Marathon Norco is the leader in Aerospace and Defense Aircraft Batteries.

MarathonNorco offer two choices in technology for aircraft batteries.

Micro Maintenance (M3) Aircraft Batteries
MarathonNorco’s Micro Maintenance (M3) aircraft batteries are improved low-maintenance Nickel-Cadmium batteries that supply reliable power for large commercial aircraft, regional aircraft, military aircraft, corporate aircraft and helicopters. M3 batteries are FAA-PMA approved for many aircraft models offered in sizes from 17 to 75 ampere-hours are interchangeable with existing batteries. Therefore, you can easily make the change to a low-maintenance battery without aircraft modifications and can service the product with your existing battery shop equipment.  The M3 Battery utilizes the latest Polymer Bonded Electrode (PBE) negative electrode technology to ensure optimized performance and dependability. Today’s PBE technology was pioneered by MarathonNorco decades ago. Now, we’ve refined this unique technology to give you greatly reduced maintenance costs. Compared with standard nickel cadmium batteries, this technology provides reduced water consumption, faster recharge, and greater density. This translates into longer flight  hours between servicing,  increased capacity retention, and fast, cooler engine starts.


SuperPower Aircraft Batteries
The rechargeable vented Nickel-Cadmium batteries are widely used for engine starting and emergency power in commercial, corporate and military aircraft – fixed wing and rotary. They also supply power for military weapons, ground vehicles, medical and telecommunications equipment. The SuperPower Aircraft Battery product line has been designed to provide maximum power for engine and APU starting applications.  MarathonNorco Aerospace pioneered the development of sintered plates. The company was the first to use Bunsen vent valves on nickel-cadmium cells, and the first to manufacture hermetically-sealed nickel-cadmium cells.   Sintered plated feature improved woven-wire substrate. They’re stronger, blemish-free, and offer lower resistance. Exclusive high heat resistant polypropylene separator material provides longer life and better high-rate performance at extreme temperatures. Heavy-gauge connectors, large terminals, and heavy-duty screws give superior conductivity.