Akip
I think this article does a better job at explaining. https://www.hackster.io/news/a-high-frequency-blast-of-sound-could-push-future-batteries-to-a-nine-year-lifespan-ease-recycling-944c15f50f9f
From what I understand with this new battery, it's both easier to disassemble the lithium part for recycling and additionally the rusting MXene film used can be de-rusted with sound waves. Therefore when performance drops it allows the "electrical and electrochemical performance to be recovered".
they are great to prevent fingerprinting, you can test your browser here, but will require some fiddeling e.g. enable java for content sites like YouTube or they don't work.
are you sure you aren't using any addons that influence it? like Jshelter or canvasblocker?
I would say the comment for mullvad browser just to use librefox is dangerous and wrong, the no script from mullvad browser served me well by exporting it to other browsers even to mobile.