You could look into using scripts with tools like acpi
or upower
. A simple shell script checking battery levels every few minutes could work: if it’s below 20%, play a sound. Schedule it with a cron job or a systemd service for consistency. I'm no script guru, but there's lots of good examples online!
That's a real bummer about Mozilla and uBlock Origin clashing. It's weird 'cause their values seem pretty aligned with privacy and user control. Hopefully they can smooth things out soon—users like us just want our browsing to be smooth and ad-free!