The Vertiv Liebert GXT5LI-48VBATKIT2 is an internal replacement battery kit designed for Vertiv Liebert GXT5 1500 to 3000VA Lithium-Ion Online UPS - GXT5LI-1500IRT2UXL, GXT5LI-2000IRT2UXL, GXT5LI-3000IRT2UXL . This online UPS offers highest level of power conditioning and battery backup in server rooms, network closets, and other edge or distributed IT locations. Lithium-Ion batteries require fewer battery replacements and last up to 3x as long as traditional VRLA batteries reducing maintenance, labor, and replacement costs. This Liebert GXT5 UPS includes an automatic and manual self-diagnostic test feature.