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Wattage vs BatteryCare: catalog facts
Wattage	BatteryCare
Free Free and open source under the GPL-3.0-or-later licence.	Free Freeware.
Linux	Windows
Battery health and energy statistics in one window Keeps device history information	Detailed battery wear and capacity information Automatic power plan switching on AC or battery
Linux only Focused on power devices, not general hardware monitoring	Windows only Some features target older Windows versions such as Aero themes
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License: Freeware
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 2, 2026

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