ENERSYS's 12 V, 123 Ah, DataSafe HX 12HX540-FR top terminated AGM valve-regulated lead acid battery. DataSafe HX top terminated batteries are the ideal source of power to protect vital systems. DataSafe HX top terminated batteries incorporate select design features that maximize reliability while ensuring superior performance and an excellent service life. Gas recombination technology for VRLA batteries has totally changed the concept of standby power. The minimal level of gas evolution allows battery installation in cabinets or on stands, in offices or near main equipment, maximizing space utilization and reducing storage and maintenance costs. DataSafe HX top terminated batteries deliver superior performance, occupying less space than conventional standby power batteries.