Battery Eater Pro is a program that allows you to determine the maximum operating time of your notebook in standalone mode. To do this, you only need to charge the battery as much as possible, then start the program and disconnect the notebook from the network. The program will automatically detect the change of the power supply and start working immediately. To know the minimum battery life, you will need to set the maximum values in the screen settings, disable the computer from going to sleep when the screen is idle for a long time, turn off the screen, etc. However, this value is exactly the same as the actual load on the battery. Thus, you can learn only the minimum possible time of productivity of the laptop at independent work. To calculate the more real parameters, you need to select the appropriate Reader mode or the Simple mode. Testing will only stop when the system is completely shut down. After that you will be able to see the report saved in the report.html file, which will be available after the next download. In the report you will find not only the standalone operating time, but also all the necessary data about the processor, battery type, manufacturer and much more.