Lenovo 55949BX 8 kVA/11 kVA Extended Battery Module | Rack/Tower UPS

Keep RT8kVA and RT11kVA UPS systems online longer with the Lenovo 55949BX extended battery module. Designed for environments where runtime matters as much as power conditioning, this external battery pack adds the reserve capacity needed to ride through utility interruptions, generator transfer delays, and orderly shutdown sequences. Its 3U rack or tower form factor gives infrastructure teams deployment flexibility without forcing a redesign of the power stack. That matters in dense server rooms and mixed-format sites where space, service access, and standardization all affect total cost of ownership. By matching Lenovo UPS platforms in the RT8kVA and RT11kVA class, the module supports a cleaner, more predictable power architecture. For teams protecting transactional systems, storage, network gear, or virtualization hosts, extended battery runtime is not a luxury. It is the difference between a brief disturbance and an operational event. This module is built to support that margin with the same discipline expected in enterprise power infrastructure.