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462987-B21 — HP 650 mAh P-Series Battery Module

HPE · BATTERY · LITHIUM
PRODUCT OVERVIEW

462987-B21: HP 650 mAh P-Series Battery Module.

The HP 462987-B21 is a Battery-Backed Write Cache pack, designed for HPE Smart Array controllers in ProLiant Gen8 and Gen9 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 ProLiant Gen8 and Gen9 servers remain widely deployed.

WHERE IT FITS
BATTERY→ LITHIUM→ 462987-B21
SPECIFICATIONS
Part Number462987-B21
ManufacturerHPE
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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 462987-B21 MFR HPE HP 650 mAh P-Series Battery Module
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
SUBSTITUTES & CROSS-REFERENCES 3
462976-001CompatiblePARTNER
HP Smart Array Battery 650 mAh Ni-MH for P212 P410 P411
compatible
462969-B21CompatiblePARTNER
HP Smart Array Battery 650 mAh Ni-MH for P212 P410 P411
compatible
460499-001CompatiblePARTNER
HP Smart Array Battery 650 mAh Ni-MH for P212 P410 P411
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
460499-001SUBSTITUTE
HP Smart Array Battery 650 mAh Ni-MH for P212 P410 P411
HPE
462969-B21SUBSTITUTE
HP Smart Array Battery 650 mAh Ni-MH for P212 P410 P411
HPE
462976-001SUBSTITUTE
HP Smart Array Battery 650 mAh Ni-MH for P212 P410 P411
HPE
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FREQUENTLY ASKED QUESTIONS
What is 462987-B21?
462987-B21 is a HP 650 mAh P-Series Battery Module manufactured by HPE. It is classified as a BATTERY (LITHIUM).
What parts can replace 462987-B21?
There are 3 known substitutes for 462987-B21: 462976-001, 462969-B21, 460499-001. Substitute compatibility should be verified for your specific system.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.