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PartsTable / COMPONENT / MILB81757A
MILB81757A ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The BATTERY ASSEMBLY is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include overall_width: 7.688 INCHES NOMINAL IN, overall_height: 8.812 INCHES NOMINAL IN, overall_length: 6.910 INCHES NOMINAL IN, battery_quantity: 19. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6140-01-104-9581, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MILB81757A
NSN: 6140-01-104-9581
FSC: 6140
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
overall_width7.688 INCHES NOMINAL IN
overall_height8.812 INCHES NOMINAL IN
overall_length6.910 INCHES NOMINAL IN
battery_quantity19
NSN6140-01-104-9581
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BATTERY ASSEMBLY TITLE COMPONENT PN MILB81757A MFR BATTERY ASSEMBLY
KEY FEATURES
•
BATTERY QUANTITY: 18
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
BATTERY QUANTITY18
OVERALL WIDTH6.482 INCHES NOMINAL IN
OVERALL LENGTH6.910 INCHES NOMINAL IN
OVERALL HEIGHT6.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
19470Upgraded Successor
successor cross-reference
successor
6140PL1014133Upgraded Successor
successor cross-reference
successor
RG5-1Upgraded Successor
successor cross-reference
successor
VNC22Upgraded Successor
successor cross-reference
successor
MS90321-78Upgraded Successor
successor cross-reference
successor
MIL-B-81757Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILB81757A?
MILB81757A is a BATTERY ASSEMBLY.
What parts can replace MILB81757A?
There are 29 known substitutes for MILB81757A: 19470, 6140PL1014133, RG5-1 and 26 more. Substitute compatibility should be verified for your specific system.
Is MILB81757A still available?
MILB81757A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026