Win32_Battery class

The Win32_Battery WMI class represents a battery connected to the computer system.

The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties are listed in alphabetic order, not MOF order.

Syntax

[Dynamic, Provider("CIMWin32"), UUID("{8502C4B9-5FBB-11D2-AAC1-006008C78BC7}"), AMENDMENT]
class Win32_Battery : CIM_Battery
{
  uint16   Availability;
  uint32   BatteryRechargeTime;
  uint16   BatteryStatus;
  string   Caption;
  uint16   Chemistry;
  uint32   ConfigManagerErrorCode;
  boolean  ConfigManagerUserConfig;
  string   CreationClassName;
  string   Description;
  uint32   DesignCapacity;
  uint64   DesignVoltage;
  string   DeviceID;
  boolean  ErrorCleared;
  string   ErrorDescription;
  uint16   EstimatedChargeRemaining;
  uint32   EstimatedRunTime;
  uint32   ExpectedBatteryLife;
  uint32   ExpectedLife;
  uint32   FullChargeCapacity;
  datetime InstallDate;
  uint32   LastErrorCode;
  uint32   MaxRechargeTime;
  string   Name;
  string   PNPDeviceID;
  uint16   PowerManagementCapabilities[];
  boolean  PowerManagementSupported;
  string   SmartBatteryVersion;
  string   Status;
  uint16   StatusInfo;
  string   SystemCreationClassName;
  string   SystemName;
  uint32   TimeOnBattery;
  uint32   TimeToFullCharge;
};

Members

The Win32_Battery class has these types of members:

Methods

The Win32_Battery class has these methods.

Method Description
Reset Not implemented. To implement this method, see the Reset method in CIM_Battery for documentation.
SetPowerState Not implemented. To implement this method, see the SetPowerState method in CIM_Battery for documentation.

Properties

The Win32_Battery class has these properties.

Availability

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Operational State|003.5", "MIB.IETF|HOST-RESOURCES-MIB.hrDeviceStatus")

Availability and status of the device.

This property is inherited from CIM_LogicalDevice.

Other (1)

Unknown (2)

Running/Full Power (3)

Running or Full Power

Warning (4)

In Test (5)

Not Applicable (6)

Power Off (7)

Off Line (8)

Off Duty (9)

Degraded (10)

Not Installed (11)

Install Error (12)

Power Save - Unknown (13)

The device is known to be in a power save mode, but its exact status is unknown.

Power Save - Low Power Mode (14)

The device is in a power save state but still functioning, and may exhibit degraded performance.

Power Save - Standby (15)

The device is not functioning, but could be brought to full power quickly.

Power Cycle (16)

Power Save - Warning (17)

The device is in a warning state, though also in a power save mode.

Paused (18)

The device is paused.

Not Ready (19)

The device is not ready.

Not Configured (20)

The device is not configured.

Quiesced (21)

The device is quiet.

BatteryRechargeTime

Data type: uint32

Access type: Read-only

Qualifiers: DEPRECATED, MappingStrings ("HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services|RechargeRate"), Units ("minutes")

Time required to fully charge the battery. This property is not supported. BatteryRechargeTime does not have a replacement property, and is now considered obsolete.

BatteryStatus

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.14")

Status of the battery. The value 10 (Undefined) is not valid in the CIM schema because in DMI it represents that no battery is installed. In this case, the object should not be instantiated.

This property is inherited from CIM_Battery.

Other (1)

The battery is discharging.

Unknown (2)

The system has access to AC so no battery is being discharged. However, the battery is not necessarily charging.

Fully Charged (3)

Low (4)

Critical (5)

Charging (6)

Charging and High (7)

Charging and Low (8)

Charging and Critical (9)

Undefined (10)

Partially Charged (11)

Caption

Data type: string

Access type: Read-only

Qualifiers: MaxLen (64), DisplayName ("Caption")

Short description of the object a one-line string.

This property is inherited from CIM_ManagedSystemElement.

Chemistry

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.7")

Enumeration that describes the battery's chemistry.

This property is inherited from CIM_Battery.

