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MK Battery 12v 40 AH Sealed Deep Cycle AGM Battery ES40-12

$170.00 - No Tax
Flat Rate Ground Shipping to Lower 48 States

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This Battery Ships for $12.00

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Product InformationStore Part Number: ES40-12


Our batteries are manufactured under the most versatile computer control battery formation system and technology to achieve the highest quality. The automated, computer controlled system provides programmed functions for steps of current, time, voltage, temperature and event control to match the performance specifications of your application requirements.

NON-SPILLABLE by DOT (Department of Transportation), ICAO (International Commercial Airline Organization) and IATA (International Airline Transportation Association) definitions.


  • Maintenance Free
  • Valve Regulated
  • Used in Multiple Applications
  • Float and Cycle Use
  • High Discharge Rate
  • Absorbed Glass Mat (often referenced as Gel Cell)
  • Leak Proof/Spill Proof
  • Tank formed plates
  • Temperature control formation
  • Constant current formation
  • High quality battery/better uniformity
  • Constant voltage formation


Shipping valid within the 48 contiguous states. Batteries ship from various warehouses and usually deliver within 7 working days.

Tech Specs

  • Dimensions (LxWxH): 7.79 x 6.54 x 6.73 in
  • Terminal Height: 6.73
  • Weight: 31 lb
  • Shipping Weight: 32 lb
  • DC Output Voltage: 12 V
  • Operating Temperature: 5 ° to 122 °F
  • Manufacturer: MK/East Penn/Deka
  • Amp/Hr: 40
  • Max. Discharge Current (A) 5 sec.: 225 A
  • Charging Voltage Standby Use: 13.5–13.8 V
  • Ambient Temp Charge: 32 ° to 104 °F
  • Cycle Service Charging Voltage: 14.4–15.0 V
  • Manufacturer Part #: ES40-12
  • Made In: Asia
  • Terminal Position:

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Manuals & Tutorials

Specifications Sheet

How Batteries Work

Interactive Battery Tutorial

Order Line: 1-800-362-5397
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