Your wireless batteries,
next to the clock.

Mouse, keyboard, headset and controller battery levels in the Windows tray, without vendor software running in the background.

Download for Windows All downloads
Latest releaseWindows 10 / 11Free and open source
The panel: a mouse, AirPods with each earbud, and a headset with the time left The right-click menu with Preferences beside it
Tray icon states: normal, charging, low, asleep, headset only and controllers, on dark and light taskbars
One small icon: the left half of the ring is the mouse, the right half the headset.

Why SwarlexBattery

Honest numbers

A level is shown only when the device itself answered. Rough readings are marked as approximate.

Small and quiet

One small program, about 10 MB of memory. No services, no vendor apps, no account.

Low battery alerts

Windows notifications when a battery runs low, held back until your full-screen game is over.

Time left

An estimate of the hours left, learned from how fast each device drains.

Updates itself

New versions come from GitHub with one click, each checked against its SHA-256.

Make it yours

Rename a device, give it another icon, its own low battery level or hide it: right-click it in the panel. Every setting is one click away in Preferences, with a coloured icon and charging animation if you like.

Your language, your theme

English, Türkçe, Deutsch, Español and Italiano. Light or dark, like your taskbar.

Supported devices

RazerLogitechAstroSteelSeriesHyperXCorsair ATK / VXE / PulsarASUS ROGWLmouseLAMZUG-WolvesMCHOSE AM InfinityAudezeJBLAULAKeychronLofreeDarmoshark PlayStation 5 / 4XboxNintendo Switch8BitDoAirPodsBluetooth devicesLaptop battery

The exact models are listed on GitHub. Device missing? Right-click the icon > Diagnostics… and attach the file to a device report.

Install

  1. Download SwarlexBattery-Setup.exe and run it.
  2. It installs for your user only. No administrator rights are needed.
  3. The icon appears next to the clock: left click for details, right click for the menu.

Prefer no installer? SwarlexBattery.exe from the release page runs as it is. Windows SmartScreen may warn the first time because the files are new; every release is built from the public source by GitHub Actions (code signing policy).