Other (1)

Unknown (2)

Lead Acid (3)

Nickel Cadmium (4)

Nickel Metal Hydride (5)

Lithium-ion (6)

Zinc air (7)

Lithium Polymer (8)

ConfigManagerErrorCode

Data type: uint32

Access type: Read-only

Qualifiers: Schema ("Win32")

Windows Configuration Manager error code.

This property is inherited from CIM_LogicalDevice.

This device is working properly. (0)

Device is working properly.

This device is not configured correctly. (1)

Device is not configured correctly.

Windows cannot load the driver for this device. (2)

The driver for this device might be corrupted, or your system may be running low on memory or other resources. (3)

Driver for this device might be corrupted, or the system may be low on memory or other resources.

This device is not working properly. One of its drivers or your registry might be corrupted. (4)

Device is not working properly. One of its drivers or the registry might be corrupted.

The driver for this device needs a resource that Windows cannot manage. (5)

Driver for the device requires a resource that Windows cannot manage.

The boot configuration for this device conflicts with other devices. (6)

Boot configuration for the device conflicts with other devices.

Cannot filter. (7)

The driver loader for the device is missing. (8)

Driver loader for the device is missing.

This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly. (9)

Device is not working properly. The controlling firmware is incorrectly reporting the resources for the device.

This device cannot start. (10)

Device cannot start.

This device failed. (11)

Device failed.

This device cannot find enough free resources that it can use. (12)

Device cannot find enough free resources to use.

Windows cannot verify this device's resources. (13)

Windows cannot verify the device's resources.

This device cannot work properly until you restart your computer. (14)

Device cannot work properly until the computer is restarted.

This device is not working properly because there is probably a re-enumeration problem. (15)

Device is not working properly due to a possible re-enumeration problem.

Windows cannot identify all the resources this device uses. (16)

Windows cannot identify all of the resources that the device uses.

This device is asking for an unknown resource type. (17)

Device is requesting an unknown resource type.

Reinstall the drivers for this device. (18)

Device drivers must be reinstalled.

Failure using the VxD loader. (19)

Your registry might be corrupted. (20)

Registry might be corrupted.

System failure: Try changing the driver for this device. If that does not work, see your hardware documentation. Windows is removing this device. (21)

System failure. If changing the device driver is ineffective, see the hardware documentation. Windows is removing the device.

This device is disabled. (22)

Device is disabled.

System failure: Try changing the driver for this device. If that doesn't work, see your hardware documentation. (23)

System failure. If changing the device driver is ineffective, see the hardware documentation.

This device is not present, is not working properly, or does not have all its drivers installed. (24)

Device is not present, not working properly, or does not have all of its drivers installed.

Windows is still setting up this device. (25)

Windows is still setting up the device.

Windows is still setting up this device. (26)

Windows is still setting up the device.

This device does not have valid log configuration. (27)

Device does not have valid log configuration.

The drivers for this device are not installed. (28)

Device drivers are not installed.

This device is disabled because the firmware of the device did not give it the required resources. (29)

Device is disabled. The device firmware did not provide the required resources.

This device is using an Interrupt Request (IRQ) resource that another device is using. (30)

Device is using an IRQ resource that another device is using.

This device is not working properly because Windows cannot load the drivers required for this device. (31)

Device is not working properly. Windows cannot load the required device drivers.

ConfigManagerUserConfig

Data type: boolean

Access type: Read-only

Qualifiers: Schema ("Win32")

If True, the device is using a user-defined configuration.

This property is inherited from CIM_LogicalDevice.

CreationClassName

Data type: string

Access type: Read-only

Qualifiers: CIM_Key

Name of the first concrete class that appears in the inheritance chain used in the creation of an instance. When used with the other key properties of the class, the property allows all instances of this class and its subclasses to be identified uniquely.

This property is inherited from CIM_LogicalDevice.

Description

Data type: string

Access type: Read-only

Qualifiers: DisplayName ("Description")

Description of the object.

This property is inherited from CIM_ManagedSystemElement.

