My 5ii drains about 0.5%-1% per hour with 0 screen time with 5g turned off. If I use it I get about 5h of SoT maximum. The battery is at 70% integrity according to accubattery even though I have had charging pinned to 80% max since I got it 2 years and a bit ago. My shitty Nokia did battery on battery integrity than that.
Sometimes if I have little signal, it will drain 5% per hour because I guess they just set it to "retry as often as possible for as long as possible and fuck battery life."
In contrast, my girlfriend's A52 can go the entire night and lost about 3% battery. She uses it more than me and regularly has 50% left at the end of the day to my 10-15%. If we are both in the same low signal, hers will last 5x as long as my 5ii.
If I use it at all for anything besides a bit of messaging I have to charge it around 16h.