PartsTable
Intelligence Platform
Buy on eBay
PartsTable / CONTROLLER / 729639-001
729639-001 ✓ Verified by PartsTable
HP · CONTROLLER · RAID_BBU
WHAT YOU NEED TO KNOW
RAID battery backup units should be purchased new only. Always ship with test reports confirming status. Key checks: Ship with test reports.
Firmware must match server
PRODUCT OVERVIEW

The HP 729639-001 is a Flash-Backed Write Cache capacitor pack, designed for HPE Smart Array controllers in ProLiant Gen8 and Gen9 servers. It provides backup power to the FBWC 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
CONTROLLER→ RAID_BBU→ 729639-001
SPECIFICATIONS
Part Number729639-001
ManufacturerHP
Capacity4GB
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 729639-001 MFR HP HP 4GB Flash Backed Write Cache
KEY FEATURES
•
Flash-Backed Write Cache Capacitor
•
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
•
Hot-Plug Capable
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
698555-001Compatible
HP Smart Array FBWC 4Gb Module for P430/P431/P830
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 1
698555-001SUBSTITUTE
HP Smart Array FBWC 4Gb Module for P430/P431/P830
HPE
Ready to buy 729639-001?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 729639-001?
729639-001 is a HP 4GB Flash Backed Write Cache manufactured by HP. It is classified as a CONTROLLER (RAID_BBU).
What parts can replace 729639-001?
There is 1 known substitute for 729639-001: 698555-001. Substitute compatibility should be verified for your specific system.
Is 729639-001 still available?
729639-001 is currently Unknown.
Community Feedback
Comments (0)
Loading comments...
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Need a quote for 729639-001?

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026