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MK Battery 12v 45 AH Deep Cycle Sealed AGM Battery ES40-12

Was: $170.00
Sale Price: $164.95
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Product InformationStore Part Number: ES40-12


The MK Battery ES40-12 is a 12v 45 AH Deep Cycle Sealed AGM Battery ships with F4 Style Terminals (bolt through post) and comes with a handle for easy pickup.

MK 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 does not include fees for highly rural location, hard to reach locations, islands or location requiring ferry's. These locations may be subject to additional shipping fees. You will be advised prior to your order being processed if additional fees are required, at which point you may proceed with the order if accepted.

Tech Specs

  • Dimensions (LxWxH): 7.80 x 6.54 x 6.73 in
  • Weight: 31.9 lb
  • Shipping Weight: 34 lb
  • DC Output Voltage: 12 V
  • Amp/Hr: 45 AH
  • 20 Hour Rate (2.25A to 10.50V): 45 AH
  • 10 Hour Rate (4.275A to 10.50V): 42.75 AH
  • 5 Hour Rate (7.65A to 10.20V): 38.25 AH
  • 1C (45A to 9.60V): 25.5 AH
  • Model: ES40-12
  • Manufacturer: MK/East Penn/Deka
  • 3C (135A to 9.60V): 18 AH
  • Internal Resistance (at 1KHz): Approx. 7 mΩ
  • Maximum Discharge Current for 5 Seconds: 540 A
  • Operating Temperature Range: Charge/Storage: -15°C (5°F) to 40°C (104°F) ; Discharge: -15°C (5°F) to 50°C (122°F)
  • Charge Retention (shelf life) at 20°C (68°F): 1-Month: 92% ; 3-Months: 90% ; 6-Months: 80%
  • Maximum Charging Current: 13.5A
  • Cycle Charging Voltage: 14.4 - 15.0 volts
  • Float Charging Voltage: 13.5 - 13.8 volts
  • Manufacturer Part #: ES40-12
  • Made In: Asia

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