The Vertiv Liebert GXT5-36VBATKIT is a genuine hot-swappable internal battery kit designed for Liebert GXT5-500LVRT2UXL, GXT5-750LVRT2UXL, and GXT5-1000LVRT2UXL UPS systems. Built with non-spillable VRLA (valve-regulated lead-acid) battery cells, this kit delivers 36V DC output at 9 Ah capacity, restoring full backup power to compact, low-voltage GXT5 UPS installations.