Any way to kill a crashed app on a non-rooted CM11s device?
Edit

Settings > Apps > Running

Once here, you can manually kill the app's processes. Also, there is a button at the top called "Show Cached Processes". You can also remove the cached processes from there.

Note: Removing the cached processes will kill the (cached) process of course, but the next time you launch the app, it will again call the necessary initialization functions to work, using more clock cycles. It is preferred not to kill the cached processes. But if you there is an app that's behaving weird, then go ahead and kill it!

Original Comment

open the app and hold press the back button... it should kill the app... also, why not disable the app that's draining your battery?