RG-442 is a sealed, valve regulated lead acid starting aircraft battery with TS-C4 Temperature Sensor approved (Concorde part number 5-0124) to Parts Manufacturing Approved to replace the original nickel cadmium battery. The RG-442 is form, fit, and functionally interchangeable with the existing battery without onboard modification.
As a direct lead acid replacement for the nickel cadmium battery, the Concorde RG-442 valve regulated battery greatly improves battery performance over nickel cadmium types in cold weather climates.
At a fraction of the initial investment for nickel cadmium types, the Concorde RG-442 battery will save maintenance costs. The first maintenance (capacity) check is performed at 12 months or 600 hours, and subsequent checks at 4 months or 200 hours, until the battery reaches the minimum capacity of 85%. Once the battery’s airworthiness performance service time is established, the Concorde replacement battery can be operated for that total time free of maintenance checks.