Notification for battery charge limit

charging-service.ps1

function Show-Notification {
    [cmdletbinding()]
    Param (
        [string]
        $ServiceName,
        [string]
        $ToastTitle,
        [string]
        [parameter(ValueFromPipeline)]
        $ToastText
    )
    [Windows.UI.Notifications.ToastNotificationManager, Windows.UI.Notifications, ContentType = WindowsRuntime] > $null
    $Template = [Windows.UI.Notifications.ToastNotificationManager]::GetTemplateContent([Windows.UI.Notifications.ToastTemplateType]::ToastText02)

    $Xml = [xml] $Template.GetXml()
    ($Xml.toast.visual.binding.text|where {$_.id -eq "1"}).AppendChild($Xml.CreateTextNode($ToastTitle)) > $null
    ($Xml.toast.visual.binding.text|where {$_.id -eq "2"}).AppendChild($Xml.CreateTextNode($ToastText)) > $null

    $SerializedXml = New-Object Windows.Data.Xml.Dom.XmlDocument
    $SerializedXml.LoadXml($Xml.OuterXml)

    $Toast = [Windows.UI.Notifications.ToastNotification]::new($SerializedXml)

    $Toast.Tag = $ServiceName
    $Toast.Group = $ServiceName

    $Toast.ExpirationTime = [DateTimeOffset]::Now.AddMinutes(1)

    $Notifier = [Windows.UI.Notifications.ToastNotificationManager]::CreateToastNotifier($ServiceName)
    $Notifier.Show($Toast);
}

function Start-Service {

    $ChargingThreshold = 80;
    $CheckInterval = 3 * 60; # 3 minutes
    $ServiceName = "Charging Service"
    $ToastText = "You can unplug the charger now"

    do {
        $Charging = $(Get-WmiObject -Class batterystatus -Namespace root\wmi).Charging
        $BatteryLevel = (Get-WmiObject win32_battery).EstimatedChargeRemaining

        if ($Charging -eq $true -and $BatteryLevel -ge $ChargingThreshold) {
            $ToastTitle = "Battery level reached $BatteryLevel%"
            Show-Notification -ServiceName $ServiceName -ToastTitle $ToastTitle -ToastText $ToastText
        }

        Start-Sleep -Seconds $CheckInterval
    } while($true)

}

Start-Service