This APC Smart-UPS battery pack, in conjunction with the Line-Interactive UPS SMX, is designed for IT managers or network administrators to maintain uptime, data transfer, and continuity during extended power outages. This 120 V DC extended run SMX battery pack is compatible with SMX Smart-UPS extended run models over 2 kVA. The SMX battery pack is easy to install via plug-and-play on an operating APC Smart-UPS X, ensuring power availability while increasing runtime capacity. The lead-acid battery pack has a 2-year warranty. The Smart-UPS battery pack can be used in a tower configuration next to an APC Smart-UPS X or in a rack-mount configuration below the UPS. The pack includes the APC SMX120RMBP2U External Battery Pack, an installation guide, and rack-mount brackets.