Battery pack expansion module DIGIT DN-170120 (4×12V 9Ah) for UPS systems

Expansion battery pack module DIGIT DN-170120 contains four sealed 12V 9Ah batteries assembled in a single housing to extend the runtime of compatible UPS systems. Designed for external connection to UPS units that support battery modules, it provides additional backup capacity to keep servers, network equipment and workstations powered longer during mains interruptions and to allow orderly shutdowns. The module is intended for environments where increased autonomy and reliable power continuity are required.

Advantages

The expansion module integrates four maintenance-free VRLA batteries in a compact enclosure to deliver extended backup time without the need for battery servicing. Its sealed lead-acid chemistry ensures low self-discharge and safe indoor use. The design allows straightforward connection to supported UPS models, enabling scalable backup solutions by adding one or more modules. The module provides stable voltage output compatible with UPS systems that accept external battery packs.

Suitable for

• Extending runtime for small to medium office UPS units
• Providing additional backup for servers and network equipment
• Maintaining power to workstations for orderly shutdown during outages
• Use in IT closets, small data centers, and telecommunications cabinets

Key specifications

• Battery configuration: 4 × 12V 9Ah sealed lead-acid (VRLA)
• Intended function: external runtime extension for compatible UPS systems
• Installation: rack or floor placement depending on UPS compatibility and space
• Maintenance: maintenance-free, leak-resistant sealed construction
• Operating environment: indoor use, ambient temperature per UPS and battery manufacturer guidelines

How to use

Connect the expansion battery pack to a compatible UPS following the UPS manufacturer’s instructions for external battery modules. Ensure the UPS is powered down or follow the UPS-specific hot-swap procedure if supported. Verify proper cable polarity and secure connections before energizing. After connection, allow the UPS to recognize the additional battery capacity; the UPS management interface will typically show updated runtime estimates. Periodically inspect the module and connection points for secure mounting and signs of damage.

Usage recommendations

Install the module in a ventilated, dust-free indoor location with stable ambient temperature. Follow the UPS vendor’s guidelines for maximum number of external modules and cable routing. Do not expose the module to open flames, liquids, or corrosive environments. For optimal performance, bring the batteries to the recommended ambient temperature range before charging and perform periodic system tests to confirm expected runtime.