Vertiv Liebert PSI5 Lithium 500VA 1U Rack UPS | Short Depth, 120V

Maintain uptime for space-constrained infrastructure with the Vertiv Liebert PSI5 Lithium 500 VA UPS. Built in a short-depth 1U rack/tower form factor, it fits where deeper chassis cannot, making it a strong fit for branch closets, edge racks, and compact IT enclosures. The lithium battery design is well suited to environments that value long service life and reduced maintenance compared with traditional battery systems. With 120 V input and output, this model is designed for standard North American power environments and for protecting low-power critical loads such as network switches, security appliances, and small communications equipment. The 14.6 lb chassis keeps installation manageable, while the rack/tower flexibility supports either shelf-style placement or rack integration depending on the site. This UPS is not about excess capacity. It is about preserving uptime in the places where every rack unit matters and every minute of graceful shutdown counts. For distributed IT teams, that combination of compact size, lithium chemistry, and Vertiv power engineering makes it a practical choice for protecting essential systems without overbuilding the power layer.