Smart Alerts
Set custom thresholds for full and low battery. Escalating backoff prevents alert fatigue so you never get spammed.
Battery Notifier
for WindowsmacOSLinux
Know exactly when to plug in and when to unplug. Keeps your battery healthy so you don't have to think about it.
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Downloads
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Latest
MIT
License
v… — Latest Release
What it doesSits in your tray.
Sits in your tray.
Speaks up when it matters.
Instant Charger Detection
Detects plug-in and unplug instantly. Shows time estimates like "45m to full charge" right in the tray.
Battery Drainer Detection
Identifies power-hungry apps with estimated time impact. Know exactly what's eating your battery.
Health Dashboard
Track capacity, cycle count, temperature, power draw, and wear progression over time.
14+ Notification Sounds
10 synthesized tones, 4 curated clips, or import your own .wav, .mp3, .m4a, .ogg, .flac, or .aac files.
Themes, Focus & Auto Start
System, Light, and Dark themes. Respects Do Not Disturb. Launches at startup silently.
Fully Open Source
Built with Avalonia UI and .NET 10. MIT licensed, no telemetry, no network calls. Settings encrypted at rest. Read every line on GitHub — or fork it.
Setup
Three steps. No account.
1
Install
Run Setup.exe on Windows, or extract the tar.gz on Linux. On macOS, install via Homebrew for the smoothest experience.
2
Set your thresholds
Pick when to get warned — low battery, full charge, or both. Choose from 14+ sounds or bring your own.
3
Forget about it
Runs silently in your system tray. Only speaks up when your battery actually needs attention.
Why switch
Built-in alerts fall short.
Your OS gives you a single low battery warning. That's it.
Feature
Built-in OS
Battery Notifier
Custom low battery threshold
✕
✓
Full charge alert
✕
✓
Time-to-full estimate
✕
✓
Custom notification sounds
✕
✓ 14+
Dark & light themes
✕
✓
Focus / DND aware
Partial
✓
Smart alert backoff
✕
✓
Battery drainer detection
✕
✓
Health dashboard
✕
✓
Cross-platform
✕
✓ All 3
Open source
✕
✓ MIT
Price
Free
Free
Trusted by thousands across the web
Get it
Download Battery Notifier
Pick your platform. No account needed.
or install via package manager
winget install Sandip124.BatteryNotifierNeed a different build? All downloads on GitHub · portable, ARM64, and more
FAQ
Common questions
Is it really free?
Yes. MIT licensed, no ads, no in-app purchases, no account. Free forever.
Which platforms are supported?
Windows 10, Windows 11, macOS, and Linux. Install via winget on Windows, Homebrew tap on macOS, or download directly.
macOS blocks the app from opening?
macOS Gatekeeper blocks apps that aren't signed with an Apple certificate. This is normal for open-source apps. The easiest fix is to install via Homebrew:brew install --cask Sandip124/tap/battery-notifier
If you downloaded the .pkg directly, open Terminal and run:sudo xattr -cr /Applications/BatteryNotifier.app
Or go to System Settings → Privacy & Security → click “Open Anyway” next to the blocked app message.
How do I set up alerts?
Open Settings, enable Full Battery or Low Battery notifications, set your percentage threshold, and pick a sound. That's it.
Does it collect any data?
No. Zero telemetry, no network calls, runs entirely offline. Settings are encrypted at rest. Full source on GitHub.
Will it slow down my laptop?
No. Runs natively with minimal CPU and memory. You won't notice it's there.
Can it help extend battery lifespan?
Yes. Set a full charge alert at 80% and unplug before 100%. This reduces wear on lithium-ion cells over time.
Support
Keep this project alive ☕
No ads. No subscriptions. No VC funding. Just one developer maintaining it in spare time.
If it's useful, chip in
Free forever. Even a dollar helps keep it maintained.
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