One thing that’s still surprisingly missing on Linux is a nice, modern tool to properly monitor your laptop’s battery health. Sure, there are a few utilities here and there, but nothing that feels both polished and complete.
That’s where Wattage comes in — and it fills that gap beautifully.
Wattage is a small, modern GTK4 / libadwaita application that displays a detailed overview of your battery’s condition and technical metrics. And when we say detailed, we really mean it: charge cycle count, current capacity, voltage, health status, energy metrics, manufacturer information, and more are all available at a glance.
The application is written in Vala, which compiles down to C, making it lightweight and fast. It reads all its data directly from:
/sys/class/power_supply
which is the Linux system directory where power device information is exposed.
One of Wattage’s nice features is that it supports multiple batteries and power sources simultaneously. If your system has more than one battery (or a hybrid setup), everything is displayed cleanly inside the same interface.
The interface itself is intentionally minimalist and well-designed. All battery information is displayed in a single window, with no clutter, no confusing menus, and no unnecessary options — just the data you actually care about.
So instead of relying on the basic system tray indicator that only shows a percentage, you can now see your battery’s real condition. If its health starts declining, if the charge cycle count grows too high, or if the maximum capacity drops compared to the original design capacity — you’ll know immediately.
Wattage is developed by v81d, it’s open-source and licensed under GPL v3, and it’s available on GitHub. Like most modern Linux desktop apps, it’s also published on Flathub, which means you can install it on almost any distribution in just a couple of clicks — Ubuntu, Fedora, Arch, Mint, and more — as long as you have Flatpak installed.
In short: if you care about the long-term health of your laptop battery, Wattage is a simple, elegant, and genuinely useful little tool to have on your system 😊
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