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D387BK ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The BATTERY,NONRECHARGEABLE is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include shape: CYLINDRICAL, terminal_type: FLAT CONTACT CAP, overall_height: 0.137 INCHES NOMINAL IN, overall_diameter: 0.455 INCHES NOMINAL IN, voltage_in_volts: 1.35, battery_electrolyte: ALKALINE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6135-00-403-0213, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
D387BK
NSN: 6135-00-403-0213
FSC: 6135
CAGE: 90303 — DURACELL INC (USA)
SPECIFICATIONS
shapeCYLINDRICAL
terminal_typeFLAT CONTACT CAP
overall_height0.137 INCHES NOMINAL IN
overall_diameter0.455 INCHES NOMINAL IN
voltage_in_volts1.35
battery_electrolyteALKALINE
NSN6135-00-403-0213
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BATTERY,NONRECHARGEABLE TITLE COMPONENT PN D387BK MFR BATTERY,NONRECHARGEABL
KEY FEATURES
•
SHAPE: CYLINDRICAL
•
VOLTAGE IN VOLTS: 1.35
•
TERMINAL TYPE: FLAT CONTACT CAP
•
BATTERY ELECTROLYTE: ALKALINE
•
OVERALL DIAMETER: 0.455 INCHES NOMINAL IN
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 (FLIS)
SHAPECYLINDRICAL
VOLTAGE IN VOLTS1.35
TERMINAL TYPEFLAT CONTACT CAP
OVERALL HEIGHT0.137 INCHES NOMINAL IN
BATTERY ELECTROLYTEALKALINE
OVERALL DIAMETER0.455 INCHES NOMINAL IN
TERMINAL TYPEFLAT CONTACT BASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
536645Interchangeable
interchangeable cross-reference
interchangeable
108420Interchangeable
interchangeable cross-reference
interchangeable
VT3435Interchangeable
interchangeable cross-reference
interchangeable
SA387R-AS15Interchangeable
interchangeable cross-reference
interchangeable
712RAS15Interchangeable
interchangeable cross-reference
interchangeable
EFL309Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D387BK?
D387BK is a BATTERY,NONRECHARGEABLE.
What parts can replace D387BK?
There are 22 known substitutes for D387BK: 536645, 108420, VT3435 and 19 more. Substitute compatibility should be verified for your specific system.
Is D387BK still available?
D387BK is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026