[Q] Best ways to improve Nexus 6 battery life? topic

Currently, my nexus 6 has its boot loader unlocked and it's also rooted. It's currently running on the latest Cm12 nightly & franco.kernel. I get about 4 hours of screen on time. What are some tweaks that I can make to improve battery life? Any suggestioms will be welcomed, such as kernel settings, any flashable files, apps, etc. Thank you.:victory:

I just realized I posted in the wrong section, sorry about that.