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6TW9W — Dell 41WH Li-Ion Battery Type G91j0 11.25V

✓ Government record, cited
DELL · BATTERY · LITHIUM
PRODUCT OVERVIEW
DELL 41WH LI-ION BATTERY TYPE G91J0 11.25V

6TW9W: Dell 41WH Li-Ion Battery Type G91j0 11.25V.

The Dell 6TW9W is a Battery-Backed Write Cache pack, designed for Dell PERC controllers in PowerEdge 12th and 13th generation 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 PowerEdge 12th and 13th generation servers remain widely deployed.

This part is cataloged in the U.S. Government catalog under NSN 6140-01-708-7645, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
BATTERY→ LITHIUM→ 6TW9W
NSN: 6140-01-708-7645
FSC: 6140 — Batteries, Rechargeable
CAGE: 3DMD3 — DELL MARKETING L.P. (USA)
SPECIFICATIONS
VOLTAGE IN VOLTS11.25
BATTERY ELECTROLYTELITHIUM
PART NAME ASSIGNED BY CONTROLLING AGENCYRECHARGEABLE BATTERY PACK
NSN6140-01-708-7645
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 6TW9W MFR DELL Dell 41WH Li-Ion Battery Type G91j0 11.2
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
VOLTAGE IN VOLTS11.25
BATTERY ELECTROLYTELITHIUM
PART NAME ASSIGNED BY CONTROLLING AGENCYRECHARGEABLE BATTERY PACK
OTHER ITEMS IN FSC 6140 — Batteries, Rechargeable
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6140-00-000-5725 6140-00-001-1544 6140-00-001-4187 6140-00-001-5391 6140-00-001-5392 6140-00-003-0528 6140-00-003-5310 6140-00-003-7222
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
DG Class 9 — LithiumRestricted Air FreightNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6TW9W?
6TW9W is a Dell 41WH Li-Ion Battery Type G91j0 11.25V manufactured by DELL. It is classified as a BATTERY (LITHIUM).
What is the NSN for 6TW9W?
6TW9W is cataloged in the U.S. Government catalog under NSN 6140-01-708-7645. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.