Macbook crashes when on battery power

Laterly my macbook, which is uses very often, suddenly crashes every now and then when it's on battery power. Even when it's is (almost) full. It's 18 month's old. With the ac lead in everything is fine. Could there be something wrong with the battery? See below for the battery info from the system profiler (currently the battery is at 30%)
Charge Information:
Charge remaining (mAh): 652
Fully charged: No
Charging: No
Full charge capacity (mAh): 1823
Health Information:
Cycle count: 405
Condition: Poor
Battery Installed: Yes
Amperage (mA): -1193
Voltage (mV): 10973
Any tips or help would be much appreciated.

Welcome to the forums. You should start a new thread with your problems as this indicates a new post needing help. Someone seeing an old post come up may think there is nothing new just a response to an old post. You will have better responses with a new post for your problem instead of tagging it onto an old post.
As to your battery. How often do you do the following? Calibrating a MacBook or MacBook Pro battery
Calibrating your MacBook battery is important and can help prolong the life of your battery.

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    No Exit wrote:
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    Message was edited by: Rod Hagen

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    0x77c93e18 : 0x97d3f5 (0x122d8f80 0x618118 0x6733d80 0x10001)
    0x77c93e48 : 0x416428 (0x122d8f80 0x788de00 0x1 0x3f0838)
    0x77c93ea8 : 0x417ccb (0x788de00 0x122d8f80 0x786cfe0 0x78b13a0)
    Backtrace continues...
    Kernel loadable modules in backtrace (with dependencies):
    com.apple.iokit.IOUSBMassStorageClass(2.0.6)@0x5af3f000->0x5af48fff
    dependency: com.apple.iokit.IOSCSIArchitectureModelFamily(2.0.9)@0x818000
    dependency: com.apple.iokit.IOUSBFamily(3.1.5)@0x5f1000
    dependency: com.apple.iokit.IOStorageFamily(1.5.6)@0x831000
    com.apple.driver.AppleUSBComposite(3.0.0)@0x97c000->0x97ffff
    dependency: com.apple.iokit.IOUSBFamily(3.1.5)@0x5f1000
    com.apple.iokit.IOUSBFamily(3.1.5)@0x5f1000->0x618fff
    BSD process name corresponding to current thread: kernel_task
    Mac OS version:
    9J61
    Kernel version:
    Darwin Kernel Version 9.7.0: Tue Mar 31 22:52:17 PDT 2009; root:xnu-1228.12.14~1/RELEASE_I386
    System model name: MacBook3,1 (Mac-F22788C8)
    System uptime in nanoseconds: 1387872772122
    unloaded kexts:
    com.apple.driver.InternalModemSupport 2.4.0 - last unloaded 171297126583
    loaded kexts:
    com.intego.iokit.VirusBarrierService 10.5.8
    com.intego.kext.AppBarrierKPI 2.1
    com.intego.kext.NetBarrierKPI 10.5.2
    com.apple.iokit.IOUSBMassStorageClass 2.0.6 - last loaded 1387736008957
    com.apple.driver.IOBluetoothSCOAudioDriver 2.1.6f8
    com.apple.iokit.IOBluetoothSerialManager 2.1.6f8
    com.apple.filesystems.autofs 2.0.2
    com.apple.driver.AppleHWSensor 1.9d0
    com.apple.driver.AppleHDA 1.6.8a3
    com.apple.driver.AppleUpstreamUserClient 2.7.5
    com.apple.DontSteal_Mac_OSX 6.0.3
    com.apple.iokit.CHUDUtils 201
    com.apple.iokit.CHUDProf 211
    com.apple.driver.AppleIntelGMAX3100 5.4.4
    com.apple.driver.AppleIntelGMAX3100FB 5.4.4
