Battery mark is a great tool that allows you to evaluate overall status of power system in your laptop and test it in the most extreme conditions. Main features: - execution of quick testing to show battery ability during time of discharge by 4-6% - full testing of laptop power system with displaying of a graph of discharge - the ability to run calculating process to make a full load of each processor core - simulation of a load on the disk subsystem, including reading and writing data - calculation of the final mark to compare laptops or batteries - making of a report for use or research later