    Mar 2, 2015, 10:50:43 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105043_[redacted].crash    Mar 2, 2015, 10:50:32 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105032_[redacted].crash    Mar 2, 2015, 10:50:22 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105022_[redacted].crash    Mar 2, 2015, 10:50:12 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105012_[redacted].crash    Mar 2, 2015, 10:50:01 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-105001_[redacted].crash    Mar 2, 2015, 10:49:55 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104955_[redacted].crash    Mar 2, 2015, 10:49:40 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104940_[redacted].crash    Mar 2, 2015, 10:49:30 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104930_[redacted].crash    Mar 2, 2015, 10:49:22 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104922_[redacted].crash    Mar 2, 2015, 10:49:09 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104909_[redacted].crash    Mar 2, 2015, 10:48:58 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104858_[redacted].crash    Mar 2, 2015, 10:48:48 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104848_[redacted].crash    Mar 2, 2015, 10:48:37 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104837_[redacted].crash    Mar 2, 2015, 10:48:27 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104827_[redacted].crash    Mar 2, 2015, 10:48:17 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104817_[redacted].crash    Mar 2, 2015, 10:48:06 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104806_[redacted].crash    Mar 2, 2015, 10:47:56 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-02-104756_[redacted].crash    Mar 2, 2015, 10:25:45 AM    Self test - passed    Mar 1, 2015, 06:37:38 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183738_[redacted].crash    Mar 1, 2015, 06:37:28 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183728_[redacted].crash    Mar 1, 2015, 06:37:17 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183717_[redacted].crash    Mar 1, 2015, 06:37:07 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183707_[redacted].crash    Mar 1, 2015, 06:36:57 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183657_[redacted].crash    Mar 1, 2015, 06:36:47 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183647_[redacted].crash    Mar 1, 2015, 06:36:36 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183636_[redacted].crash    Mar 1, 2015, 06:36:26 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183626_[redacted].crash    Mar 1, 2015, 06:36:19 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-183619_[redacted].crash    Mar 1, 2015, 06:10:58 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181058_[redacted].crash    Mar 1, 2015, 06:10:48 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181048_[redacted].crash    Mar 1, 2015, 06:10:38 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181038_[redacted].crash    Mar 1, 2015, 06:10:27 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181027_[redacted].crash    Mar 1, 2015, 06:10:17 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181017_[redacted].crash    Mar 1, 2015, 06:10:07 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181007_[redacted].crash    Mar 1, 2015, 06:09:46 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-180946_[redacted].crash    Mar 1, 2015, 06:09:36 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-180936_[redacted].crash    Mar 1, 2015, 06:09:26 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-180926_[redacted].crash    Feb 27, 2015, 09:40:36 PM    /Library/Logs/DiagnosticReports/Folder Actions Setup_2015-02-27-214036_[redacted].hang    Feb 27, 2015, 09:40:05 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/System Events_2015-02-27-214005_[redacted].crash    Feb 27, 2015, 09:39:57 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/System Events_2015-02-27-213957_[redacted].crash    Mar 1, 2015, 06:11:09 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-181109_[redacted].crash    Mar 1, 2015, 06:09:56 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Folder Actions Dispatcher_2015-03-01-180956_[redacted].crash

Linc Davis · Answer

1. Check the cycle count of the battery against the rated life for your model. The battery may be due for replacement. If the power adapter is connected almost all the time, the battery may need replacing even though the cycle count is not too high.2. Follow these instructions, or thesefor OS X 10.8 or earlier.3. In the Energy Saver preference pane, uncheck the box marked          Enable Power Nap while on battery powerif it&#x27;s shown (it may not be.)4. You can also try resetting the SMC.5. Make sure your system is up to date in Software Update.6. Make a "Genius" appointment at an Apple Store, or go to another authorized service center.