diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index f53b97e..11c7da8 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -264,6 +264,7 @@
     <Compile Include="Model\CommandModel.cs"/>
     <Compile Include="Model\ResponseModel.cs" />
     <Compile Include="Model\SampleRateModel.cs"/>
+    <Compile Include="Model\SystemPowerStatus.cs"/>
     <Compile Include="ViewModels\AudioFileExplorerDialogViewModel.cs"/>
     <Compile Include="ViewModels\AudioVisualizeDialogViewModel.cs"/>
     <Compile Include="ViewModels\EditSoundSampleRateDialogViewModel.cs"/>
@@ -309,7 +310,6 @@
     <Compile Include="Util\LogHelper.cs" />
     <Compile Include="Util\MethodExtensions.cs" />
     <Compile Include="Util\CalendarHub.cs" />
-    <Compile Include="Util\SystemConfig.cs" />
     <Compile Include="ViewModels\AddSoundSpeedDialogViewModel.cs" />
     <Compile Include="ViewModels\ApplicationInfoDialogViewModel.cs" />
     <Compile Include="ViewModels\BigPictureViewModel.cs" />

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index f53b97e..11c7da8 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -264,6 +264,7 @@
     <Compile Include="Model\CommandModel.cs"/>
     <Compile Include="Model\ResponseModel.cs" />
     <Compile Include="Model\SampleRateModel.cs"/>
+    <Compile Include="Model\SystemPowerStatus.cs"/>
     <Compile Include="ViewModels\AudioFileExplorerDialogViewModel.cs"/>
     <Compile Include="ViewModels\AudioVisualizeDialogViewModel.cs"/>
     <Compile Include="ViewModels\EditSoundSampleRateDialogViewModel.cs"/>
@@ -309,7 +310,6 @@
     <Compile Include="Util\LogHelper.cs" />
     <Compile Include="Util\MethodExtensions.cs" />
     <Compile Include="Util\CalendarHub.cs" />
-    <Compile Include="Util\SystemConfig.cs" />
     <Compile Include="ViewModels\AddSoundSpeedDialogViewModel.cs" />
     <Compile Include="ViewModels\ApplicationInfoDialogViewModel.cs" />
     <Compile Include="ViewModels\BigPictureViewModel.cs" />
diff --git a/Correlator/Model/SystemPowerStatus.cs b/Correlator/Model/SystemPowerStatus.cs
new file mode 100644
index 0000000..a2bee25
--- /dev/null
+++ b/Correlator/Model/SystemPowerStatus.cs
@@ -0,0 +1,44 @@
+using System.Runtime.InteropServices;
+
+namespace Correlator.Model
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct SystemPowerStatus
+    {
+        /// <summary>
+        /// 0x00 - Offline (no AC power)
+        /// 0x01 - Online (AC power is available)  
+        /// </summary>
+        public byte ACLineStatus;
+
+        /// <summary>
+        /// 0x00 - No system battery
+        /// 0x01 - High
+        /// 0x02 - Low
+        /// 0x04 - Critical
+        /// 0x08 - Charging
+        /// 0x80 - No system battery and AC power is available  
+        /// </summary>
+        public byte BatteryFlag;
+
+        /// <summary>
+        /// Percentage of battery life remaining (range is 0-100)  
+        /// </summary>
+        public byte BatteryLifePercent;
+
+        /// <summary>
+        /// Reserved, must be 0  
+        /// </summary>
+        public byte Reserved1;
+
+        /// <summary>
+        /// Remaining battery life in seconds 
+        /// </summary>
+        public int BatteryLifeTime;
+
+        /// <summary>
+        /// Estimated total battery life in seconds
+        /// </summary>
+        public int BatteryFullLifeTime;
+    }
+}
\ No newline at end of file

