If you are among the many who do not come with the smartphone at the end of the day and are content to attack the device the first outlet available, can probably be of interest to the app developer China S4BB.
BatteryWatch is called, is a very popular free software users BlackBerry for some time and has made its appearance on the Android Market. Its purpose is to monitor the consumption of these smartphones, giving the user a complete analysis of performance, with lots of charts and other relevant numerical data such as temperatures and more. The application also provides a handy voice notification to alert you when the phone is low, or when it has reached the highest office and you can pull the plug.
The application works in the background and is compatible with both Android 2.1 and above that with the new BlackBerry OS 7.0 up to the previous versions.