batctl is a terminal-based utility for configuring battery charging thresholds on Linux laptops. It provides both an interactive terminal user interface and a scriptable command-line interface, allowing users to adjust charging behaviour and examine battery information.
Many laptops offer hardware controls that restrict charging to a specified percentage. These limits can help reduce battery wear, particularly on systems that remain connected to mains power for extended periods. Unfortunately, different manufacturers expose their charging controls through different kernel interfaces.
batctl addresses this fragmentation by detecting supported laptop hardware and selecting an appropriate backend. It supports numerous manufacturers, including Lenovo, ASUS, Dell, Acer, Framework, System76, Samsung and MSI. A generic backend handles other systems exposing standard Linux battery charging interfaces.
Users can configure charging start and stop thresholds, where supported, or select from predefined profiles. The Max Lifespan, Balanced, Plugged In and Full Charge presets automatically adapt to the capabilities of the detected hardware.
The application also displays battery health, capacity, charge cycles and other available statistics.
Charging thresholds can be saved and restored after system restarts or suspend/resume events using systemd services. This is particularly useful on laptops whose firmware does not retain these settings automatically.
This is free and open source software.
Key Features
- Interactive terminal interface for managing battery charging thresholds.
- Scriptable command-line interface for automation.
- Automatically detects supported laptop hardware and charging interfaces.
- Supports more than 16 manufacturer-specific battery control backends.
- Configure charging start and stop thresholds where supported.
- Built-in Max Lifespan, Balanced, Plugged In and Full Charge presets.
- Automatically adapts charging presets to hardware-supported limits.
- Display battery charge, health, capacity, cycle count and energy statistics.
- Inspect supported charging behaviour controls.
- Save configuration settings and restore them after reboot or resume.
- Generic backend for standard Linux sysfs charging interfaces.
Website: github.com/Ooooze/batctl
Support:
Developer: Ooooze
License: MIT License
batctl is written in Go. Learn Go with our recommended free books and free tutorials.
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