FAA-PMA Approved certified

FAA-PMA Approved

FAA Part 145 Approved certified

FAA Part 145 Approved

GNB Marathon Industrial Batteries

GNB Marathon Industrial Batteries represent a comprehensive range of FAA-PMA approved aviation battery components, including replacement battery packs, modification kits, low-impedance receptacles, and temperature sensors. Engineered for corporate, airline, and military aircraft applications, these batteries deliver reliable power and safety. Backed by over 47 years of aviation battery expertise and 24/7 technical support.

MARATHON – LOW-IMPEDANCE RECEPTACLE (STUD TYPE)
FAA-PMA Replacement Battery Packs
FAA-PMA Modification Kits
Battery Temperature Sensors

Our Range of Products

MARATHON – LOW-IMPEDANCE RECEPTACLE (STUD TYPE)

MARATHON – LOW-IMPEDANCE RECEPTACLE (STUD TYPE)

  • Stud-type mounting
  • 47+ years industry experience
  • Rental program available
FAA-PMA Replacement Battery Packs

FAA-PMA Replacement Battery Packs

  • FAA-PMA approved packs
  • 47,000+ units serviced
  • Rental batteries available
FAA-PMA Modification Kits

FAA-PMA Modification Kits

  • FAA-PMA approved kits
  • 100+ years experience
  • Part 145 approved facility
Battery Temperature Sensors

Battery Temperature Sensors

  • Multiple aircraft compatible
  • 100+ years experience
  • 24/7 AOG support

Frequently Asked Questions

Who makes GNB batteries?

GNB Marathon batteries are manufactured by Marathon, with FAA-PMA approved second-source components available from Ni-Cad Systems, Inc., a Part 145 FAA-approved facility with over 47 years of aviation battery expertise.

What is FAA-PMA approval and why does it matter?

What types of Marathon battery components are available?

Do you provide 24/7 technical support for AOG situations?

What aircraft types are Marathon batteries compatible with?

Can you service any nickel-cadmium battery?

Are rental batteries available during service?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Corporate Aviation

Corporate Aviation

Marathon batteries power business jets with FAA-PMA approved reliability, backed by fast turnaround service and rental options.

Airline Operations

Airline Operations

Commercial airlines trust Marathon battery systems for main and auxiliary power with 24/7 AOG technical support for operational continuity.

Military Aircraft

Military Aircraft

Marathon batteries deliver mission-critical power for defense aircraft with modification kits and second-source components for fleet standardization.

Aviation Maintenance

Aviation Maintenance

MRO facilities rely on Marathon components for battery system repairs, modifications, and overhauls with Part 145 approved quality standards.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why Aviation Operators Choose Ni-Cad Systems, Inc.

FAA-PMA Approved Excellence

Over 30 FAA-PMA approvals for second-source battery components, modification kits, and sensors ensure regulatory compliance and aircraft safety standards.

47+ Years Aviation Battery Expertise

Over 47,000 units serviced since 1974 with a highly skilled team holding 100+ years combined engineering experience. FAA DER and Part 145 approved facility.

24/7 AOG Technical Support

Fast turnaround times with rental batteries available for immediate needs. Round-the-clock technical support ensures your aircraft stay operational during critical situations.

Get Expert Guidance on Marathon Battery Components for Your Fleet

Our aviation battery specialists respond within 24 hours with technical specifications, compatibility details, and fast-turnaround quotes. 24/7 AOG support available.

Contact Us Today

For immediate assistance, feel free to give us a direct call at +1 510 785 9391. You can also send us a quick email at Sandrues@aol.com.