CyberPower BP48VP2U02 external battery module significantly extends runtime when used with a compatible CyberPower UPS. With rugged, industrial-grade metal construction, it can be installed even in demanding environments. FEATURES Rack/ Tower Convertible Configurations Sealed Lead-acid Batteries Built-in charger for External Battery Module(EBM) Hot-swappable Batteries Daisy-chain Expansion Metal Housing FEATURE FOCUS Battery Hot-swap With battery hot-swap solution, the batteries modules can provide service continuity in all situations while keeping connected mission-critical equipment powered and fully operational. Achieving ultimate peace of mind that high availability and maintenance flexibility will never be compromised during battery replacement or other upgrades