I'm looking through forums right now to find out if my 6a is faulty. This thread somewhat confirms that my battery is sub-par... The battery seems to be maybe 60% or probably less of what I read here which really sucks. I'll have to flash it back to the stock OS and send it back I guess. It's not as bad as OP, I lose maybe 30% in 2-3 hours of light use.
What I don't understand is that the battery usage tab in the settings shows percentage of battery use per app, when my battery is at 50%, the total percentage used by apps showed is maybe 1/3 of the battery percentage lost. Is this normal? For example, Before charging my phone just now the battery was at maybe 30% but adding up the percentage from the list of apps shown it came to about 28%.
Phone does get warm sometimes, battery drop rate fluctuates a lot and is very much not affected by whatever I'm doing on it.
Screen brightness is usually around 75%, I have 2 messaging apps and FairEmail syncing in the background, wifi is deactivated when not in use, I even use battery saver when I'm below 50% to try and minimize battery loss, it helps somewhat.