Interactive Digital Communication: The battery transmits instantaneous diagnostic data to the charger including state-of-charge, calibrated capacity and cell temperature, as well as critical indentification and history data including cell formulation, battery age, number of past charge cycles and rated capacity. 4 position, 1 hour sequencing fast charge. Automatic balance and rejuvenation. Lifesaver maintenance mode. Cold battery safety mode. Future technology programmable. Auto line select. PLM (power loss memory). Power interrupt alarm.