[About Us]

The world leader in advanced aircraft batteries, chargers and mechanical products.

Founded in 1923 and headquartered in Waco, TX, we are the total solution to aircraft power needs from Engine, APU Starting, Emergency Power to Ground Support and Maintenance.  MarathonNorco engineers, manufactures and markets specialty power transmission products as  as well as a wide range of mechanical hold open rods and special coupling devices for Commercial and Military aerospace.

It all starts with design.  Our experienced engineering staff has decades of experience in power and mechanical products.  We employ a Stage-Gate product development process to ensure that we build in quality and performance from the beginning.  Our experience and process-driven culture give us both the flexibility and the discipline to move quickly while engineering reliable, highly technical products that perform!

We are serious about Quality! It starts in engineering, where we design our products for manufacturability to ensure defect free parts.  Our facility is ISO14001/AS9100D certified, we have a Part 145 FAA/EASA Repair Station in house and we operate and staff a modern quality system that helps us deliver for you.

With 215,000 square foot of manufacturing space, we are a vertically integrated operation from raw materials to finished products.  We employ the latest in digital industrial technology to manufacture precision parts to meet our exacting specifications.

[Total Power Solution]

Our Product Lines

Marathon Batteries

Long life advanced aircraft batteries that are strong, reliable, and provide a high-rate of performance at extreme temperatures.


Norco Mechanicals

Custom solutions including ball reversers, hold open rods, remote release systems, latches, tensol locks, receivers and interlocks.


Christie Chargers

Our Christie™ product line covers the spectrum from power supplies, battery chargers/analyzers to highly sophisticated battery management systems.


Explore Our Product Catalog

  • All
  • 17 Ah Aircraft Batteries
  • 28 Ah Aircraft Batteries
  • 33 Ah Aircraft Batteries
  • 40 Ah Aircraft Batteries
  • 44 Ah Aircraft Batteries
  • 53 Ah Aircraft Batteries
  • 54 Ah Aircraft Batteries
  • 75 Ah Aircraft Batteries
  • Aircraft Battery Trickle Chargers
  • Aircraft Ground Power Unit
  • Ball Reversers
  • CASP Series Chargers
  • Christie Products
  • Hold Open Rods
  • Marathon Aircraft Batteries
  • MicroMaintenance Aircraft Batteries
  • Norco Mechanical Products
  • Receivers & Interlocks
  • Remote Release Handle Systems
  • RF80 Series Chargers
  • SuperPower Aircraft Batteries
  • Tensol Locks
100 %

Testing & Inspection

215 K sq ft

Manufacturing Space

100 +

Dedicated Employees


Years of Experience

[Since 1923]

Our Expertise is Your Advantage

Our products have flown on nearly every major airframe in commercial and military aviation.

Trusted Supplier to Customers Worldwide