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Technical Data Sheet
PartsTable / SERVERS / 59Y5260 / 81Y2432
59Y5260 / 81Y2432 ✓ Verified by PartsTable
IBM · 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 IBM 59Y5260 / 81Y2432 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.

WHERE IT FITS
59Y5260 / 81Y2432
SPECIFICATIONS
Part Number59Y5260 / 81Y2432
ManufacturerIBM
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 59Y5260 / 81Y2432 MFR IBM IBM DS5020 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES

No verified substitutes available.

LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 59Y5260 / 81Y2432?
59Y5260 / 81Y2432 is a IBM DS5020 Battery manufactured by IBM.
Is 59Y5260 / 81Y2432 still available?
59Y5260 / 81Y2432 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026