Battery Monitor

A lightweight, real-time battery dashboard for Windows laptops.
Dark & light theme · 13 languages · System tray · No installation required.

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Screenshot

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Features

• Live battery data — charge level, health, voltage, charge/discharge rate
• Runtime estimate — time until full or time remaining on battery
• Capacity overview — design capacity vs. actual full-charge capacity
• Device info — model, manufacturer, serial number via WMI
• System tray icon — shows charge %, watt, or mWh — configurable
• Taskbar badge — overlay on the taskbar button, color-coded by charge level
• Dark & light theme — toggle in the title bar
• 13 languages — auto-detects system language on first launch
• Portable — single .exe, no installer, no registry entries

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Languages

🇬🇧 English	🇩🇪 Deutsch	🇫🇷 Français	🇪🇸 Español	🇮🇹 Italiano
🇵🇹 Português	🇷🇴 Română	🇵🇱 Polski	🇳🇱 Nederlands	🇹🇷 Türkçe
🇷🇺 Русский	🇨🇳 中文	🇯🇵 日本語

Language is auto-detected from Windows system settings on first launch and can be changed at any time via the title bar button.

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Download

Go to Releases and pick the right version:

File	Description
BatteryMonitor-win-x64-standalone.exe	64-bit · No .NET required · ~160 MB
BatteryMonitor-win-x64-net8.exe	64-bit · Requires .NET 8 Desktop Runtime · ~8 MB
BatteryMonitor-win-arm64-standalone.exe	ARM64 · No .NET required · ~140 MB
BatteryMonitor-win-arm64-net8.exe	ARM64 · Requires .NET 8 Desktop Runtime · ~8 MB

Not sure which to pick? Use win-x64-net8 if .NET 8 is already installed (most development machines). Use win-x64-standalone for a just-works portable EXE on any Windows 10/11 PC.

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Requirements

• Windows 10 or Windows 11
• x64 or ARM64 processor
• Battery with a standard ACPI driver (all modern laptops)
• .NET 8 Desktop Runtime — only for the -net8 variants

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Build from Source

# Prerequisites: .NET 8 SDK

git clone https://github.com/lucatze/BatteryMonitor.git
cd BatteryMonitor/BatteryMonitor

# Run in debug
dotnet run

# Build release
dotnet build -c Release

# Publish single-file EXE (standalone)
dotnet publish BatteryMonitor.csproj -c Release -r win-x64 --self-contained true `
  -p:PublishSingleFile=true `
  -p:IncludeNativeLibrariesForSelfExtract=true `
  -o dist

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Tech Stack

Language	C# 12
Framework	.NET 8 · WPF
Battery data	WMI (root\wmi)
Tray icon	Hardcodet.NotifyIcon.Wpf
UI pattern	Code-behind (no MVVM framework)
Settings	%AppData%\BatteryMonitor\settings.json

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License

MIT — see LICENSE