    com.apple.driver.ACPISMCPlatformPlugin 3.4.0d10
    com.apple.driver.AppleHDAController 1.6.8a3
    com.apple.driver.SMCMotionSensor 2.1.1d2
    com.apple.driver.AppleIRController 110
    com.apple.iokit.IOFireWireIP 1.7.7
    com.apple.driver.AudioIPCDriver 1.0.6
    com.apple.driver.AppleLPC 1.2.12
    com.apple.driver.AppleBacklight 1.6.0
    com.apple.driver.CSRUSBBluetoothHCIController 2.1.6f8
    com.apple.driver.AppleUSBMergeNub 3.0.7
    com.apple.driver.AppleUSBTrackpad 1.7.4f1
    com.apple.driver.AppleUSBTCKeyEventDriver 1.7.4f1
    com.apple.driver.AppleUSBTCKeyboard 1.7.4f1
    com.apple.driver.AppleUSBComposite 3.0.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.0.9
    com.apple.iokit.SCSITaskUserClient 2.0.9
    com.apple.driver.XsanFilter 2.7.91
    com.apple.iokit.IOATAPIProtocolTransport 1.5.2
    com.apple.driver.AirPortBrcm43xx 363.35.0
    com.apple.iokit.IOAHCIBlockStorage 1.2.1
    com.apple.driver.AppleUSBHub 3.1.5
    com.apple.iokit.IOUSBUserClient 3.0.7
    com.apple.driver.AppleFWOHCI 3.8.2
    com.apple.driver.AppleAHCIPort 1.6.0
    com.apple.driver.AppleIntelPIIXATA 2.0.0
    com.apple.iokit.AppleYukon2 3.1.12b14
    com.apple.driver.AppleUSBEHCI 3.1.5
    com.apple.driver.AppleUSBUHCI 3.1.5
    com.apple.driver.AppleEFINVRAM 1.2.0
    com.apple.driver.AppleSmartBatteryManager 158.10.0
    com.apple.driver.AppleRTC 1.2.3
    com.apple.driver.AppleHPET 1.4
    com.apple.driver.AppleACPIPCI 1.2.4
    com.apple.driver.AppleACPIButtons 1.2.4
    com.apple.driver.AppleSMBIOS 1.4
    com.apple.driver.AppleACPIEC 1.2.4
    com.apple.driver.AppleAPIC 1.4
    com.apple.security.seatbelt 107.12
    com.apple.nke.applicationfirewall 1.6.77
    com.apple.security.TMSafetyNet 3
    com.apple.driver.AppleIntelCPUPowerManagement 76.0.0
    com.apple.driver.DiskImages 199
    com.apple.BootCache 30.4
    com.apple.iokit.IOSerialFamily 9.4
    com.apple.driver.DspFuncLib 1.6.8a3
    com.apple.iokit.CHUDKernLib 201
    com.apple.driver.IOPlatformPluginFamily 3.4.0d10
    com.apple.iokit.IOHDAFamily 1.6.8a3
    com.apple.iokit.IOAudioFamily 1.6.9fc3
    com.apple.kext.OSvKernDSPLib 1.1
    com.apple.driver.AppleSMC 2.2.1d2
    com.apple.iokit.IONDRVSupport 1.7.3
    com.apple.iokit.IOGraphicsFamily 1.7.3
    com.apple.driver.AppleUSBBluetoothHCIController 2.1.6f8
    com.apple.iokit.IOBluetoothFamily 2.1.6f8
    com.apple.iokit.IOUSBHIDDriver 3.1.0
    com.apple.iokit.IOSCSIBlockCommandsDevice 2.0.9
    com.apple.iokit.IOBDStorageFamily 1.5
    com.apple.iokit.IODVDStorageFamily 1.5
    com.apple.iokit.IOCDStorageFamily 1.5
    com.apple.iokit.IOSCSIArchitectureModelFamily 2.0.9
    com.apple.iokit.IO80211Family 216.1
    com.apple.iokit.IOFireWireFamily 3.4.7
    com.apple.iokit.IOAHCIFamily 1.5.0
    com.apple.iokit.IOATAFamily 2.0.1
    com.apple.iokit.IONetworkingFamily 1.6.1
    com.apple.iokit.IOUSBFamily 3.1.5
    com.apple.driver.AppleEFIRuntime 1.2.0
    com.apple.iokit.IOSMBusFamily 1.1
    com.apple.iokit.IOStorageFamily 1.5.6
    com.apple.iokit.IOHIDFamily 1.5.5
    com.apple.driver.AppleACPIPlatform 1.2.4
    com.apple.iokit.IOACPIFamily 1.2.0
    com.apple.iokit.IOPCIFamily 2.6

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