Battery 100% Alarm - a Very funny application which resembles more of a alert system for your battery. Although at first glance it seems useless, we should not forget the fact that most smartphones do not have built-in notification system on the discharge of the battery, and if they have that without any voice acting. This app will alert you and vibration and melody, and even backlit, you decide what to include and what not. As you select at how many percent should send alerts.