GNB Marathon M12V40

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Quality manufacturing processes for the GNB Marathon M12V40 batteries incorporate the industry’s most advanced technologies including: an automated helium leak detection system, a computer controlled “fill by weight” acid filler, and a temperature controlled water bath formation process. Each and every unit is capacity tested.

GNB Marathon M Bloc Batteries have been discontinued. Please call us at 877-993-8855 or email us at for consultation and pricing on alternative options that have replaced the GNB Marathon M Bloc Batteries.

GNB Marathon M12V40 General Specifications:

Voltage: 12 V

8 hr To 1.75 VPC @ 25ºC: 40 Ah

10 hr To 1.80 VPC @ 20ºC: 37 Ah

Length: 198 mm, 7.81 in

Width: 167 mm, 6.58 in

Height: 178 mm, 7.01 in

Nominal Weight: 17.8 kg, 39 lbs

Short Circuit Current: 2,341 A

Internal Resistance: 5.3 mΩ

Additional Details


  • CATV & Broadband
  • Emergency Lighting
  • Renewable Energy
  • Utilities & Switchgear


  • AGM (VRLA)


Downloads & Documentation

See below for documentation relating to this product line that is available to download. To download this documentation, please click on the desired document you’d like to download and fill out the required form information fields. You will be able to view and download the documents upon completion of the download form.

  • GNB Marathon M Brochure
  • GNB Marathon M IO Manual
  • GNB Marathon M Top Terminal Specs
  • GNB Marathon M Front Terminal Specs