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Wattage vs Battery Info: catalog facts
Wattage	Battery Info
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the GPL 3.0 or later.
Linux	Linux
Battery health and energy statistics in one window Keeps device history information	Shows design versus actual battery capacity as a percentage Lists battery and computer model for sourcing a replacement
Linux only Focused on power devices, not general hardware monitoring	Linux only Shows information only; no charge control or history graphs
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.