Ok, this is just really weird. If I'm using my phone and my battery gets low when I'm using Firefox or any other app, the powering off screen comes up and says battery is at 0%. It shuts all the way off. I give it a few seconds, hold the power button so it turns on, and it boots up just fine. I check the battery and it shows up between 40 and 50 percent... The app I was using is still in the recent app list. I don't have any battery savers installed, but I DO have that turbo charger which has been making a slight hissing sound... Any opinions on this? Would it be caused by the charger? Should I get a replacement charger?