PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-8565Battery,storage

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6140-00-866-6815 · FSC 6140 · No Item Name Available
Verified by PartsTable
NSN 6140-00-866-6815 — this item is cataloged by the U.S. Government under National Stock Number 6140-00-866-6815. Primary manufacturer part number: MIL-B-8565.
Features
  • Battery,storage — FSC 6140
  • Voltage in Volts: 24.0
  • Case Design Type: SEALED
  • Battery Electrolyte: POTASSIUM HYDROXIDE
  • Cell Quantity: 21
  • 5 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Electrical power distribution
  • Generator and power systems
  • Industrial motor installations
General Description

The Battery,storage, cataloged under National Stock Number 6140-00-866-6815, is classified within Federal Supply Class 6140 (No Item Name Available) of the Electric Wire, Power, and Distribution Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6140-00-866-6815
Primary Part NumberMIL-B-8565
Item NameBattery,storage
FSC / FSG6140 / 61 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Voltage in Volts24.0
Case Design TypeSEALED
Battery ElectrolytePOTASSIUM HYDROXIDE
Cell Quantity21
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Battery,storage
Cross-Reference Index
Part NumberManufacturer
MIL-B-8565 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
27177-001 Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company (USA)
MS17334-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-8565 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
27177 Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company (USA)
Related Parts
6140-00-965-7757SUCCESSOR
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6140-01-266-1633SUCCESSOR
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6140-01-266-1634SUCCESSOR
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6140-01-267-9594SUCCESSOR
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6140-01-286-6294SUCCESSOR
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6140-01-385-4191SUCCESSOR
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6140-01-392-0504SUCCESSOR
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6140-01-399-6835SUCCESSOR
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6140-01-420-8988SUCCESSOR
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6140-01-498-2223SUCCESSOR
BATTERY,STORAGE
6140-01-555-6118SUCCESSOR
BATTERY,STORAGE
6140-01-082-2972INTERCHANGEABLE
BATTERY,STORAGE

Frequently Asked Questions

What is NSN 6140-00-866-6815?

NSN 6140-00-866-6815 is a Battery,storage, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6140 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6140-00-866-6815?

NSN 6140-00-866-6815 has 5 cross-referenced part numbers: MIL-B-8565 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 27177-001 (Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company), MS17334-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-8565 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 27177 (Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company).

What NSN replaces 6140-00-866-6815?

There are 12 known substitutes for 6140-00-866-6815: 6140-00-965-7757, 6140-01-266-1633, 6140-01-266-1634 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-8565?

Key specifications for MIL-B-8565: Voltage in Volts: 24.0; Case Design Type: SEALED; Overall Width: 294.1 MILLIMETERS NOMINAL MM; Overall Height: 230.0 MILLIMETERS NOMINAL MM. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6140-00-866-6815 still in active supply?

NSN 6140-00-866-6815 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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