It is not crap, it has just been poorly explained. There has been much comment on the forums regarding battery performance and the sudden death syndrome (rapid discharge from 30% to <10%). With FW 1.3.0.0, DJI has remodelled the battery profile and, it is my surmise, to address these issues. For your smart battery to correctly use this new profile and display the correct max power and percentage discharge, it is necessary to carry out the recalibration (described elsewhere) on each battery.