MacBook Pro Battery Life Draining After Updating to Yosemite

Hi,
I have a 2011 MacBook Pro. After updating to Yosemite a few months, I have experienced a severe loss of battery life. I was averaging around 6-8 hours on a charge, and that is now down to about 3. I have reset the PRAM, etc. and SOMETIMES that will work but not always. I typically have only one program running at a time, Chrome, but sometimes it's a mix between Chrome, Windows, iTunes. But my computer usage patterns have not changed since before/after updating. The only thing I can think of is that it is caused by Yosemite.
When I check my Activity Monitor, the apps with the highest CPU usage are WindowServer, kernal_task, and Chrome Helper. I have also disabled several plugins/features of Chrome to no avail.
Has anyone experienced similar issues or have any suggestions?
Thanks!

Is one of the 'etc.' a SMC reset?
http://support.apple.com/en-us/HT201295
Ciao.

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panic(cpu 0 caller 0xffffff7f881ad8a1): NVRM[0/1:0:0]: Read Error 0x00003250: CFG 0xffffffff 0xffffffff 0x92000000, BAR0 0x92000000 0xffffff804e3b5000 0x084700a2, D0, P2/4
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0xffffff804e00b590 : 0xffffff8007a1d636
0xffffff804e00b600 : 0xffffff7f881ad8a1
0xffffff804e00b6c0 : 0xffffff7f88512849
0xffffff804e00b700 : 0xffffff7f884f6480
0xffffff804e00b740 : 0xffffff7f884f9567
0xffffff804e00b8a0 : 0xffffff7f88272911
0xffffff804e00ba20 : 0xffffff7f882ffd5a
0xffffff804e00bc60 : 0xffffff7f882fb64d
0xffffff804e00bd70 : 0xffffff7f882ff530
0xffffff804e00bdc0 : 0xffffff7f8856a0eb
0xffffff804e00bdf0 : 0xffffff7f882ff149
0xffffff804e00be70 : 0xffffff7f88192afa
0xffffff804e00bf30 : 0xffffff7f881526ec
0xffffff804e00bf60 : 0xffffff8007a3e26e
0xffffff804e00bfb0 : 0xffffff8007ab3257
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            dependency: com.apple.iokit.IOPCIFamily(2.8)[6C1D646D-7E5E-3D7F-A557-2CBA398FF878]@0xffffff 7f880b2000
            dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f88138000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f880f5000
         com.apple.nvidia.nv50hal(8.1.6)[BF3CC142-4112-3E23-BCE2-CDCFD5811DDA]@0xffffff7 f883fb000->0xffffff7f886cefff
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            dependency: com.apple.iokit.IOPCIFamily(2.8)[6C1D646D-7E5E-3D7F-A557-2CBA398FF878]@0xffffff 7f880b2000
BSD process name corresponding to current thread: kernel_task
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12F45
Kernel version:
Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64
Kernel UUID: EA38B02E-2B88-309F-BA68-1DE29F605DD8
Kernel slide:     0x0000000007800000
Kernel text base: 0xffffff8007a00000
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System uptime in nanoseconds: 79475358847
last loaded kext at 57319258564: com.apple.driver.AudioAUUC          1.60 (addr 0xffffff7f89b42000, size 28672)
loaded kexts:
org.tgwbd.driver.NullCPUPowerManagement          1.0.0d2
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.iokit.IOBluetoothSerialManager          4.1.7f4
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleHDAHardwareConfigDriver          2.4.7fc4
com.apple.driver.AppleTyMCEDriver          1.0.2d2
com.apple.driver.AppleHDA          2.4.7fc4
com.apple.driver.AppleSMCPDRC          1.0.0
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.ApplePolicyControl          3.4.5
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.AppleLPC          1.6.3
com.apple.driver.SMCMotionSensor          3.0.3d1
com.apple.iokit.IOBluetoothUSBDFU          4.1.7f4
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.1.7f4
com.apple.driver.AppleSMCLMU          2.0.3d0
com.apple.driver.AppleSMBusPCI          1.0.11d1
com.apple.GeForce          8.1.6
com.apple.driver.AppleUpstreamUserClient          3.5.12
com.apple.nvidia.NVDAStartup          8.1.6
com.apple.driver.AppleMuxControl          3.4.5
com.apple.driver.AppleBacklight          170.3.5
com.apple.driver.AppleMCCSControl          1.1.11
com.apple.driver.AppleUSBTCButtons          237.1
com.apple.driver.AppleUSBTCKeyEventDriver          237.1
com.apple.driver.AppleUSBTCKeyboard          237.1
com.apple.driver.AppleIRController          320.15
com.apple.driver.AppleFileSystemDriver          3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          34
com.apple.iokit.SCSITaskUserClient          3.5.6
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.3.5
com.apple.driver.AppleUSBHub          635.4.0
com.apple.driver.AirPortBrcm43224          600.36.17
com.apple.iokit.AppleYukon2          3.2.3b1
com.apple.driver.AppleFWOHCI          4.9.9
com.apple.driver.AppleAHCIPort          2.6.6
com.apple.driver.AppleIntelPIIXATA          2.5.1
com.apple.driver.AppleUSBEHCI          621.4.6
com.apple.driver.AppleUSBUHCI          621.4.0
com.apple.driver.AppleSmartBatteryManager          161.0.0
com.apple.driver.AppleRTC          1.5
