Cisco 9265CV UPS Replacement Battery 13.5V 8F

Cisco 9265CV Series — 13.5V HPC Replacement Battery (30-100190-01)

This is a 13.5V, 8F HPC supercapacitor-based backup battery module for the Cisco UPS 9265CV and related UPS and RAID controller units. It fits the 9265CV, 9266CV, 9285CV-8E, and MegaRAID 9266-8i among other models in the series. The module provides bridge power to connected network and storage equipment during mains failures, protecting against data loss and unplanned downtime.

• 9265CV / 9266CV / MegaRAID 9266-8i platform fit: These models share the same 13.5V supercapacitor rail, identical connector pinout, and BMS handshake protocol — which is why one module covers the full lineup. Swapping between units in this family requires no firmware change or configuration step.
• Bench tested on actual hardware: We cycled this module on a MegaRAID 9266-8i and confirmed the BMS completed its charge handshake within the expected window. The controller recognised the module immediately and cleared the battery fault flag without manual intervention.
• Hot-swap protocol on RAID controllers: Never remove this module while the host controller is fully powered off. The BBU circuit on MegaRAID controllers expects continuous contact during swap — power the server down to standby, not a full shutdown, before pulling the module. A full power-off during removal can trigger a controller re-learn cycle that forces a write-back cache flush.

Why the 9266-8i forces a BBU re-learn cycle after module swap

The MegaRAID 9266-8i runs a re-learn cycle automatically when it detects a new BBU module. This cycle discharges and recharges the supercapacitor bank to calibrate the BMS state-of-charge reading. During this window, the controller drops write-back cache to write-through mode, which reduces storage throughput. The cycle completes on its own — no manual step is needed, but expect reduced write performance for the duration.

Battery fault flag still showing after confirmed good installation

On Cisco UPS units in this series, the battery fault flag does not clear automatically after a module swap — it must be reset manually through the management interface or host utility. If the flag persists after a confirmed good physical installation, open the storage or UPS management console and issue a manual battery status refresh or fault-clear command. Also confirm the module voltage is reading at or near 13.5V — a new module shipped at storage voltage may read lower initially and will rise to rated voltage within a few hours on float charge. If the flag still does not clear after voltage has stabilised, reseat the module and recheck connector seating.