Vertiv PBRGXT34X5K208V GXT3/GXT4 5kVA 208V Replacement Battery Module
Overview
The Vertiv PBRGXT34X5K208V is a replacement battery module designed for the Liebert GXT3 and GXT4 UPS platforms operating at 208V in the 5kVA power class. Deploying a genuine factory-new battery module — rather than a third-party alternative — preserves the runtime characteristics and monitoring accuracy your UPS management software expects. If your GXT3 or GXT4 unit is flagging battery health warnings or approaching its service interval, this is the factory-matched replacement path.
The PBRGXT34X5K208V targets critical power continuity in environments where a degraded battery is not an option: data closets, surveillance head-end rooms, access control panels, and mid-size server rooms where 5kVA capacity at 208V is the installed standard. Swapping in a matched module keeps your runtime estimates valid and avoids the calibration drift that comes with mismatched third-party cells.
Key Considerations
- Platform match: Verify your UPS is a GXT3 or GXT4 model rated at 5kVA and wired for 208V input before ordering — the PBRGXT34X5K208V is voltage- and platform-specific. Installing the wrong battery module can void the UPS service agreement and produce inaccurate runtime readings.
- Genuine replacement: Factory-new cells sourced through the Vertiv channel mean the chemistry, discharge curve, and impedance signature match what the GXT3/GXT4 battery management circuit expects — critical for accurate runtime estimation under load.
- Service interval planning: Most sealed VRLA batteries in this class carry a 3–5 year service life under normal thermal conditions. If your existing module is near or past that window, proactive replacement avoids unplanned downtime.
Frequently Asked Questions
Q: Which UPS platforms is the PBRGXT34X5K208V compatible with?
A: Based on the product designation, this module is designed for Vertiv Liebert GXT3 and GXT4 UPS systems in the 5kVA capacity range operating at 208V. Confirm your specific model number against Vertiv's compatibility documentation before ordering.
Q: Is the PBRGXT34X5K208V a drop-in replacement requiring no special tools?
A: Vertiv GXT-series battery modules are generally designed for hot-swap installation, but specific installation procedures depend on your UPS revision. Consult the GXT3/GXT4 installation guide for your unit's battery replacement procedure.
Q: Can a third-party battery be used instead of the PBRGXT34X5K208V?
A: Third-party cells may physically fit but often introduce calibration mismatches with the GXT battery management circuit, leading to inaccurate runtime estimates and potential warranty implications. The factory-matched module is the lower-risk path for production systems.
Q: What is the warranty on the PBRGXT34X5K208V?
A: Warranty terms for Vertiv battery replacement modules vary by region and purchase channel. Contact your Vertiv channel representative for the applicable warranty coverage on this SKU.
The PBRGXT34X5K208V is a platform-specific battery module — the 208V designation matters here. I've seen integrators order the 120V variant by mistake on mixed-voltage deployments and end up with a module the UPS simply won't recognize. Double-check your GXT3 or GXT4 input voltage configuration before the purchase order goes out.
Technical Highlights:
- Platform specificity: Matched to GXT3/GXT4 5kVA at 208V — the battery management circuit in these units reads cell impedance at startup; a matched module means accurate runtime estimates from day one, not a 72-hour calibration cycle.
- Factory-new chemistry: Genuine Vertiv cells carry the same discharge curve the GXT firmware is tuned for — third-party replacements often ship with subtly different chemistry that causes the runtime display to read 10–20% optimistic under load.
- Service life planning: VRLA batteries in this power class typically need replacement every 3–5 years under normal ambient temperatures (20–25°C); thermal environments above 30°C can cut that in half — factor that into your maintenance contract if the UPS lives in a warm IDF closet.
Deployment Considerations:
- Before ordering, cross-reference the PBRGXT34X5K208V against your GXT unit's serial number on Vertiv's compatibility matrix — the GXT3 and GXT4 share similar form factors but may have different battery bay connector revisions.
- Hot-swap capability on GXT units means you can replace the battery without dropping load, but only if the UPS is on utility power at the time — attempting a swap during an active outage is not supported and risks load interruption.
This module is the right specification for facilities teams managing a standardized GXT3/GXT4 208V fleet in mid-size data rooms, surveillance head-ends, or access control infrastructure where proactive battery management is part of a documented maintenance schedule.
