Vertiv Liebert GXT2 Replacement Batteries

Replacement batteries for Vertiv Liebert GXT2 UPS systems

The Liebert GXT2 is a double-conversion (online) UPS family originally sold under the Emerson Network Power brand and now part of Vertiv. Like every battery-backed UPS, its runtime depends on healthy internal batteries. When backup time drops or the unit reports a battery fault, the cells inside the UPS (or its external battery cabinet) need replacing. The batteries in this collection are compatible replacement kits matched on voltage, capacity, terminals and connectors.

Battery type and how a GXT2 kit scales

GXT2 systems use sealed lead-acid (SLA / VRLA) batteries, typically 12V cells wired in series strings. Smaller models use a single internal string while larger and extended-runtime models stack additional cells or use external battery cabinets, so the total number of cells and the kit's overall voltage rise with the model's capacity. Because the count varies across the range, the correct kit is defined by your exact UPS model, not by a single battery number. The specifications for each kit are listed on its own product page.

Identify your kit by exact model

Match the model number printed on your UPS or battery cabinet label exactly. The GXT2 range includes variants such as GXT2-700RT120, GXT2-1000RT120, GXT2-1500RT120, GXT2-2000RT120, GXT2-3000RT120, their 230V counterparts, and battery-kit part numbers like GXT2-7A48BATKIT, GXT2-9A48BATKIT and GXT2-48VBATT. A small change in the suffix can mean a different cell count or voltage, so confirm the full model string before ordering. Each product in this collection is mapped to a specific GXT2 model and shows its own voltage and amp-hour rating in the product grid.

OEM vs aftermarket

You can buy battery kits directly from Vertiv (OEM) or choose a compatible aftermarket kit. The kits in this collection are compatible replacements matched on voltage, capacity, terminals and connectors. They do not carry Vertiv branding and are not Vertiv-authorized parts. The UPS electronics do not require an OEM-branded battery to operate; they require cells that meet the correct voltage, capacity and physical fit.

Battery lifespan

Sealed lead-acid UPS batteries typically last 3 to 5 years. Heat is the biggest factor: as a rule of thumb, battery life is roughly halved for about every 8°C of sustained operating temperature above 25°C. Keeping the UPS in a cool, ventilated location and running periodic self-tests helps you reach the upper end of that range.

How to replace the batteries

The GXT2 is a rack/tower online UPS, so its batteries are designed to be hot-swappable: the front battery tray or external cabinet can be replaced while the UPS keeps powering the load. General steps:

1. Order the kit that matches your exact GXT2 model.
2. Remove the front bezel and battery tray retaining screws.
3. Slide out the old battery tray or string.
4. Transfer harness/connectors if required, then insert the new kit.
5. Secure the tray, refit the bezel, and run a battery self-test to confirm.

Hot-swapping applies to online/rackmount UPS lines like the GXT2 and to comparable Smart-UPS rack units. Do not attempt hot-swap procedures on small desktop or consumer units (for example Back-UPS-class products): power those down before servicing. If you are unsure, shut the UPS down and disconnect the load before replacing the batteries.

FAQ

How do I know which kit fits my UPS? Match the exact model number on the UPS or battery cabinet label to the matching product in this collection. The product page lists that kit's voltage and amp-hour rating.

Are these Vertiv batteries? No. They are compatible replacements matched on voltage, capacity, terminals and connectors.

How often should I replace GXT2 batteries? Plan on every 3 to 5 years, sooner if the UPS runs warm or reports reduced runtime or a battery fault.

Can I replace the batteries without shutting down? On the GXT2 (an online rack/tower UPS) the batteries are hot-swappable, so the load stays protected during the swap. Follow your unit's manual.

Do I need OEM-branded batteries? The UPS does not require OEM-branded cells to function; check your service contract if you have one. Compatible kits are not Vertiv-authorized parts.

Model names and trademarks belong to their respective owners. UPSPLUSBATTERY.ca is not affiliated with, endorsed by, or authorized by the manufacturer; aftermarket batteries are compatible replacements.