APC Smart-UPS X SMX120RMBP2U 120V External Battery Pack | Rack/Tower — SMX120RMBP2U

Keep critical loads online longer when the primary UPS battery bank is not enough. The APC Smart-UPS X 120V External Battery Pack is designed to expand runtime for compatible Smart-UPS X systems in rack or tower environments. For teams protecting servers, storage, network gear, and edge infrastructure, added battery capacity can be the difference between a controlled shutdown and an abrupt interruption. This external battery pack is built for deployments where uptime matters and replacement windows are tight. It supports a cleaner power continuity strategy by extending the available battery reserve without changing the core UPS platform. That makes it a practical fit for data closets, branch offices, and distributed IT sites that need more ride-through time during utility events. As part of the APC Smart-UPS X family, it aligns with enterprise power protection workflows already standardized around APC hardware. The rack/tower design gives flexibility in mixed environments, while the 120V configuration fits common North American power infrastructure. For procurement teams, it is a targeted way to increase resilience without overbuying a larger UPS than the site requires. Ideal For Extending runtime for rack-mounted servers during short utility outages Adding battery reserve for branch office network closets Supporting controlled shutdowns in edge compute deployments Bridging critical loads until generator power comes online Why This Product 1 Adds runtime without replacing the UPS chassis 2 Supports rack or tower deployment flexibility 3 Fits 120V enterprise power environments 4 Designed for APC Smart-UPS X compatibility