The Vertiv Liebert PSI5 48V External Battery Cabinet (PSI5-48VBATTTAA) is a TAA-compliant, 9 Ah lead-acid UPS external battery enclosure, which provides longer battery run time for connected devices. It is compatible for PSI5-1500RT120 and PSI5-2200RT120 UPS systems. Its TAA compliance ensures that this battery is made in the US or TAA-compliant countries. It is designed for government offices and government-affiliated offices. The battery comes with a three-year factory warranty.