C# Definition:

[StructLayout(LayoutKind.Sequential)]
internal class SYSTEM_POWER_STATUS_EX
{
   public BYTE ACLineStatus = 0;
   public BYTE BatteryFlag = 0;
   public BYTE BatteryLifePercent = 0;
   public BYTE Reserved1 = 0;
   public DWORD BatteryLifeTime = 0;
   public DWORD BatteryFullLifeTime = 0;
   public BYTE Reserved2 = 0;
   public BYTE BackupBatteryFlag = 0;
   public BYTE BackupBatteryLifePercent = 0;
   public BYTE Reserved3 = 0;
   public DWORD BackupBatteryLifeTime = 0;
   public DWORD BackupBatteryFullLifeTime = 0;
}

VB Definition:

Structure SYSTEM_POWER_STATUS_EX
   Public TODO
End Structure

User-Defined Field Types:

None.

Notes:

ACLineStatus

    AC power status. It is one of the following values. Value Description
        Offline = 0
        Online = 1
        Unknown status = 255
        All other values are reserved.

BatteryFlag

    Battery charge status. It can be a combination of the following values:

• BATTERY_FLAG_HIGH
• BATTERY_FLAG_CRITICAL
• BATTERY_FLAG_CHARGING
• BATTERY_FLAG_NO_BATTERY
• BATTERY_FLAG_UNKNOWN
• BATTERY_FLAG_LOW

BatteryLifePercent

    Percentage of full battery charge remaining. This member can be a value in the range 0 to 100, or 255 if status is unknown. All other values are reserved.

Reserved1

    Reserved; set to zero.

BatteryLifeTime

    Number of seconds of battery life remaining, or 0xFFFFFFFF if remaining seconds are unknown.

BatteryFullLifeTime

    Number of seconds of battery life when at full charge, or 0xFFFFFFFF if full lifetime is unknown.

Reserved2

    Reserved; set to zero.

BackupBatteryFlag

    Backup battery charge status. It can be a combination of the following values:

• BATTERY_FLAG_HIGH
• BATTERY_FLAG_CRITICAL
• BATTERY_FLAG_CHARGING
• BATTERY_FLAG_NO_BATTERY
• BATTERY_FLAG_UNKNOWN
• BATTERY_FLAG_LOW

BackupBatteryLifePercent

    Percentage of full backup battery charge remaining. Must be in the range 0 to 100, or BATTERY_PERCENTAGE_UNKNOWN.

Reserved3

    Reserved; set to zero

BackupBatteryLifeTime

    Number of seconds of backup battery life remaining, or BATTERY_LIFE_UNKNOWN if remaining seconds are unknown.

BackupBatteryFullLifeTime

    Number of seconds of backup battery life when at full charge, or BATTERY_LIFE_UNKNOWN if full lifetime is unknown.