I want to ask, I have a Galaxy S3, how much battery do you have when you're about to sleep? How often do you charge your phone? Once like every night or in the mid-day also? I'm curious because normally when I go to school, I don't use my phone often so when I come back, I still have loads of battery maybe 90% at 5PM. And I go to sleep with about 15% (yes I use my phone alot) at 11PM. Also when on holidays or weekends, I tend to use my phone through out the day so I'm already at about 40% at 3-4 PM which is kind of annoying. So I want to ask how much battery do you have? And are you using any 3rd party battery (extended one) or any spare?