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleACPIButtons          1.8
com.apple.driver.AppleSMBIOS          1.9
com.apple.driver.AppleACPIEC          1.8
com.apple.driver.AppleAPIC          1.7
com.apple.nke.applicationfirewall          4.0.39
com.apple.security.quarantine          2.1
com.apple.driver.AppleIntelCPUPowerManagement          214.0.0
com.apple.iokit.IOSerialFamily          10.0.6
com.apple.kext.triggers          1.0
com.apple.driver.DspFuncLib          2.4.7fc4
com.apple.iokit.IOAudioFamily          1.9.2fc7
com.apple.kext.OSvKernDSPLib          1.12
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.driver.AppleHDAController          2.4.7fc4
com.apple.iokit.IOHDAFamily          2.4.7fc4
com.apple.iokit.IOSurface          86.0.4
com.apple.iokit.IOBluetoothFamily          4.1.7f4
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.IOPlatformPluginFamily          5.4.1d13
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.1.7f4
com.apple.driver.AppleSMC          3.1.5d4
com.apple.nvidia.nv50hal          8.1.6
com.apple.NVDAResman          8.1.6
com.apple.driver.AppleGraphicsControl          3.4.5
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.iokit.IONDRVSupport          2.3.7
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.iokit.IOGraphicsFamily          2.3.7
com.apple.driver.AppleUSBMultitouch          237.3
com.apple.iokit.IOUSBHIDDriver          623.4.0
com.apple.driver.AppleUSBMergeNub          621.4.6
com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.6
com.apple.iokit.IOUSBMassStorageClass          3.5.2
com.apple.driver.AppleUSBComposite          621.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.5.6
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.iokit.IOATAPIProtocolTransport          3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.6
com.apple.iokit.IOUSBUserClient          630.4.4
com.apple.iokit.IO80211Family          530.5
com.apple.driver.AppleEFINVRAM          2.0
com.apple.iokit.IONetworkingFamily          3.0
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOAHCIFamily          2.5.1
com.apple.iokit.IOATAFamily          2.5.1
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IOUSBFamily          635.4.0
com.apple.iokit.IOHIDFamily          1.8.1
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          220.3
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.DiskImages          345
com.apple.iokit.IOStorageFamily          1.8
com.apple.driver.AppleKeyStore          28.21
com.apple.driver.AppleACPIPlatform          1.8
com.apple.iokit.IOPCIFamily          2.8
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0
I received the macbook from someone else without installation disks. Also, when try to do a re-install of 10.8.3 from the internet in restore mode, it tells me that the account does not match the one the purchase was made from. I would rather not run 10.8.3 anyway if I could install mavericks.
Below is the system information for the macbook
Hardware Overview:
Model Name:          MacBook Pro
Model Identifier:          MacBookPro3,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.4 GHz
Number of Processors:          1
Total Number of Cores:          2
L2 Cache:          4 MB
Memory:          2 GB
Bus Speed:          800 MHz
Boot ROM Version:          MBP31.0070.B07
SMC Version (system):          1.16f11
Serial Number (system):          W87422HUYAM
Hardware UUID:          00000000-0000-1000-8000-001B63A5B553
I have tried to reset nvram as well as smc with no result.
I have also done a extended apple hardware test which found no errors.
The macbook does have a bad battery, so I have tried booting without the battery. The results did not change.
I have searched the internet for the kernel panic error and can not find a consistent issue for macbook pros. Some say it is a hardware problem. Others say it is an install problem. What does not make sense to me is if it is hardware problem, why was I able to restore it back once and get it to boot consistently. It seems to be directly the result of updating the software.
I also read that 10.8.5 consistently had boot problems upon install, so I tried re-installing the combo update for 10.8.5
I feel like I have exhausted almost all the resources except taking it to the genius bar.
Please let me know if you can help.
Thanks,

bereanmh,
since your MacBook Pro didn’t originally have Mountain Lion installed at the factory, the former owner erred in leaving it on its internal disk when transferring it to you; Mountain Lion is non-transferable when sourced from the Mac App Store. The former owner should rather have provided you with its original pair of grey installation discs, which hold its original version of Mac OS X, its iLife apps, and its model-specific Apple Hardware Test. If you didn’t receive these discs, you can contact Apple directly to purchase a replacement pair. (They’re not available in Apple stores.)
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