Rack/Tower Convertible Configurations Sealed Lead-acid Batteries Built-in charger for Extended Battery Module (EBM) Hot-swappable Batteries EBM Expansion Capability Metal Housing BP48VP2U02CyberPower 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.Battery Hot-swapWith 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 Features Compatibility PR1500ERTXL2UPR2200ERTXL2UPR3000ERTXL2U Battery recharge time 6 h Hot-swap battery Yes Number of batteries included 8 pc(s) Battery capacity 9 Ah Battery voltage 12 V Battery technology Sealed Lead Acid (VRLA) P