Make sure to download AccuBattery and check to see if something is taking up more battery
https://play.google.com/store/apps/details?id=com.digibites.accubattery&hl=en_US&gl=US
The last full session I have is almost 7 hour SoT from 100% to 21%, though that's before I updated to the June update. I can update again when I have the latest SoT.