The CyberPower's BPE72V60ART2U battery pack significantly extends runtime during power outages for smart app online 2k/3k RT models. The BPE72V60ART2U external battery pack houses twelve 12 V 9 Ah batteries, connected serially in two strings of six batteries. It is designed to match the appearance of the smart app online UPS RT models and can be similarly mounted in 2U rack or tower configurations. A battery data link transmits the unit's diagnostic vitals to the UPS display for real-time monitoring; the heavy gauge power cord, adapted with Plug-and-Play DC connectors, permits the battery pack to be easily "hot-swapped", ensuring continuous operation of critical systems during normal UPS maintenance. Rugged, industrial-grade metal construction - meeting the same standards as the UPS models - allows for installation in demanding environments.