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E640 ✓ 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, material: STEEL COMP 316 OVERALL, usage_design: HEARING AIDS AND RADIO, overall_length: 0.440 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: BARBED OR BEADED (HOSE) SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4330-00-026-7856, 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
E640
NSN: 4330-00-026-7856
FSC: 4330
CAGE: 81193 — HEALTH MOR INC (USA)
SPECIFICATIONS
shapeCYLINDRICAL
materialSTEEL COMP 316 OVERALL
usage_designHEARING AIDS AND RADIO
overall_length0.440 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleBARBED OR BEADED (HOSE) SECOND END
overall_diameter0.625 INCHES NOMINAL IN
special_featuresTHE TERMINAL TYPE IS A FLAT CONTACT - RM640 DURACELL
voltage_in_volts1.4
terminal_quantity2
nominal_thread_size1.000 INCHES FIRST END IN
nominal_overall_length1.784 INCHES IN
NSN4330-00-026-7856
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BATTERY,NONRECHARGEABLE TITLE COMPONENT PN E640 MFR BATTERY,NONRECHARGEABL
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: W/PROVISION FOR MOUNTING
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)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONW/PROVISION FOR MOUNTING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
E640Interchangeable
interchangeable cross-reference
interchangeable
HG 640Interchangeable
interchangeable cross-reference
interchangeable
M30Interchangeable
interchangeable cross-reference
interchangeable
GT519404Interchangeable
interchangeable cross-reference
interchangeable
247348PC6Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E640?
E640 is a BATTERY,NONRECHARGEABLE.
What parts can replace E640?
There are 5 known substitutes for E640: E640, HG 640, M30 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E640?
E640 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4330-00-026-7856. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026