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LSI4957115 — LSI SuperCap RAID Controller Battery Backup Unit

LSI · CONTROLLER · RAID_BBU
PRODUCT OVERVIEW

LSI4957115: LSI SuperCap RAID Controller Battery Backup Unit.

The LSI LSI4957115 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. Unlike traditional batteries, the supercapacitor design offers a longer operational lifespan with no scheduled replacement cycles and no temperature-related degradation.

This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.

WHERE IT FITS
CONTROLLER→ RAID_BBU→ LSI4957115
SPECIFICATIONS
Part NumberLSI4957115
ManufacturerLSI
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 LSI4957115 MFR LSI LSI SuperCap RAID Controller Battery Bac
KEY FEATURES
•
Battery-Backed Write Cache Module
•
Supercapacitor Technology
Longer lifespan than traditional batteries — no scheduled replacement cycles
•
Hot-Plug Capable
•
No Maintenance Required
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 1
UCSCMRAIDSCSubstituteBROKER-VERIFIED
Cisco SuperCap RAID Controller Battery Backup Unit
substitute
LIFECYCLE

No lifecycle data available.

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FREQUENTLY ASKED QUESTIONS
What is LSI4957115?
LSI4957115 is a LSI SuperCap RAID Controller Battery Backup Unit manufactured by LSI. It is classified as a CONTROLLER (RAID_BBU).
What parts can replace LSI4957115?
There is 1 known substitute for LSI4957115: UCSCMRAIDSC. 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.