DesignCapacity

Data type: uint32

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.8"), Units ("milliwatt-hours")

Design capacity of the battery in milliwatt-hours. If the property is not supported, enter 0 (zero).

This property is inherited from CIM_Battery.

DesignVoltage

Data type: uint64

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.9"), Units ("millivolts")

Design voltage of the battery in millivolts. If the attribute is not supported, enter 0 (zero).

This property is inherited from CIM_Battery.

For more information about using uint64 values in scripts, see Scripting in WMI.

DeviceID

Data type: string

Access type: Read-only

Qualifiers: Key, Override ("DeviceId"), MappingStrings ("WMI")

Identifies the battery.

This property is inherited from CIM_LogicalDevice.

Example: "Internal Battery"

ErrorCleared

Data type: boolean

Access type: Read-only

If True, the error reported in the LastErrorCode property is now cleared.

This property is inherited from CIM_LogicalDevice.

ErrorDescription

Data type: string

Access type: Read-only

Free-form string that supplies more information about the error recorded in LastErrorCode property, and information about any corrective actions that may be taken.

This property is inherited from CIM_LogicalDevice.

EstimatedChargeRemaining

Data type: uint16

Access type: Read-only

Qualifiers: Units ("percent")

Estimate of the percentage of full charge remaining.

This property is inherited from CIM_Battery.

EstimatedRunTime

Data type: uint32

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.15"), Units ("minutes")

Estimate in minutes of the time to battery charge depletion under the present load conditions if the utility power is off, or lost and remains off, or a laptop is disconnected from a power source.

This property is inherited from CIM_Battery.

ExpectedBatteryLife

Data type: uint32

Access type: Read-only

Qualifiers: DEPRECATED, MappingStrings ("HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services|BatteryLife"), Units ("minutes")

Amount of time it takes to completely drain the battery after it is fully charged. This property is no longer used and is considered obsolete.

ExpectedLife

Data type: uint32

Access type: Read-only

Qualifiers: Units ("minutes")

Battery's expected lifetime in minutes, assuming that the battery is fully charged. The property represents the total expected life of the battery, not its current remaining life, which is indicated by the EstimatedRunTime property.

This property is inherited from CIM_Battery.

FullChargeCapacity

Data type: uint32

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.11"), Units ("milliwatt-hours")

Full charge capacity of the battery in milliwatt-hours. Comparison of the value to the DesignCapacity property determines when the battery requires replacement. A battery's end of life is typically when the FullChargeCapacity property falls below 80% of the DesignCapacity property. If the property is not supported, enter 0 (zero).

This property is inherited from CIM_Battery.

InstallDate

Data type: datetime

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|ComponentID|001.5"), DisplayName ("Install Date")

Date and time the object was installed. This property does not need a value to indicate that the object is installed.

This property is inherited from CIM_ManagedSystemElement.

LastErrorCode

Data type: uint32

Access type: Read-only

Last error code reported by the logical device.

This property is inherited from CIM_LogicalDevice.

MaxRechargeTime

Data type: uint32

Access type: Read-only

Qualifiers: Units ("minutes")

Maximum time, in minutes, to fully charge the battery. The property represents the time to recharge a fully depleted battery, not the current remaining charge time, which is indicated in the TimeToFullCharge property.

This property is inherited from CIM_Battery.

Name

Data type: string

Access type: Read-only

Qualifiers: DisplayName ("Name")

Defines the label by which the object is known. When subclassed, the property can be overridden to be a key property.

This property is inherited from CIM_ManagedSystemElement.

PNPDeviceID

Data type: string

Access type: Read-only

Qualifiers: Schema ("Win32")

Windows Plug and Play device identifier of the logical device.

This property is inherited from CIM_LogicalDevice.

Example: "*PNP030b"

PowerManagementCapabilities

Data type: uint16 array

Access type: Read-only

Array of the specific power-related capabilities of a logical device.

This property is inherited from CIM_LogicalDevice.

Unknown (0)

Not Supported (1)

Disabled (2)

Enabled (3)

The power management features are currently enabled but the exact feature set is unknown or the information is unavailable.

