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. Prop 65: WARNING: This product can expose you to chemicals including: Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov - Compatible Products: APCRBC115; SMX1500RM2UC; SMX1500RM2UCNC; AP9625 - Cross Sell Products: ECO1PH1YFW03; W1YONSITENBD-SD-02; W1YONSITENBD-SD-03; W1YONSITENBD-SP-02; W1YONSITENBD-SP-03; W3YONSITENBD-SD-02; W3YONSITENBD-SD-03; W3YONSITENBD-SP-02; W3YONSITENBD-SP-03; WADV1PEAA; WASSEMUPS-3R-SB-00; WBEXTWAR1YR-SP-02; WBEXTWAR3YR-SP-02; WEXTWAR1YR-SP-02; WEXTWAR3YR-SP-02; WITEDS3YR-SP-02; WITEDS5YR-SP-02; WITEDS5YR-SP-03; WMD1YOSOFW-SD-02; WMD1YOSOFW-SD-03; WMD1YOSOFW-SP-02; WMD1YOSOFW-SP-03; WMD5YOSNBD-SD-02; WMD5YOSNBD-SD-03; WSTRTUP-SB-00; WUPGONSITEFW-SB-00