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Technical Data Sheet

54918 — Battery Module Specs

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Hama · CONTROLLER · RAID_CACHE
WHAT YOU NEED TO KNOW
RAID cache modules — check if the battery is included and verify cache size. Ship unlocked and with test reports. Firmware must match the server.
Firmware must match server
PRODUCT OVERVIEW

The Hama 54918 is a Battery-Backed Write Cache pack, designed for enterprise RAID controllers in enterprise servers. It provides backup power to the BBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.

This part is cataloged in the Federal Logistics Information System under NSN 5999-00-814-7947, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
CONTROLLER→ RAID_CACHE→ 54918
NSN: 5999-00-814-7947
FSC: 5999
CAGE: 82423 — KLEINSCHMIDT INC (USA)
SPECIFICATIONS
special_featuresSTEEL; PHOSPHATE FIN; O/A 0.891 IN. LG 0.188 IN. EA W H; CYL SHAPE; MTS BY 8-32 PORTION 0.281 IN. LG IN
NSN5999-00-814-7947
COMPONENT DIAGRAM
CAP 72V + - CAP 72V BRACKET TO CTRL CABLE: — ~76 mm CACHE BACKUP | Supercapacitor | Cable: — Connects to RAID controller | | Controller: See controller spec SCHEMATIC: + - 2S2P SUPERCAP PACK TITLE CACHE BATT PN 54918 MFR Hama IBM PCI-X DDR 1.5 GB cache SAS RAID Adap
KEY FEATURES
•
Battery-Backed Write Cache Module
•
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
•
Hot-Plug Capable
TYPICAL APPLICATIONS
  • Hardware RAID acceleration for enterprise storage
  • Data protection and parity management
  • Cache-backed write acceleration
  • Storage tiering and SSD caching
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSTEEL; PHOSPHATE FIN; O/A 0.891 IN. LG 0.188 IN. EA W H; CYL SHAPE; MTS BY 8-32 PORTION 0.281 IN. LG IN
SPECIAL FEATURESSTEEL; PHOSPHATE FIN; O/A 0.891 IN. LG 0.188 IN. EA W H; CYL SHAPE; MTS BY 8-32 PORTION 0.281 IN. LG IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
X12109Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
C0344Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
50-1934SXEUpgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
12109InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
VCG-320InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
23407-501InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMATSourcing: other
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FREQUENTLY ASKED QUESTIONS
What is 54918?
54918 is a IBM PCI-X DDR 1.5 GB cache SAS RAID Adapter manufactured by Hama. It is classified as a CONTROLLER (RAID_CACHE).
What parts can replace 54918?
There are 21 known substitutes for 54918: X12109, C0344, 50-1934SXE and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54918?
54918 is cataloged in the Federal Logistics Information System under NSN 5999-00-814-7947. This indicates validated use in U.S. government and defense supply chains.
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