Battery Health Checker

# battery-check.ps1
# Checks battery health and generates a detailed HTML report in the current directory.

$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Definition
$ReportPath = Join-Path $ScriptDir "battery-report.html"

# Generate the full HTML report
Write-Host ""
Write-Host "Generating battery report..." -ForegroundColor Cyan
cmd /c "powercfg /batteryreport /output `"$ReportPath`"" 2>$null
if (Test-Path $ReportPath) {
    Write-Host "Report saved to: $ReportPath" -ForegroundColor Green
} else {
    Write-Host "Warning: Could not generate HTML report (may need to run as Administrator)." -ForegroundColor Yellow
}

# Gather battery stats
$battery    = Get-WmiObject -Class Win32_Battery -ErrorAction SilentlyContinue
$fullCap    = (Get-WmiObject -Namespace root/WMI -Class BatteryFullChargedCapacity -ErrorAction SilentlyContinue).FullChargedCapacity
$designCap  = (Get-WmiObject -Namespace root/WMI -Class BatteryStaticData -ErrorAction SilentlyContinue).DesignedCapacity

$statusMap = @{
    1 = "Discharging"
    2 = "Plugged in (AC Power)"
    3 = "Fully Charged"
    4 = "Low"
    5 = "Critical"
    6 = "Charging"
    7 = "Charging (High)"
    8 = "Charging (Low)"
    9 = "Charging (Critical)"
}

$charge = if ($battery) { "$($battery.EstimatedChargeRemaining)%" } else { "N/A" }
$statusRaw = if ($battery) { $statusMap[[int]$battery.BatteryStatus] } else { $null }
$status = if ($statusRaw) { $statusRaw } elseif ($battery) { "Unknown" } else { "N/A" }

$health = if ($fullCap -and $designCap -and $designCap -gt 0) {
    [math]::Round(($fullCap / $designCap) * 100, 1)
} else { $null }

$healthLabel = if ($health -ge 80) { "Good" }
               elseif ($health -ge 60) { "Fair (degraded)" }
               elseif ($health) { "Poor (consider replacement)" }
               else { "N/A" }

$healthColor = if ($health -ge 80) { "Green" }
               elseif ($health -ge 60) { "Yellow" }
               else { "Red" }

# Print summary
Write-Host ""
Write-Host "=============================" -ForegroundColor Cyan
Write-Host "     BATTERY HEALTH SUMMARY  " -ForegroundColor Cyan
Write-Host "=============================" -ForegroundColor Cyan
Write-Host ""
Write-Host "  Current Charge   : $charge"
Write-Host "  Status           : $status"
if ($fullCap)   { Write-Host "  Full Charge Cap  : $([math]::Round($fullCap / 1000, 1)) Wh  ($fullCap mWh)" }
if ($designCap) { Write-Host "  Design Capacity  : $([math]::Round($designCap / 1000, 1)) Wh  ($designCap mWh)" }
if ($health) {
    Write-Host "  Battery Health   : $health%  - " -NoNewline
    Write-Host $healthLabel -ForegroundColor $healthColor
}
Write-Host ""
if (Test-Path $ReportPath) {
    Write-Host "  Full report      : $ReportPath" -ForegroundColor DarkGray
}
Write-Host "=============================" -ForegroundColor Cyan
Write-Host ""

.\battery-check.ps1

Set-ExecutionPolicy -Scope CurrentUser RemoteSigned