BP36V15-2U rack/tower external battery pack offers extended battery runtime when used in conjunction with expandable 36V rack-mount and tower UPS systems. Includes heavy-gauge cabling with high-current DC connector for safe, simple installation. Included mounting accessories support 2U rack-mount installation in 4-post racks. Options for 2-point front-rail mounting, 2-post center-mounting, wall-mount and upright tower installation available.Compatible with SMART1000RMXL2U, SMART1200XLHG, SMART1500RMXL2Ua, SMART1500XL, SMX1200XLHG, SMX1500XLRT2U and other UPS systems that specify the use of this battery pack.