Full Battery Alarm is a free Android app developed by Replay Creation. It is a unique app that alerts the user when their mobile phone's battery is fully charged. With this app, there is no need to constantly check the battery status. The app has three different notification settings: ringtone, vibration, and light blink alert. The user can choose their favorite ringtone or select vibration or light blink alert if they are in a meeting.

Full Battery Alarm also has several new features, including Theft Alarm, Low Battery Reminder Notification, Custom Battery Level Notification, Device Temperature High Warning Notification, Flashlight, Battery Statistics, Choose Color Theme, and Language support for Arabic, Chinese, Czech, Danish, Dutch, Esperanto, French, German, Hungarian, Indonesian, Italian, Kurdish, Polish, Portuguese, Russian, Spanish, Swedish, and Turkish.

The app is user-friendly with an adjustable volume of the ringtone, remaining charge time, and automatic start on reboot. Once installed, the app does not require re-arming and will automatically sound an alert once the battery is fully charged. However, users with Android 8.0 and above should follow a few steps to ensure the app works properly. Overall, Full Battery Alarm is a smart way to protect your phone battery.