Power Saving Modes Entered Automatically (4)

The device can change its power state based on usage or other criteria.

Power State Settable (5)

The SetPowerState method is supported. This method is found on the parent CIM_LogicalDevice class and can be implemented. For more information, see Designing Managed Object Format (MOF) Classes.

Power Cycling Supported (6)

The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle).

Timed Power On Supported (7)

Timed Power-On Supported

The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle) and Time set to a specific date and time, or interval, for power-on.

PowerManagementSupported

Data type: boolean

Access type: Read-only

If True, the device can be power-managed (can be put into suspend mode, and so on). The property does not indicate that power management features are currently enabled, only that the logical device is capable of power management.

This property is inherited from CIM_LogicalDevice.

SmartBatteryVersion

Data type: string

Access type: Read-only

Qualifiers: MaxLen (64), MappingStrings ("MIF.DMTF|Portable Battery|002.10")

Data Specification version number supported by the battery. If the battery does not support this function, the value should be left blank.

This property is inherited from CIM_Battery.

Status

Data type: string

Access type: Read-only

Qualifiers: MaxLen (10), DisplayName ("Status")

Current status of the object. Various operational and nonoperational statuses can be defined. Operational statuses include: "OK", "Degraded", and "Pred Fail" (an element, such as a SMART-enabled hard disk drive, may be functioning properly but predicting a failure in the near future). Nonoperational statuses include: "Error", "Starting", "Stopping", and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is online, yet the managed element is neither "OK" nor in one of the other states.

This property is inherited from CIM_ManagedSystemElement.

Values include the following:

OK ("OK")

Error ("Error")

Degraded ("Degraded")

Unknown ("Unknown")

Pred Fail ("Pred Fail")

Starting ("Starting")

Stopping ("Stopping")

Service ("Service")

Stressed ("Stressed")

NonRecover ("NonRecover")

No Contact ("No Contact")

Lost Comm ("Lost Comm")

StatusInfo

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Operational State|003.3")

State of the logical device. If this property does not apply to the logical device, the value 5 (Not Applicable) should be used.

This property is inherited from CIM_LogicalDevice.

Other (1)

Unknown (2)

Enabled (3)

Disabled (4)

Not Applicable (5)

SystemCreationClassName

Data type: string

Access type: Read-only

Qualifiers: Propagated ("CIM_System.CreationClassName"), CIM_Key

Value of the scoping computer's CreationClassName property.

This property is inherited from CIM_LogicalDevice.

SystemName

Data type: string

Access type: Read-only

Qualifiers: Propagated ("CIM_System.Name"), CIM_Key

Name of the scoping system.

This property is inherited from CIM_LogicalDevice.

TimeOnBattery

Data type: uint32

Access type: Read-only

Qualifiers: Units ("seconds")

Elapsed time in seconds since the computer system's UPS last switched to battery power, or the time since the system or UPS was last restarted, whichever is less. If the battery is "on line", 0 (zero) is returned.

This property is inherited from CIM_Battery.

TimeToFullCharge

Data type: uint32

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|Portable Battery|002.16"), Units ("minutes")

Remaining time to charge the battery fully in minutes at the current charging rate and usage.

This property is inherited from CIM_Battery.

Remarks

The Win32_Battery class is derived from CIM_Battery which derives from CIM_LogicalDevice.

Windows Server 2008 contains the (APC) UPS drivers in the OS, which allows you to treat the UPS as a battery supply. This allows you to monitor the UPS status using a script and take actions when necessary.

Examples

The Toggle-Wireless.ps1 PowerShell code sample queries Win32_Battery to determine whether or not to toggle the wireless in order to save power.

The List UPS Information Perl sample Lists information about the uninterruptible power sources attached to a computer.

For a furthe discussion of using Win32_Battery to monitor your laptop, see Use PowerShell to Detect Power State and to Set Power Plan.

Requirements

Minimum supported client
Windows Vista
Minimum supported server
Windows Server 2008
Namespace
Root\CIMV2
MOF
CIMWin32.mof
DLL
CIMWin32.dll

See also

CIM_Battery

Computer System Hardware Classes