RX1-11-11650

The Concorde RG-121-2 is a sealed recombinant-gas emergency and standby aircraft battery from Concorde’s Platinum Series. It uses valve-regulated lead-acid (VRLA) absorbed glass mat (AGM) technology and is designed for emergency or standby electrical-power duties; it is not rated for engine starting.

Part number RG-121-2 incorporates an internal DC heater for improved cold-weather performance. Concorde states that the heater blankets are interwoven between the cells and operate at low battery temperatures.

• Manufacturer: Concorde Battery Corporation
• Manufacturer part number: RG-121-2
• Nominal voltage: 24 V
• Rated capacity: 2 Ah at the C1 (1-hour) rate
• Battery type: Sealed VRLA, AGM, recombinant-gas
• Function: Emergency / standby aircraft battery
• Cold-weather feature: Internal DC heater
• Maximum mass: 2.9 kg
• Approximate dimensions: 178 × 111 × 84 mm
• Manufacturer approval statement: FAA TSO-C173 authorised

Maintenance-free construction eliminates the need to add electrolyte or water. Confirm the required battery part number, connector configuration and approved installation data for the specific aircraft before installation.

Manufacturer documentation:

• RG-121-1 / RG-121-2 product brochure
• RG-121 / RG-122 technical documentation