A complete description of this product is coming soon! Please call with any questions about this item. Thank you for your patience!EBP36XL external battery pack for E750RM2U, E1000RM2U, E1500RM2U and E1500RMT2U Model: EBP36XL Battery Pack Buy this productApplications: Extends battery backup runtimeWarranty: 3 Years Parts & Labor Including Batteries Description:The EBP36XL Battery Pack is a 36VDC14.4AH battery pack with internal charger that extends runtime on the E750RM2U through E1500RM(T)2U units. Features: Internal AC charger rechargesbattery pack quickly after discharge Multiple battery packs may be daisychained together for unlimited runtime AC and circuit breaker LEDs display status of AC charger and battery pack DC breaker Rotating LED panel to match orientation for horizontal/rack, tower or wallmount units Standfor a tower configuration as well as fittings fora 19-inch rack 23-inch rack and wallmount kits(optional) Three-year parts and labor warranty Battery: User replaceable battery? YesNo. of internal batteries: 6Replacement battery description: 12 Volt 7.2 Amp HourMMEBP36XL