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Technical Data Sheet
878641-001 ✓ Verified by PartsTable
· BATTERY CAPACITOR
WHAT YOU NEED TO KNOW
Very common replacement part Capacitors degrade slower than batteries but still lose capacity over time
CABLE LENGTH IS CRITICAL: 660093-001 = 36" (2U+), 654873-003 = 24" (1U)
PRODUCT OVERVIEW

The the manufacturer 878641-001 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 (FLIS) under NSN 6140-01-686-0212, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
878641-001
NSN: 6140-01-686-0212
FSC: 6140
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
special_featuresACTION ID 45383321
part_name_assigned_by_controlling_agencySMART ARRAY CONTROLLER BATTERIES
NSN6140-01-686-0212
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 878641-001 MFR OEM HPE 12W SMART STORAGE BATTERY
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
  • 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)
PART NAME ASSIGNED BY CONTROLLING AGENCYSMART ARRAY CONTROLLER BATTERIES
SPECIAL FEATURESACTION ID 45383321
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
881089-210Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99DG Class 9 — LithiumRestricted Air Freight
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FREQUENTLY ASKED QUESTIONS
What is 878641-001?
878641-001 is a HPE 12W SMART STORAGE BATTERY.
What parts can replace 878641-001?
There is 1 known substitute for 878641-001: 881089-210. Substitute compatibility should be verified for your specific system.
What is the NSN for 878641-001?
878641-001 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6140-01-686-0212. This indicates validated use in U.S. government and defense supply chains.
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