PetSafe RFA-188 Battery*DESCRIPTION:- PetSafe RFA-188 Battery - Single- The average battery life of an RFA-188 battery is 3-4 months depending on use.- The PetSafe RFA-188 battery is compatible with the following PetSafe bark collars and receiver collars:>> Bark Collars:- PetSafe Deluxe Little Dog A..