Emulate Full Battery Charge Now before you guys disvote this question, let me explain. I've been messing with lithium polymer batteries for 8 years (I work in a shop repairing electronics) and I have studied the behavior of Lithium Polymer batteries. 

It kinda bugs me when my phone automatically shuts down when battery level is said to be 0%. In these moments I usually am finishing almost done watching a video or writing up a text to someone and my phone completely interrupts all operations and shuts down. I know for a fact that as when it shuts down there still is enough power left to run the phone for another 4 emergency minutes. 

Is there a way I can emulate the operating system into thinking I have a higher percentage of power left so that it wouldn't shut down right away? I know this sounds risky, but I am aware of what's really happening here. My system is Nexus 4 running android 4.4 (fully rooted).
From what it sounds like, you not only want it to show a higher percentage but also 'use' this last little bit of juice in the battery.  Technically you could just modify the icon to show full all the time or be slightly above the real level, but that's just the icon's look.  I think to accomplish what you're trying to do you will have to modify the ROM yourself.  If your savvy in this field, you can look for some open source ROMs, modify it, and see if it works.