I think games destroyed my Note 2 battery. I often played games for hours straight while charging. Last Sunday, I let the phone pluging over night without running any app or game, but next morning my phone was blazing hot so I had to let it cool down. Half hour later I tried reboot it but fail to see any logo. Then I took the dead phone to shcool and borrowed friend's mpj backup battery, swapped it, and everything worked perfectly again. Now I have ordered a new battery online. I am not sure if playing games while charging could destroy the battery, if so, i swear wont do it again.