System on my old laptop had somewhat broken battery indicator in systray, so I ended up using simple HTML page polling / listening to navigator.battery changes

System on my old laptop had somewhat broken battery indicator in systray, so I ended up using simple HTML page polling / listening to navigator.battery changes [0] and displayed it, even in a "graph" form (in fact, just didn't redraw old values, so it was a side efffect). That worked pretty well, but then whole API became obsolete because of fingerprinting abuse. Ah, days of yore. [0] https://developer.mozilla.org/en-US/docs/Web/API/Navigator/battery https://developer.mozilla.org/en-US/docs/Web/API/Navigator/b...