Just to give you a bit more info. I am on 20% right now, with 7hrs 3 mins of screen on time. 1 day, 9hrs and 48 mins phone idle. not charging in between.
Before installing my current system I would be lucky to get the day, i would charge my phone every night.
microG has been a blessing, for me everything works (signal, whatsapp, banking apps) just as if i had gapps installed and the battery lasts roughly double.