Once again it happened. I went to use my N900 just to notice the battery has went dead without me knowing. I'd like to see an application that would sound an alarm when the battery level goes critical. The alarm should go on for a while unless you confirm that you are aware of the problem by pressing some "ok" button for instance. It should be selectable to work even when device is set to silent mode. Or is there already some app available that would do this for me?