I have an issue with my battery. Sometimes it starts to drain the battery VERY fast, like 80% in 20 minutes, then the battery dies and the phone turns off. But if I turn it on it starts with the ammount of battery it was before the crazy descharging, and the phone works as usual.
It is a pain in the ass because every night it happens, so I cannot set an alarm. Sometimes it happens in the day too.
It is upgraded to android 4.0.4
For some reason I couldnt upload the picure of the battery status, so I uploaded to google docs: