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Technical Data Sheet
PartsTable / COMPONENT / RM640
RM640 ✓ 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: RUBBER, usage_design: HEARING AIDS AND RADIO, overall_length: 0.440 INCHES NOMINAL IN, overall_diameter: 0.625 INCHES NOMINAL IN, special_features: THE TERMINAL TYPE IS A FLAT CONTACT - RM640 DURACELL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6135-00-347-0595, 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
RM640
NSN: 6135-00-347-0595
FSC: 6135
CAGE: 90303 — DURACELL INC (USA)
SPECIFICATIONS
shapeCYLINDRICAL
materialRUBBER
usage_designHEARING AIDS AND RADIO
overall_length0.440 INCHES NOMINAL IN
overall_diameter0.625 INCHES NOMINAL IN
special_featuresTHE TERMINAL TYPE IS A FLAT CONTACT - RM640 DURACELL
voltage_in_volts1.4
terminal_quantity2
NSN6135-00-347-0595
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BATTERY,NONRECHARGEABLE TITLE COMPONENT PN RM640 MFR BATTERY,NONRECHARGEABL
KEY FEATURES
•
SHAPE: CYLINDRICAL
•
USAGE DESIGN: HEARING AIDS AND RADIO
•
OVERALL DIAMETER: 0.625 INCHES NOMINAL IN
•
VOLTAGE IN VOLTS: 1.4
•
TERMINAL QUANTITY: 2
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
OVERALL LENGTH0.440 INCHES NOMINAL IN
USAGE DESIGNHEARING AIDS AND RADIO
SPECIAL FEATURESTHE TERMINAL TYPE IS A FLAT CONTACT - RM640 DURACELL
OVERALL DIAMETER0.625 INCHES NOMINAL IN
VOLTAGE IN VOLTS1.4
TERMINAL QUANTITY2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
247348PC6Interchangeable
interchangeable cross-reference
interchangeable
E640Interchangeable
interchangeable cross-reference
interchangeable
QQ-S-571Interchangeable
interchangeable cross-reference
interchangeable
M30Interchangeable
interchangeable cross-reference
interchangeable
QQS571SN50Interchangeable
interchangeable cross-reference
interchangeable
MF234Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RM640?
RM640 is a BATTERY,NONRECHARGEABLE.
What parts can replace RM640?
There are 22 known substitutes for RM640: 247348PC6, E640, QQ-S-571 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RM640?
RM640 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6135-00-347-0595. 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