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index f53b97e..11c7da8 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -264,6 +264,7 @@
     <Compile Include="Model\CommandModel.cs"/>
     <Compile Include="Model\ResponseModel.cs" />
     <Compile Include="Model\SampleRateModel.cs"/>
+    <Compile Include="Model\SystemPowerStatus.cs"/>
     <Compile Include="ViewModels\AudioFileExplorerDialogViewModel.cs"/>
     <Compile Include="ViewModels\AudioVisualizeDialogViewModel.cs"/>
     <Compile Include="ViewModels\EditSoundSampleRateDialogViewModel.cs"/>
@@ -309,7 +310,6 @@
     <Compile Include="Util\LogHelper.cs" />
     <Compile Include="Util\MethodExtensions.cs" />
     <Compile Include="Util\CalendarHub.cs" />
-    <Compile Include="Util\SystemConfig.cs" />
     <Compile Include="ViewModels\AddSoundSpeedDialogViewModel.cs" />
     <Compile Include="ViewModels\ApplicationInfoDialogViewModel.cs" />
     <Compile Include="ViewModels\BigPictureViewModel.cs" />
diff --git a/Correlator/Model/SystemPowerStatus.cs b/Correlator/Model/SystemPowerStatus.cs
new file mode 100644
index 0000000..a2bee25
--- /dev/null
+++ b/Correlator/Model/SystemPowerStatus.cs
@@ -0,0 +1,44 @@
+using System.Runtime.InteropServices;
+
+namespace Correlator.Model
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct SystemPowerStatus
+    {
+        /// <summary>
+        /// 0x00 - Offline (no AC power)
+        /// 0x01 - Online (AC power is available)  
+        /// </summary>
+        public byte ACLineStatus;
+
+        /// <summary>
+        /// 0x00 - No system battery
+        /// 0x01 - High
+        /// 0x02 - Low
+        /// 0x04 - Critical
+        /// 0x08 - Charging
+        /// 0x80 - No system battery and AC power is available  
+        /// </summary>
+        public byte BatteryFlag;
+
+        /// <summary>
+        /// Percentage of battery life remaining (range is 0-100)  
+        /// </summary>
+        public byte BatteryLifePercent;
+
+        /// <summary>
+        /// Reserved, must be 0  
+        /// </summary>
+        public byte Reserved1;
+
+        /// <summary>
+        /// Remaining battery life in seconds 
+        /// </summary>
+        public int BatteryLifeTime;
+
+        /// <summary>
+        /// Estimated total battery life in seconds
+        /// </summary>
+        public int BatteryFullLifeTime;
+    }
+}
\ No newline at end of file
diff --git a/Correlator/Util/SystemConfig.cs b/Correlator/Util/SystemConfig.cs
deleted file mode 100644
index 385e00b..0000000
--- a/Correlator/Util/SystemConfig.cs
+++ /dev/null
@@ -1,42 +0,0 @@
-namespace Correlator.Util
-{
-    public class SystemConfig
-    {
-        /// <summary>
-        /// 顺序不可更改
-        /// </summary>
-        public struct SystemPowerStatus
-        {
-            public ACLineStatus AcLineStatus; //0 = offline, 1 = Online, 255 = UnKnown Status.   
-            public BatteryFlag BatteryFlag;
-            public byte BatteryPercent;
-            public SystemStatusFlag StatusFlag;
-            public int BatteryLifeTime;
-            public int BatteryFullLifeTime;
-        }
-
-        public enum ACLineStatus : byte
-        {
-            Offline = 0, //offline
-            Online = 1, //Online
-            UnKnownStatus = 255 // 未知
-        }
-
-        public enum BatteryFlag : byte
-        {
-            Middle = 0, // 电池未充电并且电池容量介于高电量和低电量之间
-            High = 1, // 电池电量超过66％
-            Low = 2, // 电池电量不足33％
-            Critical = 4, // 电池电量不足百分之五
-            Charging = 8, // 	充电中
-            NoSystemBattery = 128, // 无系统电池
-            UnKnownStatus = 255 // 无法读取电池标志信息
-        }
-
-        public enum SystemStatusFlag : byte
-        {
-            Off = 0, //  节电功能已关闭
-            On = 1 //  节电功能已打开，节省电池。尽可能节约能源
-        }
-    }
-}
\ No newline at end of file

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index f53b97e..11c7da8 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -264,6 +264,7 @@
     <Compile Include="Model\CommandModel.cs"/>
     <Compile Include="Model\ResponseModel.cs" />
     <Compile Include="Model\SampleRateModel.cs"/>
+    <Compile Include="Model\SystemPowerStatus.cs"/>
     <Compile Include="ViewModels\AudioFileExplorerDialogViewModel.cs"/>
     <Compile Include="ViewModels\AudioVisualizeDialogViewModel.cs"/>
     <Compile Include="ViewModels\EditSoundSampleRateDialogViewModel.cs"/>
@@ -309,7 +310,6 @@
     <Compile Include="Util\LogHelper.cs" />
     <Compile Include="Util\MethodExtensions.cs" />
     <Compile Include="Util\CalendarHub.cs" />
-    <Compile Include="Util\SystemConfig.cs" />
     <Compile Include="ViewModels\AddSoundSpeedDialogViewModel.cs" />
     <Compile Include="ViewModels\ApplicationInfoDialogViewModel.cs" />
     <Compile Include="ViewModels\BigPictureViewModel.cs" />
diff --git a/Correlator/Model/SystemPowerStatus.cs b/Correlator/Model/SystemPowerStatus.cs
new file mode 100644
index 0000000..a2bee25
--- /dev/null
+++ b/Correlator/Model/SystemPowerStatus.cs
@@ -0,0 +1,44 @@
+using System.Runtime.InteropServices;
+
+namespace Correlator.Model
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct SystemPowerStatus
+    {
+        /// <summary>
+        /// 0x00 - Offline (no AC power)
+        /// 0x01 - Online (AC power is available)  
+        /// </summary>
+        public byte ACLineStatus;
+
+        /// <summary>
+        /// 0x00 - No system battery
+        /// 0x01 - High
+        /// 0x02 - Low
+        /// 0x04 - Critical
+        /// 0x08 - Charging
+        /// 0x80 - No system battery and AC power is available  
+        /// </summary>
+        public byte BatteryFlag;
+
+        /// <summary>
+        /// Percentage of battery life remaining (range is 0-100)  
+        /// </summary>
+        public byte BatteryLifePercent;
+
+        /// <summary>
+        /// Reserved, must be 0  
+        /// </summary>
+        public byte Reserved1;
+
+        /// <summary>
+        /// Remaining battery life in seconds 
+        /// </summary>
+        public int BatteryLifeTime;
+
+        /// <summary>
+        /// Estimated total battery life in seconds
+        /// </summary>
+        public int BatteryFullLifeTime;
+    }
+}
\ No newline at end of file
diff --git a/Correlator/Util/SystemConfig.cs b/Correlator/Util/SystemConfig.cs
deleted file mode 100644
index 385e00b..0000000
--- a/Correlator/Util/SystemConfig.cs
+++ /dev/null
@@ -1,42 +0,0 @@
-namespace Correlator.Util
-{
-    public class SystemConfig
-    {
-        /// <summary>
-        /// 顺序不可更改
-        /// </summary>
-        public struct SystemPowerStatus
-        {
-            public ACLineStatus AcLineStatus; //0 = offline, 1 = Online, 255 = UnKnown Status.   
-            public BatteryFlag BatteryFlag;
-            public byte BatteryPercent;
-            public SystemStatusFlag StatusFlag;
-            public int BatteryLifeTime;
-            public int BatteryFullLifeTime;
-        }
-
-        public enum ACLineStatus : byte
-        {
-            Offline = 0, //offline
-            Online = 1, //Online
-            UnKnownStatus = 255 // 未知
-        }
-
-        public enum BatteryFlag : byte
-        {
-            Middle = 0, // 电池未充电并且电池容量介于高电量和低电量之间
-            High = 1, // 电池电量超过66％
-            Low = 2, // 电池电量不足33％
-            Critical = 4, // 电池电量不足百分之五
-            Charging = 8, // 	充电中
-            NoSystemBattery = 128, // 无系统电池
-            UnKnownStatus = 255 // 无法读取电池标志信息
-        }
-
-        public enum SystemStatusFlag : byte
-        {
-            Off = 0, //  节电功能已关闭
-            On = 1 //  节电功能已打开，节省电池。尽可能节约能源
-        }
-    }
-}
\ No newline at end of file
diff --git a/Correlator/ViewModels/MainWindowViewModel.cs b/Correlator/ViewModels/MainWindowViewModel.cs
index 39b278f..d6866b0 100644
--- a/Correlator/ViewModels/MainWindowViewModel.cs
+++ b/Correlator/ViewModels/MainWindowViewModel.cs
@@ -484,8 +484,8 @@
 
         #region PC电量状态
 
-        [DllImport("kernel32.dll", EntryPoint = "GetSystemPowerStatus")]
-        private static extern void GetSystemPowerStatus(ref SystemConfig.SystemPowerStatus lpSystemPowerStatus);
+        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
+        private static extern void GetSystemPowerStatus(ref SystemPowerStatus lpSystemPowerStatus);
 
         #endregion
 
@@ -1043,14 +1043,14 @@
             _timer.Start();
 
             //获取电池电量
-            var sysPower = new SystemConfig.SystemPowerStatus();
+            var sysPower = new SystemPowerStatus();
             GetSystemPowerStatus(ref sysPower);
-            ComputerBattery = sysPower.BatteryPercent == 255 ? 100 : sysPower.BatteryPercent;
+            ComputerBattery = sysPower.BatteryLifePercent;
 
             _batteryTimer.Tick += delegate
             {
                 GetSystemPowerStatus(ref sysPower);
-                ComputerBattery = sysPower.BatteryPercent == 255 ? 100 : sysPower.BatteryPercent;
+                ComputerBattery = sysPower.BatteryLifePercent;
             };
             _batteryTimer.Start();