I just tested mine, and it has to hit 90%.If I disconnect the charger at 89%, the stats stay.So it might be the same for the 80% limit, that is has to hit 80%.
I have mine set to 90% limit, and it does reset the stats when it hits that.But i like the idea of having an option of choosing a different time range.
I just tested my Zenfone 8, which has now been charged 3 times. For reference, this is from a Sony Xperia 5 II that has been used for 7 months: So in my case, it definitely seems low.
