Vertiv PSI5-24VBATT 24V External Battery Cabinet | UPS Battery

Increase the runtime of compatible Vertiv Liebert PSI5 UPS systems with a 24 V external battery cabinet designed for infrastructure that cannot afford short battery windows. This accessory is a straightforward way to add backup capacity when the existing UPS is sized correctly for the load but needs more hold-up time for outages, maintenance events, or controlled shutdowns. In rack environments, every component has to earn its space. This cabinet is built to expand battery support without forcing a full UPS replacement, making it a practical choice for IT teams balancing uptime, footprint, and budget. It helps protect servers, network gear, and edge systems by giving them more time to ride through utility interruptions and complete graceful shutdown procedures. For organizations that treat power continuity as a service-level requirement, an external battery cabinet is a high-value addition. It supports a more resilient power architecture while keeping the deployment aligned with existing PSI5 infrastructure. When the cost of downtime is measured in missed transactions, lost sessions, or recovery effort, added runtime is not a luxury — it is insurance for the systems that matter most.