The CyberPower BP48VP2U04 is a 48VDC Extended Battery Module (EBM) designed to extend runtime for compatible CyberPower Smart App Sinewave UPS systems. Featuring sixteen 12V/6Ah sealed lead-acid batteries, this 2U rack/tower convertible module provides reliable backup power expansion for enterprise servers, corporate servers, network devices, and VoIP installations. It includes a built-in charger, Fast Charge Technology, Battery Equalization Technology, hot-swappable user-replaceable batteries, and toolless battery panel access for convenient maintenance.