Vertiv GXT5-EBC288VRT4U 288V External Battery Cabinet
Overview
The GXT5-EBC288VRT4U is a 4U rack-mount external battery cabinet (EBC) designed to extend the runtime of Vertiv Liebert GXT5 UPS systems in data center and critical infrastructure deployments. Weighing 189.6 lb fully loaded and occupying 4U of rack space (6.8" H × 16.9" W × 26.8" D), this unit adds a valve-regulated lead acid (VRLA) battery string at 288V to push backup runtime beyond what the base UPS can deliver on its own — the practical choice when your UPS runtime requirements exceed the internal battery capacity of an 8kVA or 10kVA GXT5 unit. The GXT5-EBC288VRT4U supports auto-detection of external battery cabinets, meaning the UPS recognizes the added capacity without manual configuration steps. The Liebert GXT5 platform also delivers battery health status monitoring and replacement date prediction through its intelligent battery management, giving operations teams early warning before a battery reaches end-of-life — not after a runtime failure surfaces it.
Compatibility
This external battery cabinet is engineered exclusively for two Liebert GXT5 UPS models: the Liebert GXT5-8000MVRT6UXLN (8kVA) and the Liebert GXT5-10KMVRT6UXLN (10kVA). Do not attempt to pair this EBC with other GXT5 variants, earlier GXT generations, or third-party UPS systems — the 288V bus voltage and auto-detection protocol are specific to these two units. If your deployment uses a different GXT5 capacity (e.g., 5kVA or 6kVA), verify the correct EBC model number in the Liebert GXT5 compatibility documentation before ordering.
Installation Notes
Operating temperature range is +32 to +104°F (0 to 40°C) — standard data center ambient conditions, but worth confirming in hot-aisle/cold-aisle containment setups where local rack temperatures can spike above 40°C. The battery chemistry is valve-regulated, non-spillable, and flame-retardant lead acid, which satisfies most commercial building codes for indoor battery installation without special ventilation permits. At 189.6 lb, plan for at least two people and appropriate lifting equipment when racking this unit — verify your rack's weight rating before installation.
