The Vertiv Liebert PSI5 Lithium-Ion Short-Depth UPS is the newest member of our lithium-ion ups family. This 3 kVA UPS, with a convertible rack/tower setup makes it a flexible option for any information technology department or data center application. By choosing a UPS with lithium-ion batteries, our customers and partners are saving up to 50% total cost of ownership (TCO) over the lifetime of the equipment and can rely on up to 3x longer runtime than comparable VRLA models.