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656521 — LEAD,STORAGE BATTERY

✓ Government record, cited
— · WIRE CABLE
PRODUCT OVERVIEW

656521: LEAD,STORAGE BATTERY.

The LEAD,STORAGE BATTERY 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 material: ALUMINUM ALLOY 6061 OVERALL, shaft_length: 3.625 INCHES NOMINAL IN, thread_class: 2A A, usage_design: BATTERY, conductor_form: STRANDED SINGLE CONDUCTOR, major_diameter: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 6150-00-185-3100, 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
656521
NSN: 6150-00-185-3100
NIINs: 001853100, 010533884
FSC: 6150 — Miscellaneous Electric Power and Distribution Equipment
CAGE: 89926 — NEW HOLLAND CONSTRUCTION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
shaft_length3.625 INCHES NOMINAL IN
thread_class2A A
usage_designBATTERY
conductor_formSTRANDED SINGLE CONDUCTOR
major_diameter0.375 INCHES NOMINAL IN
overall_length5.750 INCHES NOMINAL IN
handle_clearance4.000 INCHES NOMINAL IN
termination_typeTERMINAL STORAGE BATTERY BOTH ENDS FIRST CONDUCTOR
terminal_polarityNEGATIVE BOTH ENDS SINGLE CONDUCTOR
terminal_lug_styleRIGHT ANGLE BOLT CLAMP SECOND END SINGLE CONDUCTOR
nominal_thread_size0.375 INCHES IN
NSN6150-00-185-3100
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 656521 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
ROUND CONDUCTOR SIZE: 00 AWG SINGLE CONDUCTOR
•
TERMINATION TYPE: TERMINAL STORAGE BATTERY BOTH ENDS FIRST CONDUCTOR
•
USAGE DESIGN: BATTERY
•
TERMINAL POLARITY: NEGATIVE BOTH ENDS SINGLE CONDUCTOR
•
STRAND AWG SIZE PER CONDUCTOR: 30 SINGLE CONDUCTOR
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
TERMINAL LUG STYLE: RIGHT ANGLE BOLT CLAMP SECOND END SINGLE CONDUCTOR
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
ROUND CONDUCTOR SIZE00 AWG SINGLE CONDUCTOR
TERMINATION TYPETERMINAL STORAGE BATTERY BOTH ENDS FIRST CONDUCTOR
USAGE DESIGNBATTERY
TERMINAL POLARITYNEGATIVE BOTH ENDS SINGLE CONDUCTOR
STRAND AWG SIZE PER CONDUCTOR30 SINGLE CONDUCTOR
CROSS-SECTIONAL SHAPE STYLEROUND
TERMINAL LUG STYLERIGHT ANGLE BOLT CLAMP SECOND END SINGLE CONDUCTOR
TERMINAL LUG STYLERIGHT ANGLE BOLT CLAMP FIRST END SINGLE CONDUCTOR
CONDUCTOR FORMSTRANDED SINGLE CONDUCTOR
STRAND QUANTITY PER CONDUCTOR1330 SINGLE CONDUCTOR
SUBSTITUTES & CROSS-REFERENCES 1
0656521-2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 656521?
656521 is a LEAD,STORAGE BATTERY.
What parts can replace 656521?
There is 1 known substitute for 656521: 0656521-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 656521?
656521 is cataloged in the U.S. Government catalog under NSN 6150-00-185-3100. 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.