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A78-1 ✓ 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 LEAD,STORAGE BATTERY 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 width: 8.750 INCHES NOMINAL IN, length: 9.125 INCHES NOMINAL IN, material: COPPER CORE CONDUCTOR SINGLE CONDUCTOR, thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN, inside_angle: 15.0 DEGREES NOMINAL, hole_diameter: 0.344 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-111-4229, 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
A78-1
NSN: 5365-00-111-4229
FSC: 5365
CAGE: 97484 — EATON AEROSPACE LLC DIV FLUID AND ELECTRICAL DISTRIBUTION DIVISION (USA)
SPECIFICATIONS
width8.750 INCHES NOMINAL IN
length9.125 INCHES NOMINAL IN
materialCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
inside_angle15.0 DEGREES NOMINAL
hole_diameter0.344 INCHES NOMINAL IN
conductor_formSTRANDED SINGLE CONDUCTOR
inside_diameter7.062 INCHES NOMINAL IN
overall_diameter0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
round_conductor_size0 AWG SINGLE CONDUCTOR
securing_device_typeTHREADED FASTENER
NSN5365-00-111-4229
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LEAD,STORAGE BATTERY TITLE COMPONENT PN A78-1 MFR LEAD,STORAGE BATTERY
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
78-1Interchangeable
interchangeable cross-reference
interchangeable
A78-1Interchangeable
interchangeable cross-reference
interchangeable
FF-W-92BInterchangeable
interchangeable cross-reference
interchangeable
17434Interchangeable
interchangeable cross-reference
interchangeable
GP4016Interchangeable
interchangeable cross-reference
interchangeable
A10231Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A78-1?
A78-1 is a LEAD,STORAGE BATTERY.
What parts can replace A78-1?
There are 6 known substitutes for A78-1: 78-1, A78-1, FF-W-92B and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A78-1?
A78-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-111-4229. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026