Replacement batteries for PetSafe bark collars, in-ground and wireless electronic fence collars. Replaces Petsafe model RFA-67. Please note, these are not the cheap Chinese knock-off batteries sold on Amazon and elsewhere. These modules contain the highest quality genuine PANASONIC lithium cell inside. They are manufactured by High Tech Pet, the most trusted name in high quality electronic pet products. These batteries are guaranteed to meet or exceed all applicable Petsafe OEM specifications.