Tools for checking ACPI battery data


Four tools, Upower, Acpi, Acpitool, and Ibam let you keep track of your laptop's battery health state using the ACPI power management framework. Experience shows that Acpi and Upower, in particular, deliver precise, reliable values.


I would like to thank Werner Heuser, Arne Wichmann, and Justin Kelly for their appraisal and suggestions in the course of writing this article.

The Author

Frank Hofmann works on the road – preferably from Berlin, Geneva, and Cape Town – as a developer, trainer, and author. He is also the coauthor of the Debian Package Management Book (

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