Vertiv Liebert PSI5 800VA Tower UPS 720 W | Desktop UPS, Enterprise

Keep essential equipment running long enough to ride through short power events with the Vertiv Liebert PSI5 800. This compact tower UPS delivers 720 W of output capacity and 800 VA of backup power, giving small IT environments a practical layer of protection for network devices, workstations, and edge systems. Pure sine wave output on battery helps maintain compatibility with sensitive electronics and active PFC power supplies, reducing the risk of nuisance shutdowns or power-related instability. The rotatable LCD monitor makes status checks straightforward whether the unit is placed on a desk, under a counter, or beside a small equipment stack. For teams that need visibility without adding rack complexity, that matters. The PSI5 800 is a strong fit where uptime is important but space is limited. It provides a measured balance of capacity, runtime, and footprint for branch offices, retail locations, and small server areas. Compared with lower-cost desktop UPS units, it offers the power quality and control expected in environments where even a brief interruption can disrupt transactions, connectivity, or local operations.