Battery issue (+WiFi drops) since updating to e/OS v3.2

this one neither? Advanced Privacy Notifications - #2 by tcecyk

The batter drains irrespective of wifi, network, aeroplane, bluetooth, NFC (etc) settings being on or off.

severe. There’s a few on-device and off-device tools to look into it. I’m a fan of battery-historian (example threads, mostly fairphones), but it’s developer tooling.

I saw some mentions of “increased drain” at the 3.2 feedback thread, but not specifically for the Murena One - but as you said, it started with 3.1. Discourse can do in-topic search per thread, you might want to go through them