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Star Trek Alert Battery Widget represents the battery level of your smartphone and shows animated alert images depending upon battery level.
(Red alert for level less than 20%, Yellow alert for level between 20% and 50%, Green alert for level above 50% and blue alert when battery status is charging).
The app also include an activity which tells you about following details of your battery: Battery level remaining, status, voltage, health, technology and battery temperature.
To display the widget on your home screen drag the widget from your widget menu.