MicroLite Replacement Batteries for Invisible Fence - 4-Pack (RFA182, A12, R21, R22, R51)

Four MicroLite replacement batteries designed for Invisible Fence brand systems. This 4-pack fits devices requiring any of the following battery models: RFA182, A12, R21, R22, and R51. Keep your pet containment receivers powered with these compatible spare batteries—an easy swap to restore functionality when original cells wear out.