Battery Eater is a testing tool intended to reveal the potential of a notebook battery pack. Battery Eater can measure the minimum operation time of a notebook (when all power-saving options are disabled) under conditions close to the maximum workload (Classic mode). Battery Eater will show a result closest to the maximum possible in the "Idle" and in the "Reader's Test" mode (when all power-saving options are fully enabled).

Battery Eater also draws the battery discharge graph where you can see the dynamics of the charge level.