[How to use] - Set the reminder song. - Connect the charging cable. - You do not need to run the app when charging. It will automatically notify you when charging is complete. - Disconnect the power cable when charging is completed or close the window to close the notification song automatically. [function] - Notification song setting (with ringtone) - Battery alert level setting - Volume control - Vibration - Set the 'Do Not Disturb' time. - Voice notification (TTS). - Battery status warning