diff --git a/src/Server/BatteryService/AmpValQueue.cs b/src/Server/BatteryService/AmpValQueue.cs
index b45aaa9..cfceb33 100644
--- a/src/Server/BatteryService/AmpValQueue.cs
+++ b/src/Server/BatteryService/AmpValQueue.cs
@@ -1,9 +1,15 @@
 namespace InverterMon.Server.BatteryService;
 
-public sealed class AmpValQueue(int fixedCapacity)
+public sealed class AmpValQueue
 {
     readonly Queue<float> _queue = new();
     bool _lastChargingState;
+    readonly int _fixedCapacity;
+
+    public AmpValQueue(int fixedCapacity)
+    {
+        _fixedCapacity = fixedCapacity;
+    }
 
     public void Store(float ampReading, bool chargingState)
     {
@@ -18,7 +24,7 @@ public void Store(float ampReading, bool chargingState)
         _lastChargingState = chargingState;
         _queue.Enqueue(ampReading);
 
-        if (_queue.Count > fixedCapacity)
+        if (_queue.Count > _fixedCapacity)
             _queue.Dequeue();
     }
 
diff --git a/src/Server/InverterMon.Server.csproj b/src/Server/InverterMon.Server.csproj
index 5db8ae1..e299f6f 100644
--- a/src/Server/InverterMon.Server.csproj
+++ b/src/Server/InverterMon.Server.csproj
@@ -2,11 +2,12 @@
 
     <PropertyGroup>
         <TargetFramework>net7.0</TargetFramework>
+        <LangVersion>11</LangVersion>
+
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
         <NoWarn>CS8618;CA2016</NoWarn>
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
-        <LangVersion>12</LangVersion>
     </PropertyGroup>
 
     <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
@@ -27,23 +28,23 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="SerialPortLib" Version="1.1.2" />
-        <PackageReference Include="FastEndpoints" Version="5.27.0" />
-        <PackageReference Include="LiteDB" Version="5.0.20" />
-        <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="7.*" />
+        <PackageReference Include="SerialPortLib" Version="1.1.2"/>
+        <PackageReference Include="FastEndpoints" Version="5.27.0"/>
+        <PackageReference Include="LiteDB" Version="5.0.20"/>
+        <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="7.*"/>
     </ItemGroup>
 
     <ItemGroup>
-        <ProjectReference Include="..\Client\InverterMon.Client.csproj" />
-        <ProjectReference Include="..\Shared\InverterMon.Shared.csproj" />
+        <ProjectReference Include="..\Client\InverterMon.Client.csproj"/>
+        <ProjectReference Include="..\Shared\InverterMon.Shared.csproj"/>
     </ItemGroup>
 
     <ItemGroup>
-        <Content Remove="appsettings.Development.json" />
-        <None Remove="InverterMon-log.db" />
-        <None Remove="InverterMon.db" />
-        <None Remove="InverterService\protocol.pdf" />
-        <None Include="../changelog.md" Link="changelog.md" />
+        <Content Remove="appsettings.Development.json"/>
+        <None Remove="InverterMon-log.db"/>
+        <None Remove="InverterMon.db"/>
+        <None Remove="InverterService\protocol.pdf"/>
+        <None Include="../changelog.md" Link="changelog.md"/>
     </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/Server/InverterService/StatusRetriever.cs b/src/Server/InverterService/StatusRetriever.cs
index 237b330..ef547ab 100644
--- a/src/Server/InverterService/StatusRetriever.cs
+++ b/src/Server/InverterService/StatusRetriever.cs
@@ -3,22 +3,33 @@
 
 namespace InverterMon.Server.InverterService;
 
-class StatusRetriever(CommandQueue queue, Database db, UserSettings userSettings) : BackgroundService
+class StatusRetriever : BackgroundService
 {
+    readonly CommandQueue _queue;
+    readonly Database _db;
+    readonly UserSettings _userSettings;
+
+    public StatusRetriever(CommandQueue queue, Database db, UserSettings userSettings)
+    {
+        _queue = queue;
+        _db = db;
+        _userSettings = userSettings;
+    }
+
     protected override async Task ExecuteAsync(CancellationToken c)
     {
-        var cmd = queue.StatusCommand;
+        var cmd = _queue.StatusCommand;
 
         while (!c.IsCancellationRequested)
         {
-            if (queue.IsAcceptingCommands)
+            if (_queue.IsAcceptingCommands)
             {
                 //feels hacky. find a better solution.
-                cmd.Result.BatteryCapacity = userSettings.BatteryCapacity;
-                cmd.Result.PV_MaxCapacity = userSettings.PV_MaxCapacity;
+                cmd.Result.BatteryCapacity = _userSettings.BatteryCapacity;
+                cmd.Result.PV_MaxCapacity = _userSettings.PV_MaxCapacity;
 
-                queue.AddCommands(cmd);
-                _ = db.UpdateTodaysPvGeneration(cmd, c);
+                _queue.AddCommands(cmd);
+                _ = _db.UpdateTodaysPvGeneration(cmd, c);
             }
             await Task.Delay(Constants.StatusPollingFrequencyMillis);
         }
diff --git a/src/Server/Persistance/Settings/UserSettings.cs b/src/Server/Persistance/Settings/UserSettings.cs
index 6c0fc90..7893466 100644
--- a/src/Server/Persistance/Settings/UserSettings.cs
+++ b/src/Server/Persistance/Settings/UserSettings.cs
@@ -10,7 +10,7 @@ public class UserSettings
     public int BatteryCapacity { get; set; } = 100;
     public int SunlightStartHour { get; set; } = 6;
     public int SunlightEndHour { get; set; } = 18;
-    public int[] PVGraphRange => [0, (SunlightEndHour - SunlightStartHour) * 60];
+    public int[] PVGraphRange => new[] { 0, (SunlightEndHour - SunlightStartHour) * 60 };
     public int PVGraphTickCount => PVGraphRange[1] / (int)PVGenExtensions.BucketDuration.TotalMinutes;
 
     public SystemSpec ToSystemSpec()