Err… I hate Samsung Galaxy S II battery fully charged notification sound during night while I am sleeping. Come on, who is the one that come out this idea? And there is no way to turn off the fully charged notification sound in the settings. Hmm… There is a way to disable it totally by changing the system file. But that will require some Android technical knowledge ~ Android Debug Bridge (adb). Not so suitable for new comer which don’t know anything about it. No worry, Battery Charged Silencer comes to rescue…