This app was mentioned in 2 comments, with an average of 1.50 upvotes
Get a hibernation app instead of the bixly routine to turn on power saver when closed. The routine actually doesn't work. It works but not as good as a hibernation app does.
I use this one. It says it isn't build for the current android version, but it's fine. It works.
https://play.google.com/store/apps/details?id=com.root.battery.saver.sleep.hibernation
Get Facebook lit instead of Facebook. Facebook is a heavy battery eater. If you have Facebook messenger also replace it with the lit version.
I have bixley routines for these things: data and location turned off when at certain locations like home or work. When I open messages it turns data on for photos to send or download. I do this for apps that need location too. It's my work around.
I have power saver to turn on when I'm gaming (excluding games that need location like Pokemon GO) or streaming.
I get between 16‐18 hrs of battery. Depends on my phone usage.