Extend backup runtime where it matters most with the APC Back-UPS Pro external battery pack. Designed for compatible 1,500 VA Back-UPS Pro models, this add-on battery gives you more time to ride through outages, stabilize short power events, and shut systems down cleanly when needed. For infrastructure teams, the value is straightforward: more runtime without replacing the UPS. That means better protection for edge servers, network switches, storage devices, and critical desktop systems that depend on a stable power window. In branch offices, small server rooms, and distributed IT environments, an external battery pack can be the difference between a graceful shutdown and an abrupt interruption. This APC battery pack is a practical fit for organizations that want to preserve the investment already made in Back-UPS Pro hardware while improving continuity. It supports a more resilient power profile for environments where uptime, data integrity, and orderly shutdowns are non-negotiable. When the load is important enough to protect, the battery capacity should match the job.