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The linked article is from August 2016. The news is that due to this research Mozilla has now removed the battery API from Firefox: https://www.fxsitecompat.com/en-CA/docs/2016/battery-status-api-has-been-removed/

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    How on Earth did a feature this stupid even make it into the browser in the first place?

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      <strike>Probably a carry over from FirefoxOS. I’m pretty sure this feature was not supported in other browsers.</strike>

      Never mind, just reread the article more carefully, apparently it is a W3C candidate recommendation. “Javascript all the things”, I guess? There’s still a possibility the impetus was FirefoxOS, though that’s just a wild guess.

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        Yeah, that makes sense. Oh, Mozilla.

        ETA: ugh. Just … ugh.

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          Chrome OS also seems like a candidate.

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          Knowing that you’re on battery would be useful to tone down animations or whatever other task.

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            That’s a job for my scheduler, not your jive-ass runtime.

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              Seriously. The user knows when their battery is low (it may be the one system monitor most users are actually in tune with). They can decide whether browsing the web with 2% battery is a good idea or not.

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              Maybe browsers could also have a “battery saving mode” that is turned off and on. Then people could mark that they want a less resource hungry web experience without exposing the battery.

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                That would unquestionably be better; but native applications that aren’t servants of the ad economy would be better yet.

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                  Jetbrains IDEs have this. Presumably it tones down indexing and background tasks… I’ve never felt the need to use it TBH

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              As a workaround in Firefox < 52, go to about:config and set dom.battery.enabled to false.

              I’m not sure if this can be worked around in Chrome. Does anyone know?

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                Is there some collection of Firefox configuration options that can/should be set to protect privacy and security?

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                  There are a couple people who actually maintain a few lists like this one: https://github.com/amq/firefox-debloat

                  but there is no consolidated thread out there (to my knowledge)