Battery Notification is a free and open-source program designed for Android devices. It provides a persistent notification that displays essential information about the device's battery, including battery level, temperature, charging state, battery health, charging/discharging amperage, and time remaining until fully charged or discharged (root/ADB only for Android 5.0+). The notification also features a color indicator for Android 5.0+ devices, making it easier to see battery level at a glance.

The app requires the "Receive Boot Completed" permission, which is used to restart the notification after rebooting the device. It also offers optional permissions, including access to superuser, battery stats, and foreground service, which are used to provide more detailed battery information and keep the notification up-to-date.

Overall, Battery Notification is a simple and useful tool for Android users who want to keep track of their device's battery status. With its clear and concise display of battery information, it provides a convenient way to monitor battery health and usage.