Click Battery Check to examine your battery and display the results of your battery status check. Figure 2: HP Battery Check, showing Status: OK for the battery. A Status: OK message indicates the battery is operating and functioning as designed and within specification. However, if additional computer operating time is desired, the power management settings can be adjusted or another battery may be purchased.
http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c00821536
Capacity. The current battery capacity, in mWh (or relative). This value can be used to generate a gas gauge display by dividing it by FullChargedCapacity member of the BATTERY_INFORMATION structure. If the capacity is unavailable, this member is BATTERY_UNKNOWN_CAPACITY.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa372671(v=vs.85).aspx
System Power Status. The system power status indicates whether the source of power for a computer is a system battery or AC power. For computers that use batteries, the system power status also indicates how much battery life remains and whether the battery is charging. Power information is retrieved by registering for power setting notifications through the RegisterPowerSettingNotification function.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa373231(v=vs.85).aspx
A Failure ID: REOOW-L message indicates that the battery is older than 1 year and is also a Long Life battery. Further investigation is required to determine the warranty status of battery under test. Please contact HP or a HP Authorized Service Provider to request a replacement battery.
http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c00821536
If the battery is in a low charge state (at less than 3%) you may also get a false reading. Follow the steps below to check the battery using HP Support Assistant. Click Start and select HP Support Assistant. On the HP Support Assistant window, select Troubleshoot, and then select Power, Thermal, and Mechanical.
http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c00821536
This structure is used by the IOCTL_BATTERY_QUERY_STATUS control code.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa372671(v=vs.85).aspx
As another example, an application that is beginning a lengthy operation should check the status to determine whether enough battery power exists to complete the operation. By default, the system does not query applications or drivers during sleep transitions.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa373231(v=vs.85).aspx
This value will be in milliwatts unless the battery rate information is relative, in which case it will be in arbitrary units per hour. To determine if battery information is relative, examine the BATTERY_CAPACITY_RELATIVE flag in the Capabilities member of the BATTERY_INFORMATION structure.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa372671(v=vs.85).aspx
The BATTERY_CRITICAL flag in the PowerState member of this structure indicates a hardware battery critical condition. This critical level is set by the battery manufacturer, not by the user in the critical battery alarm..
https://msdn.microsoft.com/en-us/library/windows/desktop/aa372671(v=vs.85).aspx
Figure 5: HP Battery Check, showing Status: Replace with Out-of-Warranty Failure ID for the battery. If the battery is older than 1 year and was warranted for 1 year, Failure ID: REOOW is displayed below the Status: Replace explanation. Therefore the battery is out-of-warranty.
http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c00821536
what is the battery of my status?
Click Battery Check to examine your battery and display the results of your battery status check.