I think that Firefox should have a setting to reduce battery consumption

[Lucas2]

I’ve been using Firefox as my primary browser, and while I love its performance and privacy features, I’ve noticed it can be quite demanding on battery life, especially on laptops. It would be fantastic if Mozilla could introduce a dedicated 'Battery Saver' or 'Power Efficiency' mode in the settings. This could automatically limit background tab activity, reduce animation intensity, or throttle high-resource scripts when the device is running on battery. This addition would significantly improve the experience for mobile users and those who rely on Firefox while on the go.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Jon]

Similar idea here: Energy - a battery saving version 

[Elle]

I really like this but on other way: I already have all security and privacy features in my network DNS, my VPN, my uBlock Origin config, and I want simply disable with one switch all pseudo privacy and pseudo security features in Firefox: all safe browsing and safe checking, privacy protection especially all filtering because I already filter all trash and defenetly I want to completely remove all unusual randomization, masking, sanitation and other things that eat many resources and only waste energy especially in mobile devices. I already create an idea here, but I still think no one understands it for years, that's actually sad.