Microsoft KB Archive/833600

= The Win32_Battery WMI class does not report the EstimatedChargeRemaining attribute correctly on a Windows XP-based portable computer =

Article ID: 833600

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional for Itanium-based systems
 * Microsoft Windows XP Professional for Itanium-based systems
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
When you query the Win32_Battery Windows Management Instrumentation (WMI) class on your Microsoft Windows XP-based portable computer, the EstimatedChargeRemaining attribute does not appear in the list of returned attributes.



CAUSE
This problem occurs because the EstimatedChargeRemaining attribute always has a value of NULL in Windows XP.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version         Size       File name   Platform ---  29-Jan-2004  18:47  5.1.2600.1337   1,268,224  Cimwin32.dll     x86 29-Jan-2004 18:41  5.1.2600.1337   4,965,376  Cimwin32.dll   IA-64

Note Because of file dependencies, this hotfix requires Microsoft Windows XP Service Pack 1 (SP1).



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows XP Service Pack 2.



MORE INFORMATION
The Win32_Battery WMI class represents a battery that is connected to the computer. The EstimatedChargeRemaining attribute reports an estimate of the percentage of the full charge that is remaining. In Windows XP, the EstimatedChargeRemaining attribute always has a value of NULL. In Microsoft Windows 2000, the EstimatedChargeRemaining attribute is correct.

For more information about the Win32_Battery WMI class, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/aa394074.aspx

For additional information about the terminology that is used in this article, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbqfe kbenv kbwinxppresp2fix kbfix kbbug KB833600

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