Concorde Battery RG24-11M – 24V Sealed VRLA Aircraft Battery

The Concorde RG24-11M is a 24-volt sealed VRLA aircraft battery designed to provide reliable engine starting power and essential electrical backup for reciprocating-engine aircraft. It supports normal aircraft electrical loads and supplies standby power in the event of generator or alternator failure. This battery is commonly used in certified general aviation and business aviation applications. Its design prioritizes reliability, safety, and consistent performance in demanding aviation environments.

The RG24-11M features an integrated manifold that allows it to directly replace originally installed manifold-vented batteries. The standard RG24-11 does not include this manifold configuration. The “M” designation simplifies installation when replacing legacy vented battery systems without requiring modifications to existing vent lines. Functionally, both batteries share the same core VRLA technology and performance characteristics.

VRLA stands for valve-regulated lead-acid, a sealed battery design that recombines gases internally during normal operation. This technology eliminates the need to add water or electrolyte, reducing maintenance requirements. VRLA batteries also minimize the risk of acid spills and corrosion in aircraft battery compartments. These advantages make VRLA batteries well-suited for aviation safety and reliability requirements.

Yes, the RG24-11M is classified as maintenance-free under normal operating conditions. It does not require electrolyte level checks or water additions. However, regular inspections, capacity testing, and proper charging practices are still required to ensure continued airworthiness.

No, the RG24-11M is not designed or approved for turbine aircraft engine starting applications. It is intended for starting reciprocating engines and for use in essential or standby power applications. Using this battery outside its intended application may impact performance and warranty coverage. Always verify aircraft battery requirements in the applicable maintenance documentation.

The absorbed glass mat (AGM) design immobilizes the electrolyte within fiberglass separators. This enhances vibration resistance, allowing the battery to operate in various orientations. AGM construction also contributes to lower internal resistance, supporting strong starting performance. These characteristics enhance durability in aircraft operating environments.

The RG24-11M should be charged using aviation-approved battery chargers designed for VRLA batteries. Temperature-compensated charging is recommended to maximize battery life. Overcharging or improper charger selection can shorten service life or damage internal components. Always follow Concorde’s published charging specifications.

Capacity testing should be performed at intervals specified in the Aircraft Maintenance Manual (AMM) or according to the battery manufacturer's guidelines. Regular testing helps confirm that the battery can deliver its rated capacity under load. This is especially important before returning an aircraft to service after a prolonged period of downtime. Capacity testing supports both safety and regulatory compliance.

Low internal resistance allows the battery to deliver higher current efficiently during engine starting. This improves cold-start performance and reduces voltage drop under load. It also contributes to stable electrical system performance during normal operation. These benefits help ensure dependable aircraft power delivery.

No, Concorde VRLA batteries, including the RG24-11M, are classified as non-spillable and are exempt from most hazardous material (HAZMAT) shipping regulations. They meet DOT, IATA, and IMDG requirements for non-hazardous transport when properly packaged and labeled. This simplifies logistics and reduces shipping costs. Terminals must still be protected against short circuits during transport.

The battery should be stored in a cool, dry, and well-ventilated area. Terminals should be protected, and the battery should be kept on a regular maintenance charging schedule if stored for an extended period. Proper storage helps prevent capacity loss and sulfation. Always follow manufacturer storage recommendations.

Although sealed, the RG24-11M contains lead and sulfuric acid internally. Proper personal protective equipment, including gloves and eye protection, is recommended during handling. Avoid short-circuiting terminals and never open the battery case. Refer to the Safety Data Sheet (SDS) for detailed guidance on handling.

The battery provides stable power for engine starting and critical electrical systems. In the event of alternator or generator failure, it supplies essential standby power. This capability is critical for avionics, instrumentation, and safety systems. Reliable battery performance directly supports safe aircraft operation.

Yes, Concorde factory tests each RG24-11M battery to verify airworthiness and performance. Batteries are shipped fully charged and ready for installation. Factory testing ensures consistency and quality control. This reduces installation time and supports immediate operational readiness.

Yes, the sealed VRLA design significantly reduces acid venting and electrolyte leakage. This helps protect battery boxes, cables, and the surrounding structure from corrosion. Reduced corrosion translates to lower maintenance costs and longer component life. This is a key advantage over traditional flooded lead-acid batteries.