So I went back to Android N after running O

After having a phone with exceptional battery life and seeing that slashed down to 20% to 50% by running Android O, I've went back to N. I just hope that O due to its excessive charge/discharge/hot cycles has not permanently damaged the battery. The issue has been around for quite some weeks now and I just can't reliably expect the battery to be alive even half way through a day nevermind after the end.

UPDATE:

After going back to Android N roughly 2 days ago I can tell everyone it was the right move.

1. The phone is now always cool, even when charging
2. UI performance is better and snappier
3. Most importantly, the battery lasts MUCH longer now. In a period that would have completely drained my battery on O has only used 25% on N. Night and day!

UPDATE 2 - July 29th

Of course, DP4 came out within milliseconds of me going back to N... Anyway, last night I went back to DP4 after reading that "Battery issues have been fixed". So far it seems like it has. I lost exactly the same amount of battery late evening and overnight as I did on N. Long day today, so I'll see if it holds up during the day.