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The following table shows the battery driver functions with a description of the purpose of each.
| Programming element | Description |
|---|---|
| BatteryDrvrGetLevels | This function returns the number of levels that the battery driver is capable of returning in the BatteryFlag and BackupBatteryFlag members of the SYSTEM_POWER_STATUS_EX2 structure. |
| BatteryDrvrSupportsChangeNotification | This function indicates whether the battery driver can report whether the batteries were changed. |
| BatteryGetLifeTimeInfo | This function retrieves the time the user changed the batteries, the amount of time they used the batteries, and the amount of time they used the batteries before replacing them. |
| BatteryNotifyOfTimeChange | This function adjusts times to account for the user changing the real time. |
| BatteryPDDDeinitialize | This function allows the battery PDD to perform hardware-specific cleanup. |
| BatteryPDDGetLevels | This function indicates how many battery levels are reported in the BatteryFlag and BackupBatteryFlag members of the SYSTEM_POWER_STATUS_EX2 structure filled in by BatteryPDDGetStatus. |
| BatteryPDDGetStatus | This function obtains the most current battery and power status available on the platform. It fills in the structures pointed to by its parameters. |
| BatteryPDDInitialize | This function allows the battery PDD to perform hardware-specific initialization. |
| BatteryPDDPowerHandler | This power callback performs hardware-specific processing for the battery driver. |
| BatteryPDDResume | This function performs hardware-specific battery processing in a thread context following system resume. |
| BatteryPDDSupportsChangeNotification | This function indicates whether the battery driver can report whether the batteries were changed. |
| PFN_BATTERY_PDD_IOCONTROL | This function signature is for the battery driver custom IOCTL handler. It implements the optional PDD IOCTL interface. |
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