Easily connect this external battery pack to an existing APC Smart-UPS X to instantly increase the amount of battery runtime to connected devices during a power outage. Please refer to your APC Smart-UPS X manual to confirm compatibility with this external battery back. The battery pack offers easy plug-and-play installation onto an operating APC Smart-UPS. ensuring power availability while runtime capacity is added. Through the APC Smart-UPS’ intelligent battery management and precision charging. the battery pack maintains the UPS system’s performance. reliability. and useful life. The APC battery pack provides scalable runtime to the APC Smart-UPS X. allowing multiple battery packs to be quickly added if the need arises. The battery pack operates equally in tower configuration. standing next to an APC Smart-UPS. or in rack-mount configuration. mounted below the UPS. Package Includes APC SMX48RMBP2U External Battery Pack. installation guide. and rack-mounting brackets.