The CyberPower BP48VP2U01 is a rack/tower convertible Extended Battery Module (EBM) that extends battery runtimes during power outages and is designed for the following Smart App Sinewave UPS systems: PR750RTXL2U and PR1000RTXL2U.This EBM takes 2U of rack space and can be installed in either a rack or tower configuration to match the UPS form factor. Battery equalization technology improves battery life, and toolless battery panel access makes battery replacement